WSR 15-16-107 PROPOSED RULES BUILDING CODE COUNCIL [Filed August 4, 2015, 11:50 a.m.]
Original Notice.
Preproposal statement of inquiry was filed as WSR 15-10-074.
Title of Rule and Other Identifying Information: Adoption and amendment of the 2015 International Building Code (IBC), chapter 51-50 WAC.
Hearing Location(s): Fire Department Training Center, 1618 South Rebecca Street, Spokane, WA, on September 11, 2015, at 10:00 a.m.; and at the DES Presentation Room, 1500 Jefferson S.E., Olympia, WA 98504, on October 16, 2015, at 10:00 a.m.
Date of Intended Adoption: November 13, 2015.
Submit Written Comments to: Dave Kokot, Chair, State Building Code Council (SBCC), P.O. Box 41449, Olympia, WA 98504-1449, e-mail sbcc@ga.wa.gov, fax (360) 586-9088, by October 23, 2015.
Assistance for Persons with Disabilities: Contact Peggy Bryden by August 24, 2015, (360) 407-9280.
Purpose of the Proposal and Its Anticipated Effects, Including Any Changes in Existing Rules: The proposed rules adopt the 2015 edition of the IBC, published by the IBC, with state amendments to incorporate proposed changes as adopted by the Washington SBCC. The rules will provide increased clarity and life safety measures for construction in Washington state.
Note: Those not listed on the table above remain as adopted in 2012.
Reasons Supporting Proposal: RCW 19.27.031 and 19.27-074 [19.27.074].
Statutory Authority for Adoption: RCW 19.27.031 and 19.27.074.
Rule is not necessitated by federal law, federal or state court decision.
Agency Comments or Recommendations, if any, as to Statutory Language, Implementation, Enforcement, and Fiscal Matters: SBCC is seeking comments on the issues proposed in the rules shown below.
Name of Proponent: SBCC, governmental.
Name of Agency Personnel Responsible for Drafting and Implementation: Joanne T. McCaughan, 1500 Jefferson Street, Olympia, (360) 407-9279.
A small business economic impact statement has been prepared under chapter 19.85 RCW.
Small Business Economic Impact Statement
Description: SBCC is filing a proposed rule to adopt the updated 2015 edition of the IBC (chapter 51-50 WAC). Since 1985 the SBCC has been responsible to update new editions of the building code per RCW 19.27.074. The IBC is updated every three years by the International Code Council (ICC). The code development process conducted by the model code organization is open to all interest groups within the design and construction industry and from governmental organizations. See www.iccsafe.org for more information about the model code development process.
The administrative compliance requirements are under the authority of the local government. RCW 19.27.050. Compliance activities including permit issuance, plan review and approval, and inspections occur at the local level. Requirements for construction document submittal and other reporting requirements are determined by the local jurisdiction and are consistent with previously established policies. The proposed amendments to chapter 51-50 WAC include specific technical requirements for building construction to be consistent with national standards.
Professional Services: Washington has had a statewide building code in effect since 1974. The local enforcement authority having jurisdiction administers the codes through the building and/or fire departments. Administrative procedures for state building code compliance are established and will not be changed by the adoption of the update to the current building codes. Small businesses will employ the same types of professional services for the design and construction of buildings and systems to comply with the state building code.
The proposed rule updates the state building code and does not require additional equipment, supplies, labor or other services. Services needed to comply with the building code are existing within the construction industry as required by the local authority having jurisdiction.
Costs of Compliance for Businesses: The cost of compliance incurred by Washington businesses includes training and educational materials. A complete set of the 2015 model codes on CD rom costs $985 for ICC members. These publications are also available online at http://codes.iccsafe.org/I-Codes.html. The ICC chapters offer training for continuing education credits to architects, engineers and building inspectors for $285.
The 2015 edition of the IBC contains fourteen significant amendments with a cost impact. These items were identified through the model code development process, and reviewed by the SBCC building code technical advisory group (TAG) and the economic workgroup.
1. Table 509 Incidental Uses amended to require an automatic sprinkler system or a one hour fire separation where ambulatory care incidental uses occur. The amendment will increase the cost of construction for ambulatory care facilities.
2. Section 3006.2 Hoistway opening protection amended to include Group I-1 Condition 2 assisted living facilities. The amendment will increase the cost of construction for those facilities.
3. Section 1008.3 Illumination emergency power required for means of egress illumination in several additional areas including electrical equipment rooms, fire command centers, and public restrooms. This code change will increase the cost of construction and provides a higher level of safety.
4. Section 1010.1.9.9 Electromagnetically locked egress doors for controlled access are allowed to be used for Group I-1 assisted living facilities. Where the access control is used it will increase the cost of construction.
5. Section 1207 Sound transmission regulation between sleeping units in hotels and motels is added in this section. There will be a cost impact on some facilities not already built to the higher standard.
6. Section 1505.10 Roof gardens and landscaped roofs must meet a standard for external fire design. Roof gardens are optional, where installed there may be a cost associated with meeting the fire standard.
7. Section 1705.12.9 Cold formed steel special bolted moment frames require a periodic special inspection. The amendment will result in added cost for this type of structural element, the benefit is better quality construction. Not many projects will be affected.
8. Section 1904 Concrete durability requirements added to replace the weathering probability map. The amendment may increase the cost of construction for structural concrete but decrease the cost for nonstructural concrete. Cost is variable depending on the project.
9. Table 2304.10.1 Fastening schedule for wood framed buildings amended to be consistent with IRC, resulting in a negligible cost increase and substantial savings by preventing structural deficiency.
10. Section 3005.4 Elevator machine rooms and machinery spaces for fire service access elevators and occupant evacuation elevators are not allowed a reduction in enclosure protection. Not allowing the reduction will increase the cost of construction, and increase fire safety.
11. Section 3102.7 Lateral restraint for membrane covered structures is added. This change may require an increase in capacity for some structural members and will result in a moderate increase in the overall cost of construction. The cost impact is justified on the basis of occupant safety and the reduced chanced [chances] of collapse.
12. Existing building code sections 403.6 and 403.7 require bracing for unreinforced masonry (URM) buildings that undergo an alteration involving fifty percent or more of the building area. Parapets must be reinforced and wall anchors are required at the roof line. The added cost is small compared to total cost of a typical project, and there is no added cost in many jurisdictions in high seismic areas that already have similar provisions or targeted mitigation programs.
13. Existing building code section 403.8 requires evaluation of roof to wall connections for wind load where more than fifty percent of the roof diaphragm is removed. The added cost will apply to deficient buildings in high wind areas.
14. Existing building code section 410.7 adds accessibility to drinking fountains to the requirements. The cost will not exceed twenty percent of the cost for the alteration, as provided in the exception to providing access.
The building code TAG and the SBCC economic workgroup determined there is a cost for compliance on businesses for the following proposed state amendments.
1. Proposal 15-035:
IBC 306.2 Moderate Hazard Factory Industrial Group F-1: Marijuana growing of more than fifteen plants—Marijuana processing.
IBC 312 Utility and Miscellaneous Group U: Marijuana growing of fifteen or fewer plants.
This amendment addresses a new business in Washington state and provides a threshold for classifying the occupancy of buildings or structures used for growing marijuana. The building code TAG modified the proposal to include Group U as an option for occupancy classification of marijuana growing facilities. The SBCC economic workgroup has requested additional input into the appropriate threshold for allowing the Group U occupancy classification used for barns, greenhouses and other utility or agricultural buildings, instead of the Group F-1 moderate hazard factory classification, which can mean added fire safety, sanitary and structural requirements, depending on building area, type of construction, access to water supply and other factors. The current building code is silent on the occupancy classification of these buildings. A state amendment specifying occupancy classification would provide consistency across the state.
SBCC amendments to the fire code provides an exception to the fire flow requirement for Group U occupancies under 500 square feet. A second exception is proposed in the 2015 proposed rule:
507.3 Fire flow. Fire flow requirements for buildings or portions of buildings and facilities shall be determined by an approved method.
Exceptions:
1. Fire flow is not required for structures under 500 square feet with a B, U or R-1 occupancy where structures are at least 30 feet from any other structure and are used only for recreation.
2. In rural and suburban areas in which adequate and reliable water supply systems do not exist, the fire code official is authorized to utilize NFPA 1142 or the International Wildland-Urban Interface Code.
The SBCC economic workgroup requested additional information regarding the licensing of marijuana producers. According to their 2014 annual report, producer licenses have been issued in thirty-two of the thirty-nine counties by the Washington state liquor and cannabis board (WSLCB). The WSLCB rules address the size of marijuana production:
WAC 314-55-075 What is a marijuana producer license and what are the requirements and fees related to a marijuana producer license?
(6) The maximum amount of space for marijuana production is initially limited to two million square feet, to be increased based on marketplace demand, but not to exceed eight and one-half million square feet without board approval. Applicants must designate on their operating plan the size category of the production premises and the amount of actual square footage in their premises that will be designated as plant canopy. There are three categories as follows:
(a) Tier 1 – Less than two thousand square feet;
(b) Tier 2 – Two thousand square feet to ten thousand square feet; and
(c) Tier 3 – Ten thousand square feet to thirty thousand square feet.
From the WSLCB 2014 Annual Report
2. Proposal 15-041:
IBC Section 202 Definitions, Section 2902.5.4 Bottle Filling Stations: For new construction, this amendment requires bottle filling stations in Group E school buildings with an occupant load over thirty, and permits substituting bottle filling stations for up to fifty percent of required drinking fountains in all buildings. Most water bottle filling station models do cost more than regular drinking fountains – the range of additional costs depends on the model. There are stand-alone water bottle filling station versions that would be close to or just slightly above the cost of a regular drinking fountain. A typical price would be $400-800 depending on whether the water is chilled and filtered. The building code TAG modified the proposal to be mandatory in schools and voluntary in all other buildings.
3. Proposal 15-044:
IBC Section 427 Electric Vehicle (EV) Charging Infrastructure: For new construction with over ten on-site parking spaces, this proposed state amendment requires electric vehicle infrastructure be provided to five percent of parking spaces serving Group B business and Group R-1 residential motels and hotels and ten percent of parking spaces serving Group R-2 apartment buildings. The infrastructure may be added electrical service capacity including space for future meters, panels capable of adding 208/240 volt 40 amp service capacity and conduit to the parking spaces served. The estimated cost ranges from $484 per parking space for a building mounted system to $1254 for a free standing charging station. According to the proponent's statement of need: "If the basic design of the building electrical room and EV designated parking are considered during design, cost for adding EV charging will be minimized. Installing any needed electrical conduit during construction will be less expensive than providing it after the parking is paved, sidewalks are poured and the landscaping is complete."
4. Proposal 15-048:
IBC Appendix N Solar Readiness: This proposed state amendment is a nonmandatory appendix chapter available for local adoption. For new nonresidential buildings this amendment defines a "Solar Zone" and specifies requirements and elements of a solar ready zone. The SBCC economic workgroup review concluded that since the appendix is optional and the local jurisdiction can amend the appendix where adopted, that there is not a cost based on SBCC action.
Loss of Sales or Revenue: The proposed rules make the state code for building construction consistent with national standards. Businesses with new products or updated test or design standards are recognized in the updated building code.
The update will result in some cost outlay for some small businesses for specific building projects, for a transition period. Other small businesses would see an increase in revenue. The amendments to the building codes affect over 25,000 small businesses in the state, where construction activity occurs. The primary intent of the amendments is to improve the safety features in buildings and provide consistency and fairness across the state, for a predictable business environment. The amendments should result in enhanced safety and value in buildings.
Cost of Compliance for Small Businesses: Determine whether the proposed rule will have a disproportionate cost impact on small businesses, compare the cost of compliance for small business with the cost of compliance for the ten percent of businesses that are the largest businesses.
The majority of businesses affected by the updates to the building codes are small businesses; over ninety-five percent of those listed in the construction and related industries have under fifty employees. The costs per employee are comparable between the largest businesses and the majority of small businesses. The cost to comply with the updated codes is not a disproportionate impact on small business. Where SBCC found the cost of compliance for small businesses to be disproportionate, the proposed rule mitigates the cost. The proposed rules include a definition of small business and provide exceptions for compliance with the updated rule.
Reducing the Costs of the Rule on Small Businesses: The revision history for the 2015 model code amendments shows several hundred amendments proposed by industry and local governments which add flexibility and clarity to the code and coordinate rules, and represent a savings for small business building owners and operators.
SBCC conducted a detailed review process, including participation at the national code development hearings, to document significant economic impacts of the proposed code amendments.
These amendments are proposed to reduce the cost of compliance on small businesses:
IBC 304.1 Business Group B. Small food processing establishments and commercial kitchens no larger than 2,500 sq. ft. and with no associated dining area are now Group B occupancies. The same uses which are larger than 2,500 sq. ft. are unchanged as F-1.
This amendment allows small businesses operating in buildings with a kitchen to be treated as a business occupancy instead of a factory occupancy.
IBC 304.1 Business Group B. Clarifying language has been added relating to the occupancy classification of training or skill development not in a school or academic program. Examples have been added including but not limited to tutoring centers, martial arts studios, gymnastics and similar uses when not classified as Group A.
This amendment allows small businesses providing educational services to be classified as business occupancy instead of an educational occupancy.
IBC 310 Residential Group R-3. This amendment uses a Group R-3 classification for lodging homes, also known as bed and breakfast, with five or fewer guestrooms. This allows these small businesses to operate as single family homes.
IBC 2902.2 Plumbing Fixtures, Separate Facilities. This amendment allows a single restroom facility in a drinking and dining establishment with an occupant load of thirty or fewer.
Small Businesses Involved in the Development of the Rule: SBCC conducted eleven open public meetings of the building code TAG, available via telephone conference bridge and over the internet, and allowed comment on every item on every agenda. SBCC appointed over one hundred representatives of all segments of the business and construction community to serve on the TAGs.
List of Industries: Below is a list of industries required to comply with the building code:
Estimate of the Number of Jobs That Will Be Created or Lost: The adoption of the latest code edition is not expected to significantly impact the number of jobs in the construction industry. These rules are likely to be job neutral overall, i.e., they will not result in any job gains or losses. The scheduled effective date of the new edition is July 1, 2016. Building permits issued prior to that date will be vested under the 2012 building code. Permits issued for projects under the 2015 code edition will start with the 2017 construction season.
The construction industry has experienced growth over the period June 2014 to June 2015. Data from current employment statistics (CES):
A copy of the statement may be obtained by contacting Tim Nogler, P.O. Box 41449, Olympia, WA 98504-1449, phone (360) 407-9277, fax (360) 407-9088, e-mail sbcc@ga.wa.gov.
A cost-benefit analysis is not required under RCW 34.05.328. SBCC is not one of the agencies identified as required to prepare an analysis. However, SBCC intends to prepare an analysis prior to the final adoption of these rules and a copy can be requested using the same information as provided for the small business economic impact statement.
August 4, 2015
David F. Kokot
Chair
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-003 International Building Code.
The ((2012)) 2015 edition of the International Building Code, including Appendix E, published by the International Code Council is hereby adopted by reference with the exceptions noted in this chapter of the Washington Administrative Code.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-007 Exceptions.
