PROPOSED RULES
Original Notice.
Preproposal statement of inquiry was filed as WSR 09-05-048.
Title of Rule and Other Identifying Information: Amendment of chapter 51-50 WAC, Adoption and amendment of the 2009 Edition of the International Building Code (IBC) and standards.
Hearing Location(s): Holiday Inn Select Renton, One Grady Way South, Renton, WA, on September 29, 2009, at 10:00 a.m.; and at the Spokane City Council Chambers, West 808 Spokane Falls Boulevard, Spokane, WA, on October 5, 2009, at 9:00 a.m.
Date of Intended Adoption: November 12, 2009.
Submit Written Comments to: Peter DeVries, Council Chair, P.O. Box 42525, Olympia, WA 98504-2525, e-mail sbcc@commerce.wa.gov, fax (360) 586-9383, by October 5, 2009.
Assistance for Persons with Disabilities: Contact Sue Mathers by September 15, 2009, TTY (360) 586-0772 or (360) 725-2966.
Purpose of the Proposal and Its Anticipated Effects, Including Any Changes in Existing Rules: The proposed rules adopt the most recently published edition of the IBC and modify the state amendments to this code.
1. WAC 51-50-003 International Building Code: Adopts 2009 edition, change from 2006 edition.
2. WAC 51-50-004 Conflicts. Amends reference to chapter 51-13 WAC, proposed rule integrates state ventilation code into IBC Chapter.
3. WAC 51-50-007 The 2009 International Existing Building Code is included in the adoption of this code by reference in chapter 34.
4. WAC 51-50-008 Effective date. Sets new effective date, July 1, 2010.
5. Section 105.3.1 Application for permit. Requires authorization from the state for state licensed facilities prior to permit issuance.
6. Section 108.1 Temporary structures and uses. Modifies section number consistent with new code edition.
7. Section 202 Definitions. Current state amendments for definition of "story" and "story above grade plane" adopted in the 2009 model code. State amendments deleted as they are no longer necessary. Adds definition of "air impermeable insulation."
8. Section 305.2 Day care. Modifies current state amendment to be consistent in reference to "licensed by Washington state."
9. Section 308 Institutional Group I occupancies. Modifies the model code to reference facilities licensed by Washington state and adds "hospice care centers" to Group I-2 occupancy classification.
10. Section 310 Residential Group R occupancies. This section is modified for clarity and to be consistent with the model code.
11. Section 403.5.4 Smoke proof exit enclosures. The exception clarifies the code regarding which stairways in high-rise development[s] are required to meet the smoke proof criteria.
12. Section 406.2.6 Motor vehicle related occupancies. Floor surfaces. Current state amendment adopted in the 2009 model code, allowing an exception to sloped floors in Group S-2 parking garages. State amendment deleted as it is no longer necessary.
13. Section 407.4.3 Horizontal assemblies. New section in the model code requires smoke barriers in Group I-2 occupancies. This section is not adopted.
14. Section 407.8 Locks and latches. State amendment allows locks without delayed egress in some licensed facilities. Section is moved to Chapter 10 section 1008.1.9.
15. Section 420.4. Subdivision of building spaces-smoke barriers. Requires smoke barriers in Group R-2 boarding homes licensed by Washington state. Relocates requirement from Chapter 10 section 1017.
16. Section 422 Ambulatory health care. Modifies the new section in the model code to clarify where smoke barriers and fire partitions are required.
17. Section 502.1 Definitions. State amended definitions of "basement" and "story" adopted in the 2009 model code. Deletes state amendments as they are no longer needed. (delete section, both definitions)
18. Section 506.1.1 Area modifications. Basements. Delete this section to be consistent with model code. (add to OTS document)
19. Section 509.2 and 509.3. Special provisions. Group S-2 enclosed parking garage. State amendments included in the 2009 model code revision of these sections. Delete state amendments to be consistent with the model code.
20. Section 708.14.1 Elevator lobbies. State amendments included in the 2009 revision of this section. Delete state amendments except for subsections on hoistway venting and machine rooms. Adds an exception for Group I-2 and Group R-2 occupancies.
21. Section 710.4 Smoke barriers. Continuity. Adds an exception for smoke barriers around an area of refuge.
22. Section 712.9 Horizontal assemblies. Smoke barriers. This section is not adopted.
23. Section 715.4.8. Fire door and shutter assemblies. Door closing. Adds a third exception for Group R-2 boarding homes.