The exceptions and amendments to the International Building Code contained in the provisions of chapter 19.27 RCW shall apply in case of conflict with any of the provisions of these rules.
The provisions of this code do not apply to temporary growing structures used solely for the commercial production of horticultural plants including ornamental plants, flowers, vegetables, and fruits. "Temporary growing structure" means a structure that has the sides and roof covered with polyethylene, polyvinyl, or similar flexible synthetic material and is used to provide plants with either frost protection or increased heat retention. A temporary growing structure is not considered a building for purposes of this code.
The provisions of this code do not apply to the construction, alteration, or repair of temporary worker housing except as provided by rule adopted under chapter 70.114A RCW or chapter 37, Laws of 1998 (SB 6168). "Temporary worker housing" means a place, area, or piece of land where sleeping places or housing sites are provided by an employer for his or her employees or by another person, including a temporary worker housing operator, who is providing such accommodations for employees, for temporary, seasonal occupancy, and includes "labor camps" under RCW 70.54.110.
Codes referenced which are not adopted through RCW 19.27.031 or chapter 19.27A RCW shall not apply unless specifically adopted by the authority having jurisdiction. The ((2012)) 2015 International Existing Building Code is included in the adoption of this code in Section ((3401.5)) 101.4.7 and amended in WAC 51-50-480000.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-008 Implementation.
The International Building Code adopted under chapter 51-50 WAC shall become effective in all counties and cities of this state on July 1, ((2013)) 2016.
AMENDATORY SECTION (Amending WSR 04-01-108, filed 12/17/03, effective 7/1/04)
WAC 51-50-009 Recyclable materials, compost, and solid waste storage.
For the purposes of this section, the following definitions shall apply:
COMPOST means biodegradable solid wastes that are separated for composting such as food waste, food soiled paper and yard waste.
RECYCLED MATERIALS means those solid wastes that are separated for recycling or reuse, such as papers, metals and glass.
All local jurisdictions shall require that space be ((provide)) provided for the storage of recycled materials, compost, and solid waste for all new buildings.
The storage area shall be designed to meet the needs of the occupancy, efficiency of pickup, and shall be available to occupants and haulers.
AMENDATORY SECTION (Amending WSR 14-24-089, filed 12/1/14, effective 5/1/15)
WAC 51-50-0200 Chapter 2—Definitions.
SECTION 202—DEFINITIONS.
ADULT FAMILY HOME. A dwelling, licensed by Washington state, in which a person or persons provide personal care, special care, room and board to more than one but not more than six adults who are not related by blood or marriage to the person or persons providing the services.
((AIR-IMPERMEABLE INSULATION. An insulation having an air permeance equal to or less than 0.02 L/s-m2 at 75 Pa pressure differential tested in accordance with ASTM E2178 or ASTM E283.)) ASSISTED LIVING FACILITY. A home or other institution, licensed by the state of Washington, providing housing, basic services and assuming general responsibility for the safety and well-being of residents under chapters 18.20 RCW and 388-78A WAC. These facilities may provide care to residents with symptoms consistent with dementia requiring additional security measures.
BOTTLE FILLING STATION. A plumbing fixture connected to the potable water distribution system and sanitary drainage system that is designed and intended for filling personal use drinking water bottles or containers not less than 10 inches (254 mm) in height. Such fixtures can be separate from or integral to a drinking fountain and can incorporate a water filter and a cooling system for chilling the drinking water.
CHILD CARE. The care of children during any period of a 24-hour day.
CHILD CARE, FAMILY HOME. A child care facility, licensed by Washington state, located in the dwelling of the person or persons under whose direct care and supervision the child is placed, for the care of twelve or fewer children, including children who reside at the home.
CLIMATE ZONE. A geographical region that has been assigned climatic criteria as specified in the Washington State Energy Code.
CLUSTER. Clusters are multiple portable school classrooms separated by less than the requirements of the building code for separate buildings.
EFFICIENCY DWELLING UNIT. A dwelling unit containing only one habitable room.
HOSPICE CARE CENTER. A building or portion thereof used on a 24-hour basis for the provision of hospice services to terminally ill inpatients.
NIGHTCLUB. An A-2 Occupancy use under the 2006 International Building Code in which the aggregate area of concentrated use of unfixed chairs and standing space that is specifically designated and primarily used for dancing or viewing performers exceeds three hundred fifty square feet, excluding adjacent lobby areas. "Nightclub" does not include theaters with fixed seating, banquet halls, or lodge halls.
((NONSTRUCTURAL CONCRETE. Any element made of plain or reinforced concrete that is not part of a structural system required to transfer either gravity or lateral loads to the ground.))
PORTABLE SCHOOL CLASSROOM. A prefabricated structure consisting of one or more rooms with direct exterior egress from the classroom(s). The structure is transportable in one or more sections and is designed to be used as an educational space with or without a permanent foundation. The structure shall be capable of being demounted and relocated to other locations as needs arise.
SMALL BUSINESS. Any business entity (including a sole proprietorship, corporation, partnership or other legal entity) which is owned and operated independently from all other businesses, which has the purpose of making a profit, and which has fifty or fewer employees.
STAGED EVACUATION. A method of emergency response, that engages building components and trained staff to provide occupant safety during an emergency. Emergency response involves moving or holding certain occupants at temporary locations for a brief period of time before evacuating the building. This response is used by ambulatory surgery facility and assisted living facilities to protect the health and safety of fragile occupants and residents.
NEW SECTION
WAC 51-50-0306 Section 306—Factory Group F.
306.2 Moderate-hazard factory industrial, Group F-1. Factory industrial uses that are not classified as factory industrial F-2 low hazard shall be classified as F-1 moderate hazard and shall include, but not be limited to, the following:
Aircraft (manufacturing, not to include repair)
Appliances
Athletic equipment
Automobiles and other motor vehicles
Bakeries
Beverages: Over 16 percent alcohol content
Bicycles
Boats
Brooms or brushes
Business machines
Cameras and photo equipment
Canvas or similar fabric
Carpets and rugs (includes cleaning)
Clothing
Construction and agricultural machinery
Disinfectants
Dry cleaning and dyeing
Electric generation plants
Electronics
Engines (including rebuilding)
Food processing establishments and commercial kitchens not associated with restaurants, cafeterias and similar dining facilities more than 2,500 square feet (232m2) in area
Furniture
Hemp products
Jute products
Laundries
Leather products
Machinery
Marijuana growing of more than 15 plants
Marijuana processing
Metals
Millwork (sash and door)
Motion pictures and television filming (without spectators)
Musical instruments
Optical goods
Paper mills or products
Photographic film
Plastic products
Printing or publishing
Recreational vehicles
Refuse incineration
Shoes
Soaps and detergents
Textiles
Tobacco
Trailers
Upholstering
Wood; distillation
Woodworking (cabinet)
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0308 Section 308—Institutional Group I.
308.2 Definitions. The following terms are defined in Chapter 2:
24-HOUR CARE.
Custodial Care.
Detoxification Facilities.
Foster Care Facilities.
HOSPICE CARE CENTER.
Hospitals and psychiatric hospitals.
Incapable of self-preservation.
Medical care.
Nursing homes.
((308.3.2)) 308.3.3 Licensed care facilities. Assisted living facilities as licensed by Washington state under chapter 388-78A WAC and residential treatment facilities as licensed by Washington state under chapter 246-337 WAC shall be classified as Group ((R-2)) I-1, Condition 2.
((308.3.3)) 308.3.5 Adult family homes. Adult family homes licensed by Washington state shall be classified as Group R-3 or shall comply with the International Residential Code.
308.4 Institutional Group I-2. ((This)) Institutional Group I-2 occupancy shall include buildings and structures used for medical care on a 24-hour basis for more than five persons who are incapable of self-preservation. This group shall include, but not be limited to, the following:
Foster care facilities.
Detoxification facilities.
Hospice care centers.
Hospitals.
Nursing homes.
Psychiatric hospitals.
((308.4.2 Licensed care facilities. Assisted living facilities as licensed by Washington state under chapter 388-78A WAC and residential treatment facilities as licensed by Washington state under chapter 246-337 WAC shall be classified as Group R-2.))
308.6.5 Family home child care. Family home child care licensed by Washington state for the care of twelve or fewer children shall be classified as Group R-3 or shall comply with the International Residential Code.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0310 Section 310—Residential Group R.
310.2 Definitions. The following terms are defined in Chapter 2:
ADULT FAMILY HOME.
BOARDING HOUSE.
CHILD CARE.
CHILD CARE, FAMILY HOME.
CONGREGATE LIVING FACILITIES.
DORMITORY.
GROUP HOME.
GUEST ROOM.
LODGING HOUSE.
PERSONAL CARE SERVICE.
TRANSIENT.
310.4 Residential Group R-2. Residential occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent in nature, including:
Apartment houses
((Assisted living facilities as licensed by Washington state under chapter 388-78A WAC))
Boarding houses (nontransient) with more than 16 occupants
Congregate living facilities (nontransient) with more than 16 occupants
Convents
Dormitories
Fraternities and sororities
Hotels (nontransient)
Live/work units
Monasteries
Motels (nontransient)
((Residential treatment facilities as licensed by Washington state under chapter 246-337 WAC))
Vacation timeshare properties
((310.5.2)) 310.5.3 Adult family homes, family home child care. Adult family homes and family home child care facilities that are within a single-family home are permitted to comply with the International Residential Code.
((310.5.3)) 310.5.4 Foster family care homes. Foster family care homes licensed by Washington state are permitted to comply with the International Residential Code, as an accessory use to a dwelling, for six or fewer children including those of the resident family.
310.6 Residential Group R-4. R-4 classification is not adopted. Any reference in this code to R-4 does not apply.
NEW SECTION
WAC 51-50-0312 Section 312—Utility and miscellaneous Group U.
312.1 General. Buildings and structures of an accessory character and miscellaneous structures not classified in any specific occupancy shall be constructed, equipped and maintained to conform to the requirements of this code commensurate with the fire and life hazard incidental to their occupancy. Group U shall include, but not be limited to, the following:
Agricultural buildings
Aircraft hangers, accessory to a one- or two-family residence (see Section 412.5)
Barns
Carports
Fences more than 6 feet (1829 mm) in height
Grain silos, accessory to a residential occupancy
Greenhouses
Livestock shelters
Marijuana growing of 15 or fewer plants
Private garages
Retaining walls
Sheds
Stables
Tanks
Towers
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0403 Section 403—High-rise buildings.
403.5.4 Smokeproof ((exit)) enclosures. Every required interior exit stairway serving floors more than 75 feet (22,860 mm) above the lowest level of fire department vehicle access shall be a smokeproof enclosure in accordance with Sections 909.20 and ((1022.10)) 1023.10.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0407 ((Group I-2.)) Reserved.
((407.4.3.2 Separation. Care suites shall be separated from other portions of the building by a smoke partition complying with Section 710. Partitions within suites are not required to be smoke resistant or fire resistance rated unless required by another section of this code.))
NEW SECTION
WAC 51-50-0408 Group I-3.
408.9 Smoke removal. To facilitate smoke removal in post-fire salvage and overhaul operations, each smoke compartment shall be equipped with natural or mechanical ventilation for removal of products of combustion in accordance with one of the following:
1. Easily identifiable, manually operable windows or panels shall be distributed around the perimeter of each floor at not more than 50-foot (15,240 mm) intervals. The area of operable windows or panels shall be not less than 40 square feet (3.7 m2) per 50 linear feet (15,240 mm) of perimeter.
2. Roof vents capable of being manually operated or skylights with glazing that can be cleared by firefighters, with dimensions as set forth in Section 910.3.3, shall be distributed in accordance with Section 910.3.4. The maximum center-to-center spacing between vents shall be 100 feet (45,720 mm) and the venting ratio of effecting area of vent openings to floor area of a smoke compartment shall be 1:150.
3. Mechanical air-handling equipment providing one exhaust air change every 15 minutes for the area involved. Return and exhaust air shall be moved directly to the outside without recirculation to other portions of the building.
4. Any other approved design that will produce equivalent results.
NEW SECTION
WAC 51-50-0412 Section 412—Aircraft-related occupancies.
[F]412.8.3 Means of egress. The means of egress from heliports and helistops shall comply with the provisions of Chapter 10. Landing areas located on buildings or structures shall have two or more means of egress. For landing areas less than 60 feet in length or less than 2,000 square feet in area, the second means of egress is permitted to be a fire escape, alternating tread device or ladder leading to the floor below. On Group I-2 roofs with helistops or helipads, rooftop structures enclosing exit stair enclosures or elevator shafts shall be enclosed with fire barriers and opening protectives that match the rating of their respective shaft enclosures below.
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040. AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0420 Section 420—Groups I-1, R-1, R-2, R-3.
((420.6 Subdivision of building spaces—Smoke barriers. Smoke barriers complying with Section 709 shall be installed on all floors of a Group R-2 boarding home or residential treatment facility licensed by Washington state. The smoke barrier shall subdivide the floor into at least two compartments complying with Section 407.5.))
420.7 Adult family homes. This section shall apply to all newly constructed adult family homes and all existing single-family homes being converted to adult family homes. This section shall not apply to those adult family homes licensed by the state of Washington department of social and health services prior to July 1, 2001.
((420.7.1 Submittal standards. In addition to the requirements of Section 107, the submittal shall identify the project as a Group R-3 adult family home occupancy. A floor plan shall be submitted identifying the means of egress and the components in the means of egress such as stairs, ramps, platform lifts and elevators. The plans shall indicate the rooms used for clients and the sleeping room classification of each room.))
420.7.2 Sleeping room classification. Each sleeping room in an adult family home shall be classified as one of the following:
1. Type S - Where the means of egress contains stairs, elevators or platform lifts.
2. Type NS1 - Where one means of egress is at grade level or a ramp constructed in accordance with Section 420.7.8 is provided.
3. Type NS2 - Where two means of egress are at grade level or ramps constructed in accordance with Section 420.7.8 are provided.
420.7.3 Types of locking devices and door activation. All bedrooms and bathroom doors shall be openable from the outside when locked.
Every closet door shall be readily openable from the inside.
Operable parts of door handles, pulls, latches, locks and other devices installed in adult family homes shall be operable with one hand and shall not require tight grasping, pinching, or twisting of the wrist. Pocket doors shall have graspable hardware available when in the closed or open position.
The force required to activate operable parts shall be 5.0 pounds (22.2 N) maximum. Required exit door(s) shall have no additional locking devices. Required exit door hardware shall unlock inside and outside mechanisms when exiting the building allowing reentry into the adult family home without the use of a key, tool or special knowledge.
420.7.4 Smoke and carbon monoxide alarm requirements. ((All adult family homes shall be equipped with smoke and carbon monoxide alarms installed as required in Section 908.7.)) Alarms shall be installed in such a manner so that the detection device warning is audible from all areas of the dwelling upon activation of a single alarm.
420.7.5 Escape windows and doors. Every sleeping room shall be provided with emergency escape and rescue windows as required by Section ((1029)) 1030. No alternatives to the sill height such as steps, raised platforms or other devices placed by the openings will be approved as meeting this requirement.
420.7.6 ((Fire apparatus access roads and water supply for fire protection. Adult family homes shall be served by fire apparatus access roads and water supplies meeting the requirements of the local jurisdiction.)) Reserved.
420.7.7 Grab bar general requirements. Where facilities are designated for use by adult family home clients, grab bars for water closets, bathtubs and shower stalls shall be installed according ((to this section)) ICC A117.1.
((420.7.7.1 Grab bar cross section. Grab bars with a circular cross section shall have an outside diameter of 1 1/4 inches minimum and 2 inches maximum. Grab bars with noncircular cross section shall have a cross section dimension of 2 inches maximum and a perimeter dimension of 4 inches minimum and 4 5/8 inches maximum.
420.7.7.2 Grab Bar Installation. Grab bars shall have a spacing of 1 1/2 inches between the wall and the bar. Projecting objects, control valves and bathtub or shower stall enclosure features above, below and at the ends of the grab bar shall have a clear space of 1 1/2 inches to the grab bar.
Grab bars shall have a structural strength of 250 pounds applied at any point on the grab bar, fastener, mounting device or supporting structural member. Grab bars shall not be supported directly by any residential grade fiberglass bathing or showering unit. Acrylic bars found in bathing units shall be removed.
Fixed position grab bars, when mounted, shall not rotate, spin or move and have a graspable surface finish.
420.7.7.3 Grab Bars at Water Closets. Water closets shall have grab bars mounted on both sides. Grab bars can be a combination of fixed position and swing-up bars. Grab bars shall meet the requirements of Section 420.7.7. Grab bars shall mount between 33 inches and 36 inches above floor grade. Centerline distance between grab bars, regardless of type used, shall be between 25 inches minimum and 30 inches maximum.
420.7.7.3.1 Fixed position grab bars. Fixed position grab bars shall be a minimum of 36 inches in length and start 12 inches from the rear wall.
420.7.7.3.2 Swing-up grab bars. Swing-up grab bars shall be a minimum of 28 inches in length from the rear wall.
420.7.7.4 Grab bars at bathtubs. Horizontal and vertical grab bars shall meet the requirements of Section 420.7.7.
420.7.7.4.1 Vertical grab bars. Vertical grab bars shall be a minimum of 18 inches long and installed at the control end wall and head end wall. Grab bars shall mount within 4 inches of the exterior of the bath tub edge or within 4 inches within the bath tub. The bottom end of the bar shall start between 36 inches and 42 inches above floor grade.
420.7.7.4.2 Horizontal grab bars. Horizontal grab bars shall be provided at the control end, head end, and the back wall within the bathtub area. Grab bars shall be mounted between 33 inches and 36 inches above floor grade. Control end and head end grab bars shall be 24 inches minimum in length. Back wall grab bars shall be 36 inches minimum in length.
420.7.7.5 Grab bars at shower stalls. Where shower stalls are provided to meet the requirements for bathing facilities, grab bars shall meet the requirements of Section 420.7.7.
420.7.7.5.1 Vertical grab bars. Vertical grab bars shall be 18 inches minimum in length and installed at the control end wall and head end wall. Vertical bars shall be mounted within 4 inches of the exterior of the shower stall or within 4 inches of the inside of the shower stall. The bottom end of vertical bars mount between 36 inches and 42 inches above floor grade.
420.7.7.5.2 Horizontal grab bars. Horizontal grab bars shall be installed on all sides of the shower stall mounted between 33 inches and 36 inches above the floor grade. Horizontal grab bars shall be a maximum of 6 inches from adjacent walls. Horizontal grab bars shall not interfere with shower control valves.
420.7.8 Ramps. All interior and exterior ramps, when provided, shall be constructed in accordance with Section 1010 with a maximum slope of 1 vertical to 12 horizontal.
420.7.8.1 Handrails for ramps. Handrails shall be provided for ramps in accordance with Section 1010.9.
420.7.9 Stair treads and risers. Stair treads and risers shall be constructed in accordance with Section 1009.
420.7.9.1 Handrails for treads and risers. Handrails shall be installed on both sides of treads and risers numbering from one riser to multiple risers. Handrails shall comply with Section 1009.15.
420.7.10)) 420.7.8 Shower stalls. Where provided to meet the requirements for bathing facilities, the minimum size of shower stalls for an adult family home shall be 30 inches deep by 48 inches long.
420.8 Licensed care cooking facilities. In Group I-1, Condition 2 assisted living facilities licensed under chapter 388-78A WAC and residential treatment facilities licensed under chapter 246-337 WAC, rooms or spaces that contain a cooking facility with domestic cooking appliances shall be permitted to be open to the corridor where all of the following criteria are met:
1. The number of care recipients housed in the smoke compartment is not greater than 30.
2. The number of care recipients served by the cooking facility is not greater than 30.
3. Only one cooking facility area is permitted in a smoke compartment.
4. The types of domestic cooking appliances permitted are limited to ovens, cooktops, ranges, warmers and microwaves.
5. The corridor is a clearly identified space delineated by construction or floor pattern, material or color.
6. The space containing the domestic cooking facility shall be arranged so as not to obstruct access to the required exit.
7. A domestic cooking hood installed and constructed in accordance with Section 505 of the International Mechanical Code is provided over the cooktop or range.
8. The domestic cooking hood provided over the cooktop or range shall be equipped with an automatic fire-extinguishing system of a type recognized for protection of domestic cooking equipment. Preengineered automatic extinguishing systems shall be tested in accordance with UL 300A and listed and labeled for the intended application. The system shall be installed in accordance with this code, its listing and the manufacturer's instructions.
9. A manual actuation device for the hood suppression system shall be installed in accordance with Sections 904.12.1 and 904.12.2.
10. An interlock device shall be provided such that upon activation of the hood suppression system, the power or fuel supply to the cooktop or range will be turned off.
11. A shut-off for the fuel and electrical power supply to the cooking equipment shall be provided in a location that is accessible only to staff.
12. A timer shall be provided that automatically deactivates the cooking appliances within a period of not more than 120 minutes.
13. A portable fire extinguisher shall be installed in accordance with Section 906 of the International Fire Code.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0422 Section 422—((Reserved)) Ambulatory care facilities.
422.3.1 Means of egress. Where ambulatory care facilities require smoke compartmentation in accordance with Section 422.3, the fire safety evacuation plans provided in accordance with Section 1001.4 shall identify the building components necessary to support a staged evacuation emergency response in accordance with Sections 404 and 408 of the International Fire Code.
NEW SECTION
WAC 51-50-0427 Section 427—Electric vehicle charging infrastructure.
427.1 Scope. The provisions of this section shall apply to the construction of new buildings serving Group B, Group R-1, and Group R-2 occupancies.
427.2 Required electric vehicle charging infrastructure. Where parking is provided, parking spaces shall be provided with electric vehicle charging infrastructure in compliance with Sections 425.3, 425.4, and 425.5 based on the schedule in Table 425.1.
Table 427.1
Required Electric Vehicle Charging Infrastructure
427.3 Electrical room(s). Electrical room(s) shall be designed to accommodate the electrical equipment and distribution required to serve a minimum of 20 percent of the total parking spaces with 208/240 V 40-amp electric vehicle charging infrastructure.
427.4 Electric vehicle charging infrastructure. Electric vehicle charging infrastructure shall be installed meeting one of the following requirements:
1. A minimum number of 208/240 V 40-amp, electric vehicle charging stations required to serve the parking spaces specified in Table 425.1. The electric vehicle charging stations shall be located to serve spaces designated for parking and charging electric vehicles, or
2. Additional service capacity, space for future meters, panel capacity or space for additional panels, and conduit for future installation of electric vehicle charging stations. The service capacity and conduit size shall be designed to accommodate the future installation of the number of 208/240 V 40-amp, electric vehicle charging stations specified in Table 425.1. The conduit shall terminate at spaces designated for parking and charging electric vehicles in the future.
427.5 Electric vehicle charging infrastructure for accessible parking spaces. When electric vehicle charging infrastructure is required, one accessible parking space shall be served by electric vehicle charging infrastructure. The electric vehicle charging infrastructure may also serve adjacent parking spaces not designated as accessible parking.
NEW SECTION
WAC 51-50-0503 Section 503—General building height and area limitations.
503.1 General. Unless otherwise specifically modified in Chapter 4 and this chapter, building height, number of stories and building area shall not exceed the limits specified in Sections 504 and 506 based on the type of construction as determined by Section 602 and the occupancies as determined by Section 302 except as modified hereafter. Building height, number of stories and building area provisions shall be applied independently. For the purposes of determining area limitations, height limitations and type of construction, each portion of a building separated by one or more fire walls complying with Section 706 shall be considered to be a separate building.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0504 Section 504—Building height and number of stories.
((504.3)) 504.4.1 Stair enclosure pressurization increase. For Group R1 and R2 occupancies in buildings of Type VA construction equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1, the maximum number of stories permitted in Section 504.2 may be increased by one provided the interior exit stairways and ramps are pressurized in accordance with Section 909.((20 and Section 909.11.
504.4 Roof structures. (Same as 2012 IBC except section number revised))) Legally required standby power shall be provided for buildings constructed in compliance with this section and be connected to stairway shaft pressurization equipment, elevators and lifts used for accessible means of egress, hoistway pressurization equipment (if provided) and other life safety equipment as determined by the authority having jurisdiction. For the purposes of this section, legally required standby power shall comply with NEC Section 701.12, options (A), (B), (C), (D), (F), or (G).
NEW SECTION
WAC 51-50-0505 Section 505—Mezzanines and equipment platforms.
505.2.1 Area limitation. The aggregate area of a mezzanine or mezzanines within a room shall be not greater than one-third of the floor area of that room or space in which they are located. The enclosed portion of a room shall not be included in a determination of the floor area of the room in which the mezzanine is located. In determining the allowable mezzanine area, the area of the mezzanine shall not be included in the floor area of the room.
505.2.1.1 Aggregate area of mezzanines and equipment platforms. Where a room contains both a mezzanine and an equipment platform, the aggregate area of the two raised floor levels shall be not greater than two-thirds of the floor area of the room or space in which they are located. The area of the mezzanine shall not exceed the area determined according to Section 505.2.1.
505.3.1 Area limitation. The aggregate area of all equipment platforms within a room shall be not greater than two-thirds of the area of the room in which they are located. Where an equipment platform is located in the same room as a mezzanine, the area of the mezzanine shall be determined by Section 505.2.1 and the combined aggregate area of the equipment platforms and mezzanines shall be not greater than two-thirds of the room in which they are located. The area of the mezzanine shall not exceed the area determined according to Section 505.2.1.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0506 ((Building area modifications.)) Reserved.
((506.4 Single occupancy buildings with more than one story. The total allowable building area of a single occupancy building with more than one story above grade plane shall be determined in accordance with this section. The actual aggregate building area at all stories in the building shall not exceed the total allowable building area.
506.5 Mixed occupancy area determination. The total allowable building area for buildings containing mixed occupancies shall be determined in accordance with the applicable provisions of this section. Basements need not be included in the total allowable building area, provided each such basement does not exceed the area permitted for a building with no more than one story above grade plane.))
NEW SECTION
WAC 51-50-0510 Section 510—Special provisions.
510.2 Horizontal building separation allowance. A building shall be considered as separate and distinct buildings for the purpose of determining area limitations, continuity of fire walls, limitation of number of stories and type of construction where all of the following conditions are met:
1. The buildings are separated with a horizontal assembly having a fire-resistance rating of not less than 3 hours.
2. The building below the horizontal assembly is of Type IA construction.
3. Shaft, stairway, ramp and escalator enclosures through the horizontal assembly shall have not less than a 2-hour fire-resistance rating with opening protective in accordance with Section 716.5.
4. The building or buildings above the horizontal assembly shall be permitted to have multiple Group A occupancy uses, each with an occupant load of less 300, or Group B, Group I-1, Condition 2 licensed care facilities, M, R, or S occupancies.
5. The building below the horizontal assembly shall be protected throughout by an approved automatic sprinkler system in accordance with Section 903.3.1.1, and shall be permitted to be any occupancy allowed by this code except Group H.
6. The maximum building height in feet (mm) shall not exceed the limits set forth in Section 504.3 for the building having the smaller allowable height as measured from the grade plane. Group I-1, Condition 2 licensed care facilities shall be permitted to use the values for maximum height in feet for Group R-2 occupancies.
NEW SECTION
WAC 51-50-0706 Section 706—Fire walls.
706.1 General. Fire walls shall be constructed in accordance with Sections 706.2 through 706.11. The extent and location of such fire walls shall provide a complete separation. Where a fire wall also separates occupancies that are required to be separated by a fire barrier wall, the most restrictive requirements of each separation shall apply.
NEW SECTION
WAC 51-50-0716 Section 716—Opening protectives.
716.5.9 Door closing. Fire doors shall be latching and self- or automatic-closing in accordance with this section.
AMENDATORY SECTION (Amending WSR 14-24-089, filed 12/1/14, effective 5/1/15)
WAC 51-50-0903 Section 903—Automatic sprinkler systems.
903.2.1.6 Assembly occupancies on roofs. Where an occupied roof has an assembly occupancy with an occupant load exceeding 100 for Group A-2, and 300 for other Group A occupancies, the building shall be equipped with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2.
903.2.1.8 Nightclub. An automatic sprinkler system shall be provided throughout Group A-2 nightclubs as defined in this code.
903.2.3 Group E. An automatic sprinkler system shall be provided for Group E ((Occupancies)) fire areas.
[F] 903.2.6 Group I. An automatic sprinkler system shall be provided throughout buildings with a Group I fire area.
903.2.7 Group M. An automatic sprinkler system shall be provided throughout buildings containing a Group M occupancy, where one of the following conditions exists:
1. A Group M fire area exceeds 12,000 square feet (1115 m2).
2. A Group M fire area is located more than three stories above grade plane.
3. The combined area of all Group M fire areas on all floors, including any mezzanines, exceeds 24,000 square feet (2230 m2).
4. Where a Group M occupancy that is used for the display and sale of upholstered furniture or mattresses exceeds 5000 square feet (464 m2).
903.2.8 Group R. An automatic fire sprinkler system installed in accordance with Section 903.3 shall be provided throughout all buildings with a Group R fire area.
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040. AMENDATORY SECTION (Amending WSR 12-01-099, filed 12/20/11, effective 4/1/12)
WAC 51-50-0907 Section 907—Fire alarm and detection systems.
[F] 907.2.3 Group E. A manual fire alarm system that initiates the occupant notification signal utilizing an emergency voice/alarm communication system meeting the requirements of Section 907.5.2.2 and installed in accordance with Section 907.6 shall be installed in Group E occupancies. When automatic sprinkler systems or smoke detectors are installed, such systems or detectors shall be connected to the building fire alarm system.
[F] 907.2.6 Group I. A manual fire alarm system that activates the occupant notification system shall be installed in Group I occupancies. An automatic smoke detection system that notifies the occupant notification system shall be provided in accordance with Sections 907.2.6.1, 907.2.6.2, 907.2.6.3.3 and 907.2.6.4.