24. Section 903 Automatic sprinkler systems. Section 903.2.1.6 Nightclubs, effective date for existing nightclubs adjusted to be concurrent with new code edition. Section 903.2.3. Group E, modified to be consistent with model code section number, method of calculating occupancy clarified. Section 903.2.8 Group R, modified to be consistent with model code section number.
25. Section 907.2.8 Group R-1 Carbon monoxide alarms. Requires carbon monoxide alarms in new and existing Group R-1 occupancies.
26. Section 907.2.9 Group R-2 Carbon Monoxide alarms. Requires carbon monoxide alarms in new and existing Group R-2 occupancies.
27. Section 907.2.10 Group R-3 Carbon monoxide alarms. Requires carbon monoxide alarms in new and existing Group R-3 occupancies.
28. Section 909.6.3. Elevator shaft pressurization. Modifies state amendment to make references consistent with the model code edition. Requires shaft pressurization be activated by the fire alarm, and requires two sources of power for the system.
29. Section 911.1.2. Fire command center. Separation. Requires a two-hour fire barrier protecting a fire command center.
30. Section 1007.1 Accessible means of egress required. Adds an exception for parking garages that do not contain accessible parking spaces.
31. Section 1007.8 Two-way communication. Modifies two-way communication system requirements to delete reference to the 911 option for dial-out. Adds a requirement for battery back-up.
32. Section 1008.1.2. Door swing. State amendment included in the 2009 model code revision. Delete state amendment to be consistent with the model code.
33. Section 1008.1.9.3 Locks and Latches. State amendment allows locks without delayed egress in some licensed facilities. Moved from 407.8.
34. Section 1008.1.9.6. Special locking arrangement in Group I-2. State amendment allows locks without delayed egress in some licensed facilities.
35. Section 1009.15 Stairways in individual units. State amendment provides an exception to stairways for small loft areas. Renumbered to be compatible with the model code.
36. Section 1010.1 Ramps. Adds an exception allowing a second accessible ramp in parking garages to be installed without handrails or landings.
37. Section 1014.2.2. Exit Access. Group I-2. Modifies current state amendment to be compatible with the model code and to clarify exit access provisions for suites in Group I-2.
38. Section 1015 State amendment included in the 2009 model code revision. Delete state amendment to be consistent with the model code.
39. Section 1018 Corridors. Sections deleted to be consistent with the model code numbering. State amendments modified to be consistent with model code numbering. Modifies "seating areas" in corridors for state licensed facilities.
40. Section 1019 State amendment included in the 2009 model code revision. Delete state amendment.
41. Section 1106 Parking and Passenger loading facilities. Modifies state amendment to reference Group I-2 outpatient facilities. Deletes state amendment on rehabilitation facilities; amendment is adopted in the model code.
42. Section 1203.2 Ventilation. Attic spaces. Modifies the model code to clarify where reduced structure ventilation is allowed.
43. Section 1203.4 Natural ventilation. Changes reference from the Washington state ventilation and indoor air quality code to the international mechanical code.
44. Section 1203.6 Radon resistive construction standards. Adds radon standards from the Washington state ventilation and indoor air quality code.
45. Section 1208.2 Minimum ceiling heights. Moves provision allowing a seven-foot ceiling to section 3404, existing construction.
46. Section 1208.3 Room area. Provides an exception for kitchens, providing no minimum room size, consistent with the residential code.
47. Section 1403.2 Weather protection. Modifies state amendment to clarify where an air space cavity behind siding is not required.
48. Section 1405.6.2. Seismic requirements. Anchored masonry veneer. Modifies state amendment to be consistent with new section in the model code. Provides an exception for "category III and IV" occupancies.
49. Section 1602 Definitions. State amendment related to "balcony" and "deck" included in the 2009 model code revision. Delete state amendment.
50. Section 1607 Live Loads. State amendment related to "balcony" and "deck" included in the 2009 model code revision. Delete state amendment to be consistent with the model code.
51. Section 1609.1.1 Determination of wind loads. State amendment corrects an error to the standard for determining topographic wind speed-up in antenna-supporting structural design.
52. Section 1613.7. Earthquake loads. Modification of ASCE 7. State amendment no longer necessary. Delete state amendment.
53. Section 1715.5 Preconstruction load tests. Exterior window and door assemblies. Modifies section number to be consistent with model code. Provides an exception for small businesses.