[F] 907.2.6.1 Group I-1. An automatic smoke detection system shall be installed in corridors, waiting areas open to corridors and habitable spaces other than sleeping units and kitchens. The system shall be activated in accordance with Section 907.4.
[F] 907.2.6.4 Group I-4 ((child care facilities)) occupancies. ((An automatic smoke detection system that activates)) A manual fire alarm system that initiates the occupant notification ((system in accordance with Sections 907.6 through 907.6.2.3.2 shall be provided and installed in accordance with NFPA 72.)) signal utilizing an emergency voice/alarm communication system meeting the requirements of Section 907.5.2.2 and installed in accordance with Section 907.6 shall be installed in Group I-4 occupancies. When automatic sprinkler systems or smoke detectors are installed, such systems or detectors shall be connected to the building fire alarm system.
907.2.9.1.1 Group R-2 assisted living facilities. A manual fire alarm system that activates the occupant notification system in accordance with Section 907.5 shall be installed in Group R-2 occupancies where the building contains an assisted living facility licensed by the state of Washington.
907.2.9.4 Group R-2 assisted living facilities. An automatic smoke detection system that activates the occupant notification system in accordance with Section 907.5 shall be installed in corridors, waiting areas open to corridors and habitable spaces other than sleeping units and kitchens located in Group R-2 assisted living facilities licensed by the state of Washington.
907.5.2.1.2 Maximum sound pressure. The maximum sound pressure level for audible alarm notification appliances shall be 110 dBA at the minimum hearing distance from the audible appliance. For systems operating in public mode, the maximum sound pressure level shall not exceed 30 dBA over the average ambient sound level. Where the average ambient noise is greater than 95 dBA, visible alarm notification appliances shall be provided in accordance with NFPA 72 and audible alarm notification appliances shall be required.
907.10 NICET: National Institute for Certification in Engineering Technologies.
907.10.1 Scope. This section shall apply to new and existing fire alarm systems.
907.10.2 Design review. All construction documents shall be reviewed by a NICET III in fire alarms or a licensed professional engineer (PE) in Washington prior to being submitted for permitting. The reviewing professional shall submit a stamped, signed, and dated letter; or a verification method approved by the local authority having jurisdiction indicating the system has been reviewed and meets or exceeds the design requirements of the state of Washington and the local jurisdiction. (Effective July 1, 2017.)
907.10.3 Installation/maintenance. All installation, inspection, testing, maintenance and programing not defined as "electrical work" by chapter 19.28 RCW shall be completed by a NICET II in fire alarms. (Effective July 1, 2017.)
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency. Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040. AMENDATORY SECTION (Amending WSR 13-23-087, filed 11/19/13, effective 4/1/14)
WAC 51-50-0908 Section 908—((Emergency alarm systems)) Reserved.
(([F] 908.7 Carbon monoxide alarms. Group I or Group R occupancies shall be provided with single station carbon monoxide alarms installed outside of each separate sleeping area in the immediate vicinity of the bedrooms in dwelling units or sleeping units and on each level of the dwelling. The carbon monoxide alarms shall be listed as complying with UL 2034 and be installed and maintained in accordance with NFPA 720-2012 and the manufacturer's instructions.
908.7.1 Carbon monoxide detection systems. Carbon monoxide detection systems, that include carbon monoxide detectors and audible notification appliances, installed and maintained in accordance with this section for carbon monoxide alarms and NFPA 720-2012 shall be permitted. The carbon monoxide detectors shall be listed as complying with UL 2075.))
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency. AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-0909 Section 909—Smoke control systems.
909.21.12 Hoistway venting. Hoistway venting ((required by Section 3004)) need not be provided for pressurized elevator shafts.
909.21.13 Machine rooms. Elevator machine rooms shall be pressurized in accordance with this section unless separated from the hoistway shaft by construction in accordance with Section 707.
AMENDATORY SECTION (Amending WSR 10-03-097, filed 1/20/10, effective 7/1/10)
WAC 51-50-0911 Section 911—((Fire command center)) Reserved.
((911.1.2 Separation. The fire command center shall be separated from the remainder of the building by not less than a 2-hour fire barrier constructed in accordance with Section 707 or horizontal assembly constructed in accordance with Section 712, or both.))
NEW SECTION
WAC 51-50-0915 Section 915—Carbon monoxide detection.
915.1 General. Carbon monoxide detection shall be installed in new buildings in accordance with Sections 915.1.1 through 915.6. Carbon monoxide detection shall be installed in existing buildings in accordance with Chapter 11 of the International Fire Code.
915.1.1 Where required. Carbon monoxide detection shall be provided in Group I and R occupancies and in classrooms in Group E occupancies in the locations specified in Section 915.2 where any of the conditions in Sections 915.1.2 through 915.1.6 exist.
915.1.2 Fuel-burning appliances and fuel-burning fireplaces. Carbon monoxide detection shall be provided in dwelling units, sleeping units and classrooms that contain a fuel-burning appliance or a fuel-burning fireplace.
915.1.3 Forced-air furnaces. Carbon monoxide detection shall be provided in dwelling units, sleeping units and classrooms served by a fuel-burning, forced-air furnace.
915.1.4 Fuel-burning appliances outside of dwelling units, sleeping units and classrooms. Carbon monoxide detection shall be provided in dwelling units, sleeping units and classrooms located in buildings that contain fuel-burning appliances or fuel-burning fireplaces.
915.1.5 Private garages. Carbon monoxide detection shall be provided in dwelling units, sleeping units and classrooms in buildings with attached private garages.
915.1.6 Exempt garages. For determining compliance with Section 915.1.5, an open parking garage complying with Section 406.5 of the International Building Code or an enclosed parking garage complying with Section 406.6 of the International Building Code shall not be considered a private garage.
915.2 Locations. Where required by Section 915.1.1, carbon monoxide detection shall be installed in the locations specified in Sections 915.2.1 through 915.2.3.
915.2.1 Dwelling units. Carbon monoxide detection shall be installed in dwelling units outside of each separate sleeping area in the immediate vicinity of the bedrooms and on each level of the dwelling. Where a fuel-burning appliance or fuel-burning fireplace is located within a bedroom or its attached bathroom, carbon monoxide detection shall be installed within the bedroom.
915.2.2 Sleeping units. Carbon monoxide detection shall be installed in sleeping units.
915.2.3 Group E occupancies. When required by Section 915.1 in new buildings, or by Chapter 11 of the International Fire Code, carbon monoxide detection shall be installed in classrooms in Group E occupancies. Carbon monoxide alarm signals shall be automatically transmitted to an on-site location that is staffed by school personnel.
NEW SECTION
WAC 51-50-1004 Section 1004.
1004.2 Increased occupant load. The occupant load permitted in any building, or portion thereof, is permitted to be increased from that number established for the occupancies in Table 1004.1.2, provided that all other requirements of the code are also met based on such modified number and the occupant load does not exceed one occupant per 7 square feet (0.65 m2) of occupiable floor space. Where required by the building official, an approved aisle, seating or fixed equipment diagram substantiating any increase in occupant load shall be submitted. Where required by the building official, such diagram shall be posted. See WAC 170-295-0080 (1)(b) for day care licensed by the state of Washington.
NEW SECTION
WAC 51-50-1006 Section 1006—Number of exits and exit access doorways.
1006.2.2.6 Electrical equipment rooms. Rooms containing electrical equipment rated at 1,200 amperes or more where the equipment is over 6 feet (1829 mm) wide and containing overcurrent devices, switching devices or control devices shall be provided with the number of means of egress in accordance with NEC Article 110.26(c) in addition to the requirements of this code.
AMENDATORY SECTION (Amending WSR 10-03-097, filed 1/20/10, effective 7/1/10)
WAC 51-50-1007 Section 1007—((Accessible means of egress)) Reserved.
((1007.1 Accessible means of egress required. Accessible means of egress shall comply with this section. Accessible spaces shall be provided with not less than one accessible means of egress. Where more than one means of egress are required by Section 1015.1 or 1021.1 from any accessible space, each accessible portion of the space shall be served by not less than two accessible means of egress.
1007.8 Two-way communication. A two-way communication system shall be provided at the elevator landing on each accessible floor that is one or more stories above or below the story of exit discharge complying with Sections 1007.8.1 and 1007.8.2.
1007.8.1 System requirements. Two-way communication systems shall provide communication between each required location and the fire command center or a central control point location approved by the fire department. Where the central control point is not constantly attended, a two-way communication system shall have a timed automatic telephone dial-out capability to a monitoring location. The two-way communication system shall include both audible and visible signals. The two-way communication system shall have a battery backup or an approved alternate source of power that is capable of 90 minutes use upon failure of the normal power source.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1008 Section 1008—((Doors, gates and turnstiles)) Reserved.
((1008.1.9.3 Locks and latches. Locks and latches shall be permitted to prevent operation of doors where any of the following exists:
1. Places of detention or restraint.
2. In buildings in occupancy Group A having an occupant load of 300 or less, Groups B, F, M and S, and in places of religious worship, the main exterior door or doors are permitted to be equipped with key-operated locking devices from the egress side provided:
2.1. The locking device is readily distinguishable as locked;
2.2. A readily visible and durable sign is posted on the egress side on or adjacent to the door stating: THIS DOOR TO REMAIN UNLOCKED WHEN BUILDING IS OCCUPIED. The sign shall be in letters 1 inch (25 mm) high on a contrasting background; and
2.3. The use of the key-operated locking device is revocable by the building official for due cause.
3. Where egress doors are used in pairs, approved automatic flush bolts shall be permitted to be used, provided that the door leaf having the automatic flush bolts has no doorknob or surface-mounted hardware.
4. Doors from individual dwelling or sleeping units of Group R occupancies having an occupant load of 10 or less are permitted to be equipped with a night latch, dead bolt, or security chain, provided such devices are openable from the inside without the use of a key or a tool.
5. Fire doors after the minimum elevated temperature has disabled the unlatching mechanism in accordance with listed fire door test procedures.
6. Approved, listed locks without delayed egress shall be permitted in Group R-2 boarding homes licensed by Washington state, provided that:
6.1. The clinical needs of one or more patients require specialized security measures for their safety.
6.2. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
6.3. The doors unlock upon loss of electrical power controlling the lock or lock mechanism.
6.4. The lock shall be capable of being deactivated by a signal from a switch located in an approved location.
6.5. There is a system, such as a keypad and code, in place that allows visitors, staff persons and appropriate residents to exit. Instructions for exiting shall be posted within six feet of the door.
1008.1.9.6 Special locking arrangements in Group I-2. Approved special egress locks shall be permitted in a Group I-2 Occupancy where the clinical needs of persons receiving care require such locking. Special egress locks shall be permitted in such occupancies where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or an approved automatic smoke or heat detection system installed in accordance with Section 907, provided that the doors are installed and operate in accordance with Items 1 through 7.
1. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
2. The doors unlock upon loss of power controlling the lock or lock mechanism.
3. The door locks shall have the capability of being unlocked by a signal from the fire command center, a nursing station or other approved location.
4. A building occupant shall not be required to pass through more than one door equipped with a special egress lock before entering an exit.
5. The procedures for the operation(s) of the unlocking system shall be described and approved as part of the emergency planning and preparedness required by Chapter 4 of the International Fire Code.
6. There is a system, such as a keypad and code, in place that allows visitors, staff persons and appropriate residents to exit. Instructions for exiting shall be posted within six feet of the door.
7. Emergency lighting shall be provided at the door.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1009 Section 1009—((Stairways and handrails)) Accessible means of egress.
((1009.3 Exit access stairways. Floor openings between stories created by exit access stairways shall be enclosed.
1009.18 Stairways in individual dwelling units. Stairs or ladders within an individual dwelling unit used for access to areas of 200 square feet (18.6 m2) or less, and not containing the primary bathroom or kitchen, are exempt from the requirements of Section 1009.)) 1009.1 Accessible means of egress required. Accessible means of egress shall comply with this section. Accessible spaces shall be provided with not less than one accessible means of egress. Where more than one means of egress is required by Section 1006.2 or 1006.3 from any accessible space, each accessible portion of the space shall be served by not less than two accessible means of egress.
1009.8 Two-way communication. A two-way communication system complying with Sections 1009.8.1 and 1009.8.2 shall be provided at the landing serving each elevator or bank of elevators on each accessible floor that is one or more stories above or below the level of exit discharge.
1009.8.1 System requirements. Two-way communication systems shall provide communication between each required location and the fire command center or a central control point location approved by the fire department. Where the central control point is not a constantly attended location, a two-way communication system shall have a timed automatic telephone dial-out capability to a monitoring location. The two-way communication system shall include both audible and visible signals. The two-way communication system shall have a battery backup or an approved alternate source of power that is capable of 90 minutes use upon failure of the normal power source.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-10100 Section 1010—((Ramps)) Doors, gates, and turnstiles.
((1010.1 Scope. The provisions of this section shall apply to ramps used as a component of a means of egress.
1010.1.9.3 Locks and latches. Locks and latches shall be permitted to prevent operation of doors where any of the following exists:
1. Places of detention or restraint.
2. In buildings in occupancy Group A having an occupant load of 300 or less, Groups B, F, M and S, and in places of religious worship, the main exterior door or doors are permitted to be equipped with key-operated locking devices from the egress side, provided:
2.1. The locking device is readily distinguishable as locked;
2.2. A readily visible and durable sign is posted on the egress side on or adjacent to the door stating: THIS DOOR TO REMAIN UNLOCKED WHEN BUILDING IS OCCUPIED. The sign shall be in letters 1 inch (25 mm) high on a contrasting background; and
2.3. The use of the key-operated locking device is revocable by the building official for due cause.
3. Where egress doors are used in pairs, approved automatic flush bolts shall be permitted to be used, provided that the door leaf having the automatic flush bolts has no doorknob or surface-mounted hardware.
4. Doors from individual dwelling or sleeping units of Group R occupancies having an occupant load of 10 or less are permitted to be equipped with a night latch, dead bolt, or security chain, provided such devices are openable from the inside without the use of a key or a tool.
5. Fire doors after the minimum elevated temperature has disabled the unlatching mechanism in accordance with listed fire door test procedures.
6. Approved, listed locks without delayed egress shall be permitted in Group R-2 assisted living facilities licensed by the state of Washington, provided that:
6.1. The clinical needs of one or more patients require specialized security measures for their safety.
6.2. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
6.3. The doors unlock upon loss of electrical power controlling the lock or lock mechanism.
6.4. The lock shall be capable of being deactivated by a signal from a switch located in an approved location.
6.5. There is a system, such as a keypad and code, in place that allows visitors, staff persons and appropriate residents to exit. Instructions for exiting shall be posted within six feet of the door.
1010.1.9.6 Special locking arrangements in Group I-2. Approved special egress locks shall be permitted in a Group I-2 occupancy where the clinical needs of persons receiving care require such locking. Special egress locks shall be permitted in such occupancies where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or an approved automatic smoke or heat detection system installed in accordance with Section 907, provided that the doors unlock in accordance with Items 1 through 7.
1. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
2. The doors unlock upon loss of power controlling the lock or lock mechanism.
3. The door locks shall have the capability of being unlocked by a signal from the fire command center, a nursing station or other approved location.
4. A building occupant shall not be required to pass through more than one door equipped with a special egress lock before entering an exit.
5. The procedures for the operation(s) of the unlocking system shall be described and approved as part of the emergency planning and preparedness required by Chapter 4 of the International Fire Code.
6. There is a system, such as a keypad and code, in place that allows visitors, staff persons and appropriate residents to exit. Instructions for exiting shall be posted within six feet of the door.
7. Emergency lighting shall be provided at the door.
NEW SECTION
WAC 51-50-1011 Section 1011—Stairways.
1011.17 Stairways in individual dwelling units. Stairs or ladders within an individual dwelling unit used for access to areas of 200 square feet (18.6 m2) or less, and not containing the primary bathroom or kitchen, are exempt from the requirements of Section 1009.
NEW SECTION
WAC 51-50-1012 Section 1012—Ramps.
1012.1 Scope. The provisions of this section shall apply to ramps used as a component of a means of egress.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1018 Section 1018—((Corridors)) Reserved.
((1018.5 Air movement in corridors. Corridors shall not serve as supply, return, exhaust, relief or ventilation air ducts.
1018.6 Corridor continuity. Fire-resistance-rated corridors shall be continuous from the point of entry to an exit, and shall not be interrupted by intervening rooms. Where the path of egress travel within a fire-resistance-rated corridor to the exit includes travel along unenclosed exit access stairways or ramps, the fire resistance-rating shall be continuous for the length of the stairway or ramp and for the length of the connecting corridor on the adjacent floor leading to the exit.
NEW SECTION
WAC 51-50-1020 Section 1020—Corridors.
1020.5 Air movement in corridors. Corridors shall not serve as supply, return, exhaust, relief, or ventilation air ducts.
NEW SECTION
WAC 51-50-1028 Section 1028—Exit discharge.
1028.4.1 Width or capacity. The required capacity of egress courts shall be determined as specified in Section 1005.1, but the minimum width shall be not less than 44 inches (1,118 mm), except as specified herein. Egress courts serving Group R-3 and U occupancies shall be not less than 36 inches (914 mm) in width. The required capacity and width of egress courts shall be unobstructed to a height of 7 feet (2,134 mm).
NEW SECTION
WAC 51-50-1030 Emergency escape and rescue.
1030.1 General. In addition to the means of egress required by this chapter, provisions shall be made to emergency escape and rescue openings in Group R-2 occupancies in accordance with Tables 1006.3.2(1) and (2) and Group R-3 occupancies. Basements and sleeping rooms below the fourth story above grade plane shall have at least one exterior emergency escape and rescue opening in accordance with this section. Where basements contain one or more sleeping rooms, emergency escape and rescue openings shall be required in each sleeping room, but shall not be required in adjoining areas of the basement. Such openings shall open directly into a public way or to a yard or court that opens to a public way.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1101 Section 1101—General.
1101.2 Design. Buildings and facilities shall be designed and constructed to be accessible in accordance with this code and ICC A117.1, except those portions of ICC A117.1 amended by this section.
1101.2.2 (ICC A117.1 Section 403.5) Clear width of accessible route. Clear width of an accessible route shall comply with ICC A117.1 Section 403.5. For exterior routes of travel, the minimum clear width shall be 44 inches (1118 mm).
1101.2.3 (ICC A117.1 Section 404.2.8) Door-opening force. Fire doors shall have the minimum opening force allowable by the appropriate administrative authority. The force for pushing or pulling open doors other than fire doors shall be as follows:
1. Interior hinged door: 5.0 pounds (22.2 N) maximum
2. Interior sliding or folding doors: 5.0 pounds (22.2 N) maximum
3. Exterior hinged, sliding or folding door: 10 pounds (44.4 N) maximum.
These forces do not apply to the force required to retract latch bolts or disengage other devices that hold the door in a closed position.
1101.2.4 (ICC A117.1 Section 407.4.6.2.2) Arrangement of elevator car buttons. ((This section is not adopted.)) Buttons shall be arranged with numbers in ascending order. When two or more columns of buttons are provided they shall read from left to right.
1101.2.7 (ICC ANSI A117.1 606.7) Operable parts. Operable parts on drying equipment, towel or cleansing product dispensers, and disposal fixtures shall comply with Table 603.6.
1101.2.8 (ICC A117.1 Section 604.6) Flush controls. Flush controls shall be hand operated or automatic. Hand operated flush controls shall comply with Section 309, except the maximum height above the floor shall be 44 inches. Flush controls shall be located on the open side of the water closet.
1101.2.9 (ICC A117.1 Section 703.6.3.1) International Symbol of Accessibility. Where the International Symbol of Accessibility is required, it shall be proportioned complying with ICC A117.1 Figure 703.6.3.1. All interior and exterior signs depicting the International Symbol of Accessibility shall be white on a blue background.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1107 Section 1107—Dwelling units and sleeping units.
1107.6 Group R. Accessible units, Type A units and Type B units shall be provided in Group R Occupancies in accordance with Sections 1107.6.1 through 1107.6.4. Accessible and Type A units shall be apportioned among efficiency dwelling units, single bedroom units and multiple bedroom units, in proportion to the numbers of such units in the building.
((1107.6.2.1.1)) 1107.6.2.2.1 Type A units. In Group R-2 Occupancies containing more than 10 dwelling units or sleeping units, at least 5 percent, but not less than one, of the units shall be a Type A unit. All units on a site shall be considered to determine the total number of units and the required number of Type A units. Type A units shall be dispersed among the various classes of units, as described in Section 1107.6. Bedrooms in monasteries and convents shall be counted as sleeping units for the purpose of determining the number of units. Where the sleeping units are grouped into suites, only one sleeping unit in each suite shall count towards the number of required Type A units.
((1107.6.2.2)) 1107.6.2.3 Group R-2 other than live/work units, apartment houses, monasteries and convents. In Group R-2 Occupancies, other than live/work units, apartment houses, monasteries and convents falling within the scope of Sections 1107.6.2.1 and 1107.6.2.2, accessible units and Type B units shall be provided in accordance with Sections ((1107.6.2.2.1 and 1107.6.2.2.2)) 1107.6.2.3.1 and 1107.6.2.3.2. Bedrooms within congregate living facilities shall be counted as sleeping units for the purpose of determining the number of units. Where the sleeping units are grouped into suites, only one sleeping unit in each suite shall be permitted to count towards the number of required accessible units. Accessible units shall be dispersed among the various classes of units, as described in Section 1107.6.
AMENDATORY SECTION (Amending WSR 14-24-055, filed 11/25/14, effective 5/1/15)
WAC 51-50-1203 Section 1203—Ventilation.
1203.1 General. Buildings shall be provided with natural ventilation in accordance with Section ((1203.4)) 1203.5, or mechanical ventilation in accordance with the International Mechanical Code. Ambulatory care facilities and Group I-2 occupancies shall be ventilated by mechanical means in accordance with Section 407 of the International Mechanical Code.
1203.2 Attic spaces. Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof framing members shall have cross ventilation for each separate space by ventilation openings protected against the entrance of rain and snow. Blocking and bridging shall be arranged so as not to interfere with the movement of air. An airspace of not less than 1 inch (25 mm) shall be provided between the insulation and the roof sheathing. The net free ventilating area shall not be less than 1/150th of the area of the space ventilated. Ventilators shall be installed in accordance with the manufacturer's installation instructions.
Table 1203.2.1
Insulation for Condensation Control
1203.3 Unvented attic and unvented enclosed rafter assemblies. Unvented attics and unvented enclosed roof framing assemblies created by ceilings applied directly to the underside of the roof framing members/rafters and the structural roof sheathing at the top of the roof framing members shall be permitted where all the following conditions are met:
1. The unvented attic space is completely within the building thermal envelope.
2. No interior-vapor retarders are installed on the ceiling side (attic floor) of the unvented attic assembly or on the ceiling side of the unvented enclosed roof framing assembly.
3. Where wood shingles or shakes are used, a minimum 1/4 inch (6.4 mm) vented airspace separates the shingles or shakes and the roofing underlayment above the structural sheathing.
4. In Climate Zone 5B, any air-impermeable insulation shall be a Class II vapor retarder or shall have a Class II vapor retarder coating or covering in direct contact with the underside of the insulation.
5. Insulation shall be located in accordance with the following:
5.1 Item 5.1.1, 5.1.2, 5.1.3 or 5.1.4 shall be met, depending on the air permeability of the insulation directly under the roof sheathing.
5.1.1 Where only air-impermeable insulation is provided, it shall be applied in direct contact with the underside of the structural roof sheathing.
5.1.2 Where air-permeable insulation is provided inside the building thermal envelope, it shall be installed in accordance with Item 5.1. In addition to the air-permeable insulation installed directly below the structural sheathing, rigid board or sheet insulation shall be installed directly above the structural roof sheathing in accordance with these R-values for condensation control:
i. Climate Zone #4C- R-10 minimum rigid board or air-impermeable insulation R-value.
ii. Climate Zone #5B- R-20 minimum rigid board or air-impermeable insulation R-value.
5.1.3 Where both air-impermeable and air-permeable insulation are provided, the air-impermeable insulation shall be applied in direct contact with the underside of the structural roof sheathing in accordance with Item 5.1.1 and shall be in accordance with these R-values for condensation control. The air-permeable insulation shall be installed directly under the air-impermeable insulation.
i. Climate Zone #4C- R-10 minimum rigid board or air-impermeable insulation R-value.
ii. Climate Zone #5B- R-20 minimum rigid board or air-impermeable insulation R-value.
5.1.4 Alternatively, sufficient rigid board or sheet insulation shall be installed directly above the structural roof sheathing to maintain the monthly average temperature of the underside of the structural roof sheathing above 45 degrees F. For calculation purposes, an interior air temperature of 68 degrees F is assumed and the exterior air temperature is assumed to be the monthly average outside air temperature of the three coldest months.
5.2 Where preformed insulation board is used as the air-permeable insulation layer, it shall be sealed at the perimeter of each individual sheet interior surface to form a continuous layer.
((1203.3)) 1203.4 Under-floor ventilation. The space between the bottom of the floor joists and the earth under any building except spaces occupied by basements or cellars shall be provided with ventilation openings through foundation walls or exterior walls. Such openings shall be placed so as to provide cross ventilation of the under-floor space. A ground cover of six mil (0.006 inch thick) black polyethylene or approved equal shall be laid over the ground within crawl spaces. The ground cover shall be overlapped six inches minimum at the joints and shall extend to the foundation wall.
((1203.4)) 1203.5 Natural ventilation. For other than Group R Occupancies, natural ventilation of an occupied space shall be through windows, doors, louvers or other openings to the outdoors. The operating mechanism for such openings shall be provided with ready access so that the openings are readily controllable by the building occupants. Group R Occupancies shall comply with the International Mechanical Code.
1203.6 Radon resistive construction standards. The criteria of this section establishes minimum radon resistive construction requirements for Group R Occupancies.
1203.6.1 Application. The requirements of Section 1203.6 shall be adopted and enforced by all jurisdictions of the state according to the following subsections.
1203.6.1.1 All jurisdictions of the state shall comply with Section 1203.6.2.
1203.6.1.2 Clark, Ferry, Okanogan, Pend Oreille, Skamania, Spokane, and Stevens counties shall also comply with Section 1203.6.3.
1203.6.2 State wide radon requirements.
1203.6.2.1 Crawlspaces. All crawlspaces shall comply with the requirements of this section.
1203.6.2.2 Ventilation. All crawlspaces shall be ventilated as specified in Section 1203.3.
If the installed ventilation in a crawlspace is less than one square foot for each 300 square feet of crawlspace area, or if the crawlspace vents are equipped with operable louvers, a radon vent shall be installed to originate from a point between the ground cover and soil. The radon vent shall be installed in accordance with Sections 1203.6.3.2.6 and 1203.6.3.2.7.
1203.6.2.3 Crawlspace plenum systems. In crawlspace plenum systems used for providing supply air for an HVAC system, aggregate, a permanently sealed soil gas retarder membrane and a radon vent pipe shall be installed in accordance with Section 1203.6.3.2. Crawlspaces shall not be used for return air plenums.
In addition, an operable radon vent fan shall be installed and activated. The fan shall be located as specified in Section 1203.6.3.2.7. The fan shall be capable of providing at least 100 cfm at 1-inch water column static pressure. The fan shall be controlled by a readily accessible manual switch. The switch shall be labeled "RADON VENT FAN."
1203.6.3 Radon prescriptive requirements.
1203.6.3.1 Scope. This section applies to those counties specified in Section 1203.6.1.2. This section establishes prescriptive construction requirements for reducing the potential for radon entry into all Group R Occupancies, and for preparing the building for future mitigation if desired.
In all crawlspaces, except crawlspace plenums used for providing supply air for an HVAC system, a continuous air barrier shall be installed between the crawlspace area and the occupied area to limit air transport between the areas. If a wood sheet subfloor or other material is utilized as an air barrier, in addition to the requirements of Section 502.1.6.2 of the Washington State Energy Code, all joints between sheets shall be sealed.
1203.6.3.2 Floors in contact with the earth.
1203.6.3.2.1 General. Concrete slabs that are in direct contact with the building envelope shall comply with the requirements of this section.
1203.6.3.2.2 Aggregate. A layer of aggregate of 4-inch minimum thickness shall be placed beneath concrete slabs. The aggregate shall be continuous to the extent practical.
1203.6.3.2.3 Gradation. Aggregate shall:
1. Comply with ASTM Standard C-33 Standard Specification for Concrete Aggregate and shall be size No. 8 or larger size aggregate as listed in Table 2, Grading Requirements for Course Aggregate; or
2. Meet the 1988 Washington State Department of Transportation Specification 9-03.1 (3) "Coarse Aggregate for Portland Cement Concrete," or any equivalent successor standards. Aggregate size shall be of Grade 8 or larger as listed in Section 9-03.1 (3) C, "Grading"; or
3. Be screened, washed pea gravel free of deleterious substances in a manner consistent with ASTM Standard C-33 with 100 percent passing a 1/2-inch sieve and less than 5 percent passing a No. 16 sieve. Sieve characteristics shall conform to those acceptable under ASTM Standard C-33.
1203.6.3.2.4 Soil-gas retarder membrane. A soil-gas retarder membrane, consisting of at least one layer of virgin polyethylene with a thickness of at least 6 mil, or equivalent flexible sheet material, shall be either placed directly under all concrete slabs so that the slab is in direct contact with the membrane, or on top of the aggregate with 2 inches minimum of fine sand or pea gravel installed between the concrete slab and membrane. The flexible sheet shall extend to the foundation wall or to the outside edge of the monolithic slab. Seams shall overlap at least 12 inches. The membrane shall also be fitted tightly to all pipes, wires, and other penetrations of the membrane and sealed with an approved sealant or tape. All punctures or tears shall be repaired with the same or approved material and similarly lapped and sealed.