54. Section 2104.1 Masonry Construction. Modifies the standard for masonry construction.
55. Section 2106.1.1 Basic seismic-force-resisting system. State amendment no longer necessary. Delete state amendment.
56. Section 2107.1 Allowable stress design, masonry structures. General. Adds a reference to new section 2107.2, Load combinations. Allows stresses to be increased by one-third.
57. Section 2107.6 Adds a new section on anchor bolts.
58. Section 2108.4. Strength design of masonry. Adds a new section on anchor bolts.
59. Section 2111.7 Masonry fireplaces. Moves provisions from Washington state ventilation and indoor air quality code.
60. Section 2405.3 Sloped glazing and skylights. Screening. Expands exemption for screens over laminated glass.
61. Chapter 29 Minimum fixtures and sanitation facilities. Clarifies the use of the chapter and the use of occupant load factors establishing the minimum number of plumbing fixtures and sanitation facilities.
62. Section 3001. Elevators and conveying systems. General. State amendment deleted to be consistent with model code.
63. Section 3002.4. Elevator car to accommodate ambulance stretcher. Section is modified to include new model code language related to stretcher corner dimension.
64. Section 3108.1 Telecommunication and broadcast towers. Adds a provision requiring seismic design for towers.
65. Section 3401.5 Alternative compliance. Allows the use of the 2009 International Existing Building Code as amended by state adoption.
66. Section 3404.1 Alterations. Allows a seven foot ceiling in an existing residence.
67. Section 3410. Moved structures. State amendment moved to be consistent with new section in the model code. State amendment conforms to RCW 19.27.180.
68. Section 3411.7 Accessibility for existing buildings. Alterations affecting an area containing a primary function. State amendment requires a text telephone, renumbered to be consistent with the model code.
69. Section 3411.8.8 Type A dwelling or sleeping units. Modifies section to add reference to "altered" units.
70. Section 3411.8.11. Toilets. Renumbered to be consistent with the model code.
71. WAC 51-50-480000. 2009 International Existing Building Code. Adopts and amends the 2009 IEBC.
72. Section 480101. Applicability. Modifies section to specify use of this code is at the request of the permit applicant. Alternative is to meet the building code as applicable.
73. Section 480101.4.2 Buildings previously occupied. Clarifies "unsafe building." (change reference to codes to "state building code in TITLE 51 WAC" as in previous section.)
74. Section 480101.5 Compliance methods. This section is deleted as the model code has adopted the state amendment.
75. Section 480101.7 Appendices. State amendment adopts Appendix A Guidelines for the Seismic Retrofit of Existing Buildings.
76. Section 480102.4.1 Fire Prevention. Specifies the scope of the fire code.
77. Section 480302.1. Existing buildings or structures. State amendment is deleted to be consistent with the model code.
78. Section 480307.1 Change of Occupancy. Conformance. State amendment is renumbered to be consistent with the model code. References hazard tables of chapter 9.
79. Section 480506. Seismic Forces. State amendment is deleted to be consistent with model code.
80. Section 480607.1 Energy conservation. Cites the Washington State Energy Code chapter 51-11 WAC.
81. Section 480711 Energy conservation. Cites the Washington State Energy Code chapter 51-11 WAC.
82. Section 480807 Structural. Maintains current state amendments for evaluation and analysis, and substantial structural alteration.
83. Section 480808 Energy conservation. Cites the Washington State Energy Code chapter 51-11 WAC.
84. Section 4801101.1 Historic buildings. Maintains current state amendment stating the purpose of the chapter is to encourage cost-effective preservation of original or restored architectural elements.
85. Section 4801101.2 Report. State amendment is deleted to be consistent with model code.
86. Section 4801102 Repairs. Chapter 5 compliance; Replacement. State amendment is deleted to be consistent with model code.
87. Section 481104 Alterations. Model code references are updated.
88. Section 481106 Structural. State amendment is adopted in the model code. State amendment is deleted.
89. Section 481201 Moved buildings. Section conforms to state law and is moved to reflect new section in the model code.
90. Section 481301 Performance compliance. State amendment is deleted to be consistent with the model code.
91. Section 481500 Referenced standards. State amendment is deleted to be consistent with the model code.
Reasons Supporting Proposal: RCW 19.27.031 and 19.27.074.
Statutory Authority for Adoption: RCW 19.27.031 and 19.27.074.
Statute Being Implemented: Chapters 19.27 and 34.05 RCW.
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: The council is seeking comments on the issues proposed in the rules shown below.