1203.6.3.2.5 Sealing of penetrations and joints. All penetrations and joints in concrete slabs or other floor systems and walls below grade shall be sealed by an approved sealant to create an air barrier to limit the movement of soil-gas into the indoor air.
Sealants shall be approved by the manufacturer for the intended purpose. Sealant joints shall conform to manufacturer's specifications. The sealant shall be placed and tooled in accordance with manufacturer's specifications. There shall be no gaps or voids after the sealant has cured.
1203.6.3.2.6 Radon vent. One continuous sealed pipe shall run from a point within the aggregate under each concrete slab to a point outside the building. Joints and connections shall be permanently gas tight. The continuous sealed pipe shall interface with the aggregate in the following manner, or by other approved equal method. The pipe shall be permanently connected to a "T" within the aggregate area so that the two end openings of the "T" lie within the aggregate area. A minimum of 5 feet of perforated drain pipe of 3 inches minimum diameter shall join to and extend from the "T." The perforated pipe shall remain in the aggregate area and shall not be capped at the ends. The "T" and its perforated pipe extensions shall be located at least 5 feet horizontally from the exterior perimeter of the aggregate area.
The continuous sealed pipe shall terminate no less than 12 inches above the eave, and more than 10 horizontal feet from a woodstove or fireplace chimney, or operable window. The continuous sealed pipe shall be labeled "radon vent." The label shall be placed so as to remain visible to an occupant.
The minimum pipe diameter shall be 3 inches unless otherwise approved. Acceptable sealed plastic pipe shall be smooth walled, and may include either PVC schedule 40 or ABS schedule of equivalent wall thickness.
The entire sealed pipe system shall be sloped to drain to the subslab aggregate.
The sealed pipe system may pass through an unconditioned attic before exiting the building; but to the extent practicable, the sealed pipe shall be located inside the thermal envelope of the building in order to enhance passive stack venting.
If the subslab depressurization system is exhausted through the concrete foundation wall or rim joist, the exhaust terminus shall be a minimum of 6 feet from operable windows or outdoor air intake vents and shall be directed away from operable windows and outdoor air intake vents to prevent radon reentrainment.
1203.6.3.2.7 Fan circuit and wiring and location. An area for location of an in-line fan shall be provided. The location shall be as close as practicable to the radon vent pipe's point of exit from the building, or shall be outside the building shell; and shall be located so that the fan and all downstream piping is isolated from the indoor air.
Provisions shall be made to allow future activation of an in-line fan on the radon vent pipe without the need to place new wiring. A 110 volt power supply shall be provided at a junction box near the fan location.
1203.6.3.2.8 Separate aggregate areas. If the 4-inch aggregate area underneath the concrete slab is not continuous, but is separated into distinct isolated aggregate areas by a footing or other barrier, a minimum of one radon vent pipe shall be installed into each separate aggregate area.
1203.6.3.2.9 Concrete block walls. Concrete block walls connected to below grade areas shall be considered unsealed surfaces. All openings in concrete block walls that will not remain accessible upon completion of the building shall be sealed at both vertical and horizontal surfaces, in order to create a continuous air barrier to limit the transport of soil-gas into the indoor air.
1203.7 Other ventilation and exhaust systems. Ventilation and exhaust systems for occupancies and operations involving flammable or combustible hazards or other contaminant sources as covered in the International Mechanical Code or the International Fire Code shall be provided as required by both codes.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1204 Section 1204—Temperature control.
1204.1 Equipment and systems. Interior spaces intended for human occupancy shall be provided with active or passive space-heating systems capable of maintaining ((a minimum)) an indoor temperature of not less than 68°F (20°C) at a point 3 feet (914 mm) above the floor on the design heating day.
1204.2.1 Definitions. For the purposes of this section only, the following definitions apply.
DESIGNATED AREAS are those areas designated by a county to be an urban growth area in chapter 36.70A RCW and those areas designated by the U.S. Environmental Protection Agency as being in nonattainment for particulate matter.
SUBSTANTIALLY REMODELED means any alteration or restoration of a building exceeding 60 percent of the appraised value of such building within a 12-month period. For the purpose of this section, the appraised value is the estimated cost to replace the building and structure in-kind, based on current replacement costs.
1204.2.2 Primary heating source. Primary heating sources in all new and substantially remodeled buildings in designated areas shall not be dependent upon wood stoves.
1204.2.3 Solid fuel burning devices. No new or used solid fuel burning device shall be installed in new or existing buildings unless such device is United States Environmental Protection Agency certified or exempt from certification by the United States Environmental Protection Agency and conforms with RCW 70.94.011, 70.94.450, 70.94.453 and 70.94.457.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1208 Section 1208—Interior space dimensions.
((1208.2 Minimum ceiling heights. Occupiable spaces and habitable spaces shall have a ceiling height of not less than 7 feet 6 inches (2286 mm). Bathrooms, toilet rooms, kitchen, storage rooms and laundry rooms shall be permitted to have a ceiling height of not less than 7 feet (2134 mm).
1208.3 Room area. Every dwelling unit shall have no fewer than one room that shall have not less than 120 square feet (13.9 m2) of net floor area. Other habitable rooms shall have a net floor area of not less than 70 square feet (6.5 m2).
Portions of a room with a sloped ceiling measuring less than 5 feet (1524 mm) or a flat ceiling measuring less than 7 feet (2134 mm) from the finished floor to the finished ceiling shall not be considered as contributing to the minimum habitable area for that room.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1210 Section 1210—((Toilet and bathroom requirements)) Reserved.
((1210.4 Toilet rooms. This section is not adopted.
(The requirements of this section have been moved to Section 2902.3.1.1)))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1403 Section 1403—Performance requirements.
1403.2 Weather protection. Exterior walls shall provide the building with a weather-resistant exterior wall envelope. The exterior wall envelope shall include flashing as described in Section 1405.4. The exterior wall envelope shall be designed and constructed in such a manner as to prevent the accumulation of water within the wall assembly by providing a water-resistant barrier behind the exterior veneer, as described in Section 1404.2, and a means for draining water that enters the assembly to the exterior. An air space cavity is not required under the exterior cladding for an exterior wall clad with lapped or panel siding made of plywood, engineered wood, hardboard, or fiber cement. Protection against condensation in the exterior wall assembly shall be provided in accordance with Section 1405.3.
((1403.5 Vertical and lateral flame propagation. Exterior walls on buildings of Type I, II, III, or IV construction that are greater than 40 feet (12,192 mm) in height above grade plane and contain a combustible water-resistive barrier shall be tested in accordance with and comply with the acceptance criteria of NFPA 285.
AMENDATORY SECTION (Amending WSR 10-03-097, filed 1/20/10, effective 7/1/10)
WAC 51-50-1607 ((Reserved.)) Section 1607—Live loads.
Table 1607.1
Minimum Uniformly Distributed Live Loads, L0, And
Minimum Concentrated Live Loadsg
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1702 Section 1702—Definitions.
1702.1 Definitions. The following terms are defined in Chapter 2: (((add terms from 2012 IBC pg 379)))
Approved agency
Approved fabricator
Certificate of compliance
Designated seismic system
Fabricated item
Intumescent fire-resistant coatings
Main wind-force resisting system
Mastic fire-resistant coatings
SMALL BUSINESS.
Special inspection
1. Continuous special inspection
2. Periodic special inspection
Special inspector
Sprayed fire-resistant materials
Structural observation
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1705 ((Required verification and inspection.)) Reserved.
((Modify Table 1705.3. Remainder of Table 1705.3 remains as published in the 2012 IBC.
Table 1705.3
Required Verification and Inspection of Concrete Construction
NEW SECTION
WAC 51-50-1708 Preconstruction load tests.
1708.5 Exterior window and door assemblies. The design pressure rating of exterior windows and doors in buildings shall be determined in accordance with Section 1709.5.1 or 1709.5.2. For the purposes of this section, the required design pressure shall be determined using the allowable stress design load combinations of Section 1605.3.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1710 Section 1710—((Preconstruction load tests)) Reserved.
((1710.5 Exterior window and door assemblies. The design pressure rating of exterior windows and doors in buildings shall be determined in accordance with Section 1710.5.1 or 1710.5.2.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1901 Section 1901—((General)) Reserved.
((1901.2.1 Anchoring to concrete. Anchoring to concrete shall be in accordance with ACI 318 as amended in Section 1905, and applies to cast-in (headed bolts, headed studs, and hooked J-or L-bolts) anchors and post-installed expansion (torque-controlled and displacement-controlled), undercut, and adhesive anchors.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1903 Section 1903—((Specifications for tests and materials)) Reserved.
((1903.1 General. Materials used to produce concrete, concrete itself and testing thereof shall comply with the applicable standards listed in ACI 318 where required, special inspections and tests shall be in accordance with Chapter 17.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1904 Section 1904—((Durability requirements)) Reserved.
((1904.1 Structural concrete. Structural concrete shall conform to the durability requirements of ACI 318.
1904.2 Nonstructural concrete. The registered design professional shall assign nonstructural concrete a freeze-thaw exposure class, as defined in ACI 318, based on the anticipated exposure of nonstructural concrete. Nonstructural concrete shall have a minimum specified compressive strength, f'c, of 2500 psi for Class F0; 3000 psi for Class F1; and 3500 psi for Classes F2 and F3. Nonstructural concrete shall be air entrained in accordance with ACI 318.))
AMENDATORY SECTION (Amending WSR 13-20-119, filed 10/1/13, effective 11/1/13)
WAC 51-50-1905 Section 1905—((Modifications to ACI 318)) Reserved.
((1905.1 General. The text of ACI 318 shall be modified as indicated in Sections 1905.1.1 through 1905.1.10.
.WALL PIER This definition is not adopted.
(Other definition remains unchanged)
1905.1.3 ACI 318, Section 21.4. Modify ACI 318, Section 21.4, by adding new Section 21.4.3 and renumbering existing Section 21.4.3 to become 21.4.4.
21.4.3 - Connections that are designed to yield shall be capable of maintaining 80 percent of their design strength at the deformation induced by the design displacement or shall use Type 2 mechanical splices.
21.4.4 - Elements of the connection that are not designed to yield shall develop at least 1.5 Sy.
1905.1.4 ACI 318, Section 21.9. This section is not adopted.
1905.1.9 ACI 318, Section D.3.3.
Modify ACI 318 Sections D.3.3.4.2, D.3.3.4.3(d) and D.3.3.5.2 to read as follows:
D.3.3.4.2 - Where the tensile component of the strength-level earthquake force applied to anchors exceeds 20 percent of the total factored anchor tensile force associated with the same load combination, anchors and their attachments shall be designed in accordance with D.3.3.4.3. The anchor design tensile strength shall be determined in accordance with D.3.3.4.4.
D.3.3.4.3(d) – The anchor or group of anchors shall be designed for the maximum tension obtained from design load combinations that include E, with E increased by Ω0. The anchor design tensile strength shall be calculated from D.3.3.4.4.
D.3.3.5.2 - Where the shear component of the strength-level earthquake force applied to anchors exceeds 20 percent of the total factored anchor shear force associated with the same load combination, anchors and their attachments shall be designed in accordance with D.3.3.5.3. The anchor design shear strength for resisting earthquake forces shall be determined in accordance with D.6.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1908 Section 1908—((Anchorage to concrete—Allowable stress design)) Reserved.
((This section is not adopted.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-1909 Section 1909—((Anchorage to concrete—Strength design)) Reserved.
((This section is not adopted.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-21070 Section 2107—Allowable stress design.
2107.1 General. The design of masonry structures using allowable stress design shall comply with Sections 2106((, 2107.2)) and the requirements of Chapters 1 ((and 2)) through 8 of TMS 402/ACI 530/ASCE 5 except as modified by Sections 2107.2 through 2107.5.
((2107.2 TMS 402/ACI 530/ASCE 5, Section 2.1.8.7.1.1, lap splices. In lieu of Section 2.1.8.7.1.1, it shall be permitted to design lap splices in accordance with Section 2107.2.1.
2107.2.1 Lap splices. The minimum length of lap splices for reinforcing bars in tension or compression, ld, shall be ld = 0.002db fs (Equation 21-1)
but not less than 12 inches (305 mm). In no case shall the length of the lapped splice be less than 40 bar diameters.
In regions of moment where the design tensile stresses in the reinforcement are greater than 80 percent of the allowable steel tension stress, Fs, the lap length of splices shall be increased not less than 50 percent of the minimum required length, but need not be greater than 72db. Other equivalent means of stress transfer to accomplish the same 50 percent increase shall be permitted. Where epoxy coated bars are used, lap length shall be increased by 50 percent.))
2107.5 TMS 402/ACI 530/ASCE 5. Modify Section ((2.3.4)) 8.3.4 Axial compression and flexure, as follows:
((2.3.4.2.1)) 8.3.4.2.1 The compressive force in reinforced masonry due to axial load only shall be permitted to not exceed that given by Equation ((2-21)) 2107.5-1 or Equation ((2-22)) 2107.5-2.
(a) For members having an h/r ratio not greater than 99:
(b) For members having an h/r ratio not greater than 99:
Reviser's note: RCW 34.05.395 requires the use of underlining and deletion marks to indicate amendments to existing rules, and deems ineffectual changes not filed by the agency in this manner. The bracketed material in the above section does not appear to conform to the statutory requirement. Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040. AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-2111 Section 2111—Masonry fireplaces.
((2111.7)) 2111.8 Fireplaces. Fireplaces shall be provided with each of the following:
1. Tightly fitting flue dampers, operated by a readily accessible manual or approved automatic control.
2. An outside source for combustion air ducted into the firebox. The duct shall be at least 6 square inches, and shall be provided with an operable outside air duct damper.
3. Site built fireplaces shall have tight fitting glass or metal doors, or a flue draft induction fan or as approved for minimizing back-drafting. Factory built fireplaces shall use doors listed for the installed appliance.
((2111.7.1)) 2111.8.1 Lintel and throat. Masonry over a fireplace opening shall be supported by a lintel of noncombustible material. The minimum required bearing length on each end of the fireplace opening shall be 4 inches (102 mm). The fireplace throat or damper shall be located a minimum of 8 inches (203 mm) above the top of the fireplace opening.
NEW SECTION
WAC 51-50-2407 Section 2407—Glass in handrails and guards.
2407.1.1 Loads. The panels and their support system shall be designed to withstand the loads specified in Section 1607.8, using a factor of safety of four.
2407.1.2 Structural glass baluster panels. Guards with structural glass baluster panels shall be installed with an attached top rail or handrail. The top rail or handrail shall be supported by a minimum of three glass baluster panels, or shall be otherwise supported to remain in place should one glass baluster panel fail.
NEW SECTION
WAC 51-50-2603 Section 2603—Foam plastic insulation.
2603.10 Wind resistance. Foam plastic insulation complying with ASTM C 578 or ASTM C 1289 and used as exterior wall sheathing on framed wall assemblies shall comply with ANSI/FS 100 for wind pressure resistance.
AMENDATORY SECTION (Amending WSR 14-24-087, filed 12/1/14, effective 5/1/15)
WAC 51-50-2900 Chapter 29—Plumbing systems.
SECTION 2901—GENERAL.
2901.1 Scope. The provisions of this chapter and the state plumbing code shall govern the erection, installation, alteration, repairs, relocation, replacement, addition to, use or maintenance of plumbing equipment and systems. Toilet and bathing rooms shall be constructed in accordance with Section 1210. Plumbing systems and equipment shall be constructed, installed and maintained in accordance with the state plumbing code.
2901.2 Health codes. In food preparation, serving and related storage areas, additional fixture requirements may be dictated by health codes.
SECTION 2902—MINIMUM PLUMBING FACILITIES.
2902.1 Minimum number of fixtures. Plumbing fixtures shall be provided ((for the type of occupancy and)) in the minimum number shown in Table 2902.1. ((Types of occupancies)) Uses not shown in Table 2902.1 shall be determined individually by the building official based on the occupancy which most nearly resembles the proposed occupancy. The number of occupants shall be determined by this code. ((Occupancy classification shall be determined in accordance with Chapter 3.)) Plumbing fixtures need not be provided for unoccupied buildings or facilities.
2902.1.1 Fixture calculations. To determine the occupant load of each sex, the total occupant load shall be divided in half. To determine the required number of fixtures, the fixture ratio or ratios for each fixture type shall be applied to the occupant load of each sex in accordance with Table 2902.1. Fractional numbers resulting from applying the fixture ratios of Table 2902.1 shall be rounded up to the next whole number. For calculations involving multiple occupancies, such fractional numbers for each occupancy shall first be summed and then rounded up to the next whole number.
2902.1.1.1 Private offices. Fixtures only accessible to private offices shall not be counted to determine compliance with this section.
2902.1.1.2 Urinals. Where urinals are provided, one water closet less than the number specified may be provided for each urinal installed, except the number of water closets in such cases shall not be reduced to less than one quarter (25%) of the minimum specified. For men's facilities serving 26 or more persons, not less than one urinal shall be provided.
2902.1.2 Family or assisted-use toilet and bath fixtures. Fixtures located within family or assisted-use toilet and bathing rooms required by Section 1109.2.1 are permitted to be included in the number of required fixtures for either the male or female occupants in assembly and mercantile occupancies.
2902.2 Separate facilities. Where plumbing fixtures are required, separate facilities shall be provided for each sex.
2902.2.1 Family or assisted-use toilet facilities serving as separate facilities. Where a building or tenant space requires a separate toilet facility for each sex and each toilet facility is required to have only one water closet, two family((/)) or assisted-use toilet facilities shall be permitted to serve as the required separate facilities. Family or assisted-use toilet facilities shall not be required to be identified for exclusive use by either sex as required by Section 2902.4.
2902.3 Employee and public toilet facilities. Customers, patrons and visitors shall be provided with public toilet facilities in structures and tenant spaces intended for public utilization. The number of plumbing fixtures located within the required toilet facilities shall be provided in accordance with Section 2902.1 for all users. Employees shall be provided with toilet facilities in all occupancies. Employee toilet facilities shall either be separate or combined employee and public toilet facilities.
2902.3.1 Access. The route to the public toilet facilities required by Section 2902.3 shall not pass through kitchens, food preparation areas, unpackaged food storage areas, storage rooms or closets. Access to the required facilities shall be from within the building or from the exterior of the building. Access to toilets serving multiple tenants shall be through a common use area and not through an area controlled by a tenant. All routes shall comply with the accessibility requirements of this code. The public shall have access to the required toilet facilities at all times that the building is occupied. For other requirements for plumbing facilities, see Chapter 11.
((2902.3.1.1 Food preparation areas. Toilet rooms shall not open directly into a room used for the preparation of food for service to the public or residents of Group R-2 boarding homes and residential treatment facilities licensed by Washington state.))
2902.3.2 Location of toilet facilities in occupancies other than malls. In occupancies other than covered and open mall buildings, the required public and employee toilet facilities shall be located in each building not more than one story above or below the space required to be provided with toilet facilities, or conveniently in a building adjacent thereto on the same property, and the path of travel to such facilities shall not exceed a distance of 500 feet (152 m).
2902.3.3 Location of toilet facilities in malls. In covered and open mall buildings, the required public and employee toilet facilities shall be located not more than one story above or below the space required to be provided with toilet facilities, and the path of travel to such facilities shall not exceed a distance of 300 feet (91,440 mm). In mall buildings, the required facilities shall be based on total square footage (m2) within a covered mall building or within the perimeter line of an open mall building, and facilities shall be installed in each individual store or in a central toilet area located in accordance with this section. The maximum ((travel)) distance of travel to central toilet facilities in mall buildings shall be measured from the main entrance of any store or tenant space. In mall buildings, where employees' toilet facilities are not provided in the individual store, the maximum ((travel)) distance of travel shall be measured from the employees' work area of the store or tenant space.
2902.3.4 Pay facilities. Where pay facilities are installed, such facilities shall be in excess of the required minimum facilities. Required facilities shall be free of charge.
2902.3.5 Door locking. Where a toilet room is provided for the use of multiple occupants, the egress door for the room shall not be lockable from the inside of the room. This section does not apply to family or assisted-use toilet rooms.
2902.3.6 Prohibited toilet room location. Toilet rooms shall not open directly into a room used for the preparation of food for service to the public.
2902.4 Signage. Required public facilities shall be ((designated by a legible sign for each sex)) provided with signs that designate the sex as required by Section 2902.2. Signs shall be readily visible and located near the entrance to each toilet facility. Signs for accessible toilet facilities shall comply with Section ((1110)) 1111.
2902.4.1 Directional signage. Directional signage indicating the route to the public toilet facilities shall be posted in ((accordance with Section 3107. Such signage shall be located in a corridor or aisle, at the entrance to the facilities for customers and visitors)) a lobby, corridor, aisle or similar space, such that the sign can be readily seen from the main entrance to the building or tenant space.
2902.5 Drinking fountain location. Drinking fountains shall not be required to be located in individual tenant spaces provided that public drinking fountains are located within a ((travel)) distance of travel of 500 feet of the most remote location in the tenant space and not more than one story above or below the tenant space. Where the tenant space is in a covered or open mall, such distance shall not exceed 300 feet. Drinking fountains shall be located on an accessible route. Drinking fountains shall not be located in toilet rooms.
2902.5.1 Drinking fountain number. Occupant loads over 30 shall have one drinking fountain for the first 150 occupants, then one per each additional 500 occupants.
2902.5.2 Multistory buildings. Drinking fountains shall be provided on each floor having more than 30 occupants in schools, dormitories, auditoriums, theaters, offices and public buildings.
2902.5.3 Penal institutions. Penal institutions shall have one drinking fountain on each cell block floor and one on each exercise floor.
2902.5.4 Bottle filling stations. In Group E occupancies with occupant load over 30, a minimum of one bottle filling station shall be provided on each floor. This bottle filling station may be integral to a drinking fountain. In all occupancies that require two drinking fountains, bottle filling stations shall be permitted to be substituted for drinking fountains up to 50 percent of the requirements for drinking fountains. At least one of the required bottle filling stations must be located in accordance with Section 309 ANSI A117.1.
2902.6 Dwelling units. Dwelling units shall be provided with a kitchen sink.
2902.7 Water closet space requirements. The water closet stool in all occupancies shall be located in a clear space not less than 30 inches (762 mm) in width, with a clear space in front of the stool of not less than 24 inches (610 mm).
2902.8 Water. Each required sink, lavatory, bathtub and shower stall shall be equipped with hot and cold running water necessary for its normal operation.
2902.9 Small occupancies. Drinking fountains shall not be required for an occupant load of 15 or fewer.
SECTION 2903—RESERVED.
SECTION 2904—RESERVED.
Table 2902.1
Minimum Number of Required Plumbing Fixturesa
(See Sections 2902.2 and 2902.3)
NEW SECTION
WAC 51-50-30020 Section 30020—Hoistway enclosures.
30020.4 Elevator car to accommodate ambulance stretcher. Where elevators are provided in buildings four or more stories above, or four or more stories below, grade plane, or in any Group R-1, R-2 or I occupancy building provided with an elevator regardless of the number of stories, not fewer than one elevator shall be provided for fire department emergency access to all floors. The elevator car shall be of such a size and arrangement to accommodate an ambulance stretcher 24-inch by 84-inch (610 mm by 2,134 mm) with not less than 5-inch (127 mm) radius corners, in the horizontal, open position and shall be identified by the international symbol for emergency medical services (star of life). The symbol shall not be less than 3 inches (76 mm) in height and shall be placed inside on both sides of the hoistway door frame.
AMENDATORY SECTION (Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)
WAC 51-50-3004 Section 3004—((Hoistway venting)) Reserved.
((3004.3 Area of vents. Except as provided for in Section 3004.3.1, the area of the vents shall not be less than 3 1/2 percent of the area of the hoistway nor less than 3 square feet (0.28 m2) for each elevator car, and not less than 3 1/2 percent nor less than 0.5 square feet (0.047 m3) for each dumbwaiter car in the hoistway, whichever is greater. The total required vent area shall be equipped with dampers that remain powered closed until activated open by the fire alarm system panel. The dampers shall open upon loss of power.))
NEW SECTION
WAC 51-50-30050 Section 30050—Machine rooms.
30050.2 Venting. Elevator machine rooms, machinery spaces that contain the driving machine, and control rooms or spaces that contain the operation or motion controller for elevator operation shall be provided with an independent ventilation or air-conditioning system to protect against the overheating of the electrical equipment. Ventilation systems shall use outdoor make up air. The system shall service the equipment space only, and shall be capable of maintaining the temperature and humidity within the range established by the manufacturer's specifications. Where no manufacturer specifications are available, the equipment space temperature shall be maintained at no less than fifty-five degrees Fahrenheit and no more than ninety degrees Fahrenheit.
The cooling load for the equipment shall include the BTU output of the elevator operation equipment as specified by the manufacturer based on one hour of continuous operation. The outdoor design temperature for ventilation shall be from the 0.5% column for summer from the Puget Sound Chapter of ASHRAE publication "Recommended Outdoor Design Temperatures, Washington State." The following formula shall be used to calculate flow rate for ventilation:
CFM = BTU output of elevator machine room equipment/[1.08 x (acceptable machine room temp - make up air temp)]
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040. AMENDATORY SECTION (Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)
WAC 51-50-3006 Section 3006—((Machine rooms)) Reserved.
((3006.2 Venting. Machinery spaces, machine rooms, control spaces, and control rooms that contain solid-state equipment for elevator operation shall be provided with an independent ventilation or air-conditioning system to protect against the overheating of the electrical equipment. Ventilation systems shall use outdoor make up air. The system shall service the equipment space only, and shall be capable of maintaining the temperature and humidity within the range established by the manufacturer's specifications. Where no manufacturer specifications are available, the equipment space temperature shall be maintained at no less than fifty-five degrees Fahrenheit and no more than ninety degrees Fahrenheit.
The cooling load for the equipment shall include the BTU output of the elevator operation equipment as specified by the manufacturer based on one hour of continuous operation. The outdoor design temperature for ventilation shall be from the 0.5% column for summer from the Puget Sound Chapter of ASHRAE publication "Recommended Outdoor Design Temperatures, Washington State." The following formula shall be used to calculate flow rate for ventilation:
CFM = BTU output of elevator machine room equipment/[1.08 x (acceptable machine room temp - make up air temp)]
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency. NEW SECTION
WAC 51-50-3009 Section 3009—Hoistway venting.
3009.1 Vents required. Hoistways of elevators and dumbwaiters penetrating more than three stories shall be provided with a means for venting smoke and hot gases to the outer air in case of fire.
3009.2 Location of vents. Vents shall be located at the top of the hoistway and shall open either directly to the outer air or through noncombustible ducts to the outer air. Noncombustible ducts shall be permitted to pass through the elevator machine room, provided that portions of the ducts located outside the hoistway or machine room are enclosed by construction having not less than the fire-resistance rating required for the hoistway. Holes in the machine room floors for the passage of ropes, cables or other moving elevator equipment shall be limited as not to provide greater than 2 inches of clearance on all sides.
3009.3 Area of vents. Except as provided for in Section 3009.3.1, the area of the vents shall not be less than 3 1/2 percent of the area of the hoistway nor less than 3 square feet (0.28 m2) for each elevator car, and not less than 3 1/2 percent nor less than 0.5 square feet (0.047 m3) for each dumbwaiter car in the hoistway, whichever is greater. The total required vent area shall be equipped with dampers that remain powered closed until activated open by the fire alarm system panel. The dampers shall open upon loss of power.
3009.3.1 Reduced vent area. Where mechanical ventilation conforming to the International Mechanical Code is provided, a reduction in the required vent area is allowed provided that all of the following conditions are met:
1. The occupancy is not in Group R-1, R-2, I-1 or I-2 or of a similar occupancy with overnight sleeping units.
2. The vents required by Section 3009.2 do not have outside exposure.
3. The hoistway does not extend to the top of the building.
4. The hoistway and machine room exhaust fan is automatically reactivated by thermostatic means.
5. Equivalent venting of the hoistway is accomplished.
AMENDATORY SECTION (Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)
WAC 51-50-3109 Section 3109—Swimming ((pool enclosures and safety devices)) pools, spas and hot tubs.
((3109.3 Public swimming pools. This section is not adopted.)) 3109.1 General. The design and construction of swimming pools, spas and hot tubs shall comply with the International Swimming Pool and Spa Code. Public swimming pool barriers are regulated by WAC 246-260-031(4).
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-3401 Section 3401—((General)) Reserved.
((3401.5 Alternative compliance. Work performed in accordance with the 2012 International Existing Building Code as amended in WAC 51-50-480000 shall be deemed to comply with the provisions of this chapter.
3401.6 Dangerous conditions. The building official shall have the authority to require the elimination of conditions deemed dangerous.))
AMENDATORY SECTION (Amending WSR 10-03-097, filed 1/20/10, effective 7/1/10)
WAC 51-50-3404 Section 3404—((Alterations)) Reserved.
((3404.1 General. Except as provided by Section 3401.4 or this section, alterations to any building or structure shall comply with the requirements of the Code for new construction. Alterations shall be such that the existing building or structure is no less conforming with the provisions of this Code than the existing building or structure was prior to the alteration.
AMENDATORY SECTION (Amending WSR 10-03-097, filed 1/20/10, effective 7/1/10)
WAC 51-50-3410 Section 3410—((Moved structures)) Reserved.
((3410.1 Conformance. Buildings or structures moved into or within the jurisdiction shall comply with the provisions of this code, the International Residential Code (chapter 51-51 WAC), the International Mechanical Code (chapter 51-52 WAC), the International Fire Code (chapter 51-54 WAC), the Uniform Plumbing Code and Standards (chapters 51-56 and 51-57 WAC), the Washington State Energy Code (chapter 51-11 WAC) and the Washington State Ventilation and Indoor Air Quality Code (chapter 51-13 WAC) for new buildings or structures.
For the purposes of this section, a building shall be considered to be substantially remodeled when the costs of remodeling exceed 60 percent of the value of the building exclusive of the costs relating to preparation, construction, demolition or renovation of foundations.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-3411 Section 3411—((Accessibility for existing buildings)) Reserved.
((3411.7 Alterations affecting an area containing a primary function. Where an alteration affects the accessibility to, or contains an area of primary function, the route to the primary function area shall be accessible. The accessible route to the primary function area shall include toilet facilities, telephones or drinking fountains serving the area of primary function.
3411.8.11 Toilet rooms. Where it is technically infeasible to alter existing toilet and bathing rooms to be accessible, an accessible family or assisted use toilet or bathing room constructed in accordance with Section 1109.2.1 is permitted. The family or assisted-use toilet or bathing room shall be located on the same floor and in the same area as the existing toilet or bathing rooms. The number of toilet or bathing rooms and water closets required by the State Building Code is permitted to be reduced by one, in order to provide accessible features.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-3500 Chapter 35—((Reference standards)) Reserved.
((Add new standards to Chapter 35:
ASTM
C150-12 Specification for Portland Cement.
C595-12 Specification for Blended Hydraulic Cement.
C1157-11 Standard Performance Specification for Hydraulic Cement.
NFPA
720-12 Standard for the Installation of Carbon Monoxide (CO) Warning Equipment in Dwelling Units. . . .908.7.1))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480000 ((2012)) 2015 International Existing Building Code.
INTERNATIONAL EXISTING BUILDING CODE
((2012)) 2015 EDITION
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480101 Section 101—General.
((101.4 Applicability. When requested by the permit applicant, this code shall apply to the repair, alteration, change of occupancy and relocation of buildings existing on the date of adoption of this code, regardless of occupancy, subject to the criteria of Sections 101.4.1 and 101.4.2. When compliance with this code has not been requested, compliance with the State Building Code as adopted in Title 51 WAC shall be demonstrated.
101.4.1 Buildings not previously occupied. A building or portion of a building that has not been previously occupied or used for its intended purpose in accordance with the laws in existence at the time of its completion shall comply with the provisions of the State Building Code adopted in Title 51 WAC, for new construction or with any current permit for such occupancy.))
101.4.2 Buildings previously occupied. The legal occupancy of any building existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the International Fire Code, or as deemed necessary by the code official to mitigate an unsafe building. For the purpose of this section, "unsafe building" is not to be construed as mere lack of compliance with the current code.
101.6 Appendices. The code official is authorized to require rehabilitation and retrofit of buildings, structures, or individual structural members in accordance with the appendices of this code if such appendices have been individually adopted. Appendix A, Guidelines for the Seismic Retrofit of Existing Buildings, is hereby adopted as part of this code without any specific adoption by the local jurisdiction.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480102 Section 102—((Applicability)) Reserved.
((102.4.1.1 Fire prevention. The provisions of the International Fire Code shall apply to matters affecting or relating to structures, processes and premises regarding: The hazard of fire and explosion arising from the storage, handling or use of structures, materials or devices; conditions hazardous to life, property or public welfare in the occupancy of structures or premises; and the construction, extension, repair, alteration or removal of fire suppression and alarm systems or fire hazards in the structure or on the premises from occupancy or operation except as specifically provided for in this Code.))
NEW SECTION
WAC 51-50-480403 Alterations.
403.1 General. Except as provided by Section 401.2 or this section, alterations to any building or structure shall comply with the requirements of the International Building Code for new construction. Alterations shall be such that the existing building or structure is no less conforming with the provisions of this code than the existing building or structure was prior to the alteration.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480407 Change of occupancy.
407.1 Conformance. No change shall be made in the use or occupancy of any building ((that would place the building in a different division of the same group of occupancy or in a different group of occupancies,)) unless such building is made to comply with the requirements of the International Building Code for ((such division or group of)) the use or occupancy. Changes in use or occupancy in a building or portion thereof shall be such that the existing building is no less complying with the provisions of this code than the existing building or structure was prior to the change. Subject to the approval of the building official, the use or occupancy of existing buildings shall be permitted to be changed and the building is allowed to be occupied for purposes in other groups without conforming to all the requirements of the International Building Code for those groups, provided the new or proposed use is less hazardous, based on life and fire risk, than the existing use. The hazard tables of Chapter 10 may be used to demonstrate the relative fire and life risk of the existing and the new proposed uses.
NEW SECTION
WAC 51-50-480409 Moved structures.
409.1 Conformance. Buildings or structures moved into or within the jurisdiction shall comply with the provisions of this code, the International Residential Code (chapter 51-51 WAC), the International Mechanical Code (chapter 51-52 WAC), the International Fire Code (chapter 51-54A WAC), the Uniform Plumbing Code and Standards (chapters 51-56 and 51-57 WAC), the Washington State Energy Code (chapter 51-11 WAC) and the Washington State Ventilation and Indoor Air Quality Code (chapter 51-13 WAC) for new buildings or structures.
For the purposes of this section, a building shall be considered to be substantially remodeled when the costs of remodeling exceed 60 percent of the value of the building exclusive of the costs relating to preparation, construction, demolition or renovation of foundations.
NEW SECTION
WAC 51-50-480410 Accessibility for existing buildings.
410.6 Alterations. A facility that is altered shall comply with the applicable provisions in Chapter 11 of the International Building Code, unless technically infeasible. Where compliance with this section is technically infeasible, the alteration shall provide access to the maximum extent technically feasible.
410.8.10 Toilet rooms. Where it is technically infeasible to alter existing toilet and bathing rooms to be accessible, an accessible family or assisted-use toilet or bathing room constructed in accordance with Section 1109.2.1 of the International Building Code is permitted. The family or assisted-use toilet or bathing room shall be located on the same floor and in the same area as the existing toilet or bathing rooms. At the inaccessible toilet and bathing rooms, directional signs indicating the location of the nearest family or assisted-use toilet or bathing room shall be provided. These directional signs shall include the International Symbol of Accessibility and sign characters shall meet the visual character requirements in accordance with ICC A117.1. The number of toilet or bathing rooms and water closets required by the Washington State Building Code is permitted to be reduced by one, in order to provide accessible features.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480505 ((Alteration—Level 3.)) Reserved.
((505.1 Scope. Level 3 alterations apply where the work area exceeds 50% of the floor area of the building.))
NEW SECTION
WAC 51-50-480705 Accessibility.
705.1.5 Dining areas. This section is not adopted.
705.1.9 Toilet rooms. Where it is technically infeasible to alter existing toilet and bathing rooms to be accessible, an accessible family or assisted use toilet or bathing room constructed in accordance with Section 1109.2.1 of the International Building Code is permitted. The family or assisted-use toilet or bathing room shall be located on the same floor and in the same area as the existing toilet or bathing rooms. At the inaccessible toilet and bathing rooms, directional signs indicating the location of the nearest family or assisted-use toilet room or bathing room shall be provided. These directional signs shall include the International Symbol of Accessibility and sign characters shall meet the visual character requirements in accordance with ICC A117.1. The number of toilet or bathing rooms and water closets required by the Washington State Building Code is permitted to be reduced by one, in order to provide accessible features.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480707 ((Energy conservation.)) Reserved.
((707.1 Minimum requirements. Level 1 alterations to existing buildings or structures shall comply with the Washington State Energy Code (chapter 51-11 WAC).))
NEW SECTION
WAC 51-50-480708 Energy conservation.
708.1 Minimum requirements. Level 1 alterations to existing buildings or structures shall comply with the Washington State Energy Code (chapter 51-11 WAC).
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480804 ((Fire protection.)) Reserved.
((804.1 Scope. The requirements of this section shall be limited to work areas in which Level 2 alterations are being performed, and where specified they shall apply throughout the floor on which the work areas are located or otherwise beyond the work area.
NEW SECTION
WAC 51-50-480906 Section 906—Accessibility.
906.1 General. A building, facility or element that is altered shall comply with this section and Sections 705 and 806.
906.2 Type B dwelling or sleeping units. Where four or more Group I-1, I-2, R-1, R-2 or R-3 dwelling or sleeping units are being altered, the requirements of Section 1107 of the International Building Code for Type B units and Chapter 9 of the International Building Code for visible alarms apply only to the quantity of the spaces being altered.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-480907 Structural.
907.4.1 Evaluation and analysis. An engineering evaluation and analysis that establishes the structural adequacy of the altered structure shall be prepared by a registered design professional and submitted to the code official. For structures assigned to Seismic Design Category D, the registered design professional shall submit to the code official a seismic evaluation report of the existing building based on one of the procedures specified in Section 301.1.4.2. This seismic evaluation report shall not be required for buildings in compliance with the benchmark building provisions of ((ASCE 31, Section 3.2)) ASCE/SEI.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-481012 ((Change of occupancy classification.)) Reserved.
((1012.1.1 Compliance with Chapter 9. The requirements of Chapter 9 shall be applicable throughout the building for the new occupancy classification based on the separation conditions set forth in Sections 1012.1.1.1 and 1012.1.1.2. All existing buildings with a change of occupancy classification shall comply with the seismic provisions of Section 1007.3.))
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-481201 Section 1201—Historic buildings—General.
1201.1 Scope. It is the intent of this chapter to provide means for the preservation of historic buildings ((as defined in Chapter 2)). It is the purpose of this chapter to encourage cost-effective preservation of original or restored architectural elements and features and to provide a historic building that will result in a reasonable degree of safety, based on accepted life and fire safety practices, compared to the existing building. Historical buildings shall comply with the provisions of this chapter relating to their repair, alteration, relocation and change of occupancy.
SECTION 1202—Reserved.
AMENDATORY SECTION (Amending WSR 13-04-067, filed 2/1/13, effective 7/1/13)
WAC 51-50-481301 Relocated or moved buildings—General.
1301.1 Scope. This chapter provides requirements for relocated or moved structures, including relocatable buildings as defined in Chapter 2.
1301.2 Conformance. Buildings or structures moved into or within the jurisdiction shall comply with the provisions of this code, the International Residential Code (chapter 51-51 WAC), the International Mechanical Code (chapter 51-52 WAC), the International Fire Code (chapter 51-54 WAC), the Uniform Plumbing Code and Standards (chapters 51-56 and 51-57 WAC), the Washington State Energy Code (chapter 51-11 WAC) and the Washington State Ventilation and Indoor Air Quality Code (chapter 51-13 WAC) for new buildings or structures.
For the purposes of this section, a building shall be considered to be substantially remodeled when the costs of remodeling exceed 60 percent of the value of the building exclusive of the costs relating to preparation, construction, demolition or renovation of foundations.
NEW SECTION
WAC 51-50-490000 Appendix N—Solar readiness.
The provisions contained in this appendix are not mandatory unless specifically referenced in the local adopting ordinance.
490101.1 General. A solar zone shall be provided on nonresidential buildings of any size that are 5 stories or less in height above grade plane, and shall be located on the roof of the building or on another structure elsewhere on the site. The solar zone shall be in accordance with Sections 490101.3 through 490101.9 and the International Fire Code.
490101.2 Definitions. The following words and terms shall, for the purposes of this appendix, have the meanings shown herein. Refer to Chapter 2 of the International Building Code for general definitions.
SOLAR ZONE. A clear area or areas reserved solely for current and future installation of photovoltaic or solarwater heating systems.
490101.3 Minimum area. The minimum area of the solar zone shall be determined by one of the following methods, whichever results in the smaller area:
1. 40 percent of roof area. The roof area shall be calculated as the horizontally-projected gross roof area, less the area covered by skylights, occupied roof decks and planted areas.
2. 20 percent of electrical service size. The electrical service size shall be the rated capacity of the total of all electrical services to the building. The required solar zone size shall be based upon 10 peak watts of PV per square foot.
490101.4 Contiguous area. The solar zone is permitted to be comprised of smaller separated subzones. Each subzone shall be at least 5 feet wide in the narrowest dimension.
490101.5 Obstructions. The solar zone shall be free of pipes, vents, ducts, HVAC equipment, skylights and other obstructions, except those serving photovoltaics or solar water heating systems within the solar zone. Photovoltaics or solar water heating systems are permitted to be installed within the solar zone. The solar zone is permitted to be located above any such obstructions, provided that the racking for support of the future system is installed at the time of construction, the elevated solar zone does not shade other portions of the solar zone, and its height is permitted by the International Building Code and other applicable codes.
490101.6 Shading. The solar zone shall be set back from any existing or new object on the building or site that is located south, east, or west of the solar zone a distance at least two times the object's height above the nearest point on the roof surface. Such objects include, but are not limited to, taller portions of the building itself, parapets, chimneys, antennas, signage, rooftop equipment, trees and roof plantings. No portion of the solar zone shall be located on a roof slope greater than 2:12 that faces within 45 degrees of true north.
490101.7 Access. Areas contiguous to the solar zone shall provide access pathways and provisions for emergency smoke ventilation as required by the International Fire Code.
490101.8 Structural integrity. The as-designed dead load and live load for the solar zone shall be clearly marked on the record drawings, and shall accommodate future photovoltaic or solar water heating arrays at an assumed dead load of 4 pounds per square foot in addition to other required live and dead loads. For photovoltaic systems, a location for future inverters shall be designated either within or adjacent to the solar zone, with a minimum area of 2 square feet for each 1,000 square feet of solar zone area, and shall accommodate an assumed dead load of 175 pounds per square foot. Where photovoltaic or solar water heating systems are installed in the solar zone, structural analysis shall be based upon calculated loads, not upon these assumed loads.
490101.9 Photovoltaic or solar water heating interconnection provisions. Buildings shall provide for the future interconnection of either a photovoltaic system in accordance with Section 490101.9.1 or a solar water heating system in accordance with Section 490101.9.2.
490101.9.1 Photovoltaic interconnection. A capped roof penetration sleeve shall be provided in the vicinity of the future inverter, sized to accommodate the future photovoltaic system conduit. Interconnection of the future photovoltaic system shall be provided for at the main service panel, either ahead of the service disconnecting means or at the end of the bus opposite the service disconnecting means, in one of the following forms:
a. A space for the mounting of a future overcurrent device, sized to accommodate the largest standard rated overcurrent device that is less than 20 percent of the bus rating;
b. Lugs sized to accommodate conductors with an ampacity of at least 20 percent of the bus rating, to enable the mounting of an external overcurrent device for interconnection.
The electrical construction documents shall indicate the following:
a. Solar zone boundaries and access pathways;
b. Location for future inverters and metering equipment; and
c. Route for future wiring between the photovoltaic panels and the inverter, and between the inverter and the main service panel.
N101.9.2 Solar water heating interconnection. Two capped pipe tees shall be provided upstream of the domestic water heating equipment to provide plumbing interconnections between a future solar water heating system and the domestic water heating system. Two roof penetration sleeves shall be provided in the vicinity of the solar zone, capable of accommodating supply and return piping for a future solar water heating system. The plumbing construction documents shall indicate the following:
a. Solar zone boundaries and access pathways;
b. Location for future hot water storage tanks; and
c. Route for future piping between the solar zone and the plumbing interconnection point, following the shortest feasible pathway.
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