Name of Proponent: Washington state building code council, governmental.
Name of Agency Personnel Responsible for Drafting and Implementation: Joanne McCaughan, P.O. Box 42525, Olympia, WA 98504-2525, (360) 725-2970; and Enforcement: Local jurisdictions.
A small business economic impact statement has been prepared under chapter 19.85 RCW.
INTRODUCTION: The state building code council is proposing to adopt the 2009 version of the IBC. The following sections were identified by the council's economic and regulatory assessment committee (ERAC) as having a potential disproportionate cost impact to small business:
| • | Section 1714.5 Exterior Door and Window Assemblies |
The IBC is published by the International Code Council.
The council appointed a technical advisory group (TAG) to do a comprehensive review and analysis of changes in the 2009 edition of the IBC. The TAG held meetings in the spring of 2009. All proposed state amendments were examined, and new provisions in the 2009 model code edition. The TAGs identified items with more than a minor first cost impact and referred these items to be reviewed by ERAC.
The council members and participants are representative sample of individuals involved in the building construction industry. The participants included: Architects, home builders, building officials, contractors, fire officials, manufacturers, engineers, plumbers, state and local officials, inspectors, industry associations and organizations, companies and business, electricians, and the general public. See the directory of TAG and council members.
BRIEF DESCRIPTION OF PROPOSED RULE AMENDMENTS:
Section 1715.5 Preconstruction Load Tests, Exterior window and door assemblies: Requires exterior window and door assemblies to be tested and labeled according to a test standard for structural loading.
Reporting and record-keeping requirements: The proposed rule impacts the reporting and/or record keeping required to comply. Small business window and door manufacturers would be required to keep records of test results for all units.
Associated costs: Associated costs of equipment, supplies, labor, professional services and administrative costs are included in the cost of compliance.
The TAG identified a disproportionate impact on small business window and door manufacturers to test and label all units. The cost of testing sample units and labeling all units to meet the standards would be disproportionate due to the production process. A comparison per one hundred dollars of sales shows a disproportionate cost for small manufacturers to test and label product. Large window manufacturers, due to volume of production, have a cost per unit for testing and labeling disproportionately less compared to small business window manufacturers; the cost per testing and labeling custom window[s] due to limited production lines has an impact at least ten times greater than large manufacturers and in fact makes production cost prohibitive and compliance with the rule impractical.
Lost sales or revenue: The TAG identified a potential loss of sales and revenue for small business window manufacturers.
Steps taken to reduce costs: Through a formal and established method of negotiated rule making, the council and the affected industries have considered and mitigated costs associated with the proposed rules. The proposed rule modifies substantive regulatory requirements on small businesses. The proposed rule allows an alternate method of compliance to avoid cost and disproportionate economic impact associated with testing and labeling window and door products manufactured by small businesses in Washington state. The council solicited feedback from the industry to develop methods to mitigate the costs and provide a method to avoid additional costs of compliance.
Involvement of small businesses: The council has included small businesses in the development of the proposed rules.
| • | Small businesses were included in mailings and electronic notification. |
| • | Small businesses were notified of meetings, agenda topics and proposals. |
| • | Council members, technical group members and staff responded to inquiries from small businesses. |
| • | The technical advisory group convened a special meeting to address small business concerns. |
| NAICS # | DESCRIPTION | NUMBER OF FIRMS | |
| 321911 | Wood window and door manufacturing | 52 | 5 |
| 332321 | Metal window and door manufacturing | 14 | 3 |
| 327211 | Flat Glass Manufacturing | 10 | 2 |
| 321918 | Other Millwork | 49 | 6 |
Job estimates: No jobs created or lost as a result of compliance with the proposed rule, as the alternative method allows compliance, and has been in effect since 2007.
CONCLUSION: The council recognizes that the proposed rules may impose an economic impact on businesses in the building construction industry. However, the council also realizes its obligation to ensure the health, safety and welfare of the occupants or users of buildings and structures and the general public through the provisions of the building codes throughout the state, as stated in the council's legislative mandate.
The council has negotiated the proposed rules into their current form in an effort to achieve a minimum standard that meets the need of the building construction industry and the citizens of this state. The council appointed TAGs to do a comprehensive review and analysis of the proposed changes to the model code. All proposed state amendments submitted in 2009 were reviewed. The TAG findings were reviewed by ERAC to determine where the proposed rules would impact small businesses. To mitigate the impacts, the proposed rules were modified to eliminate disproportionate cost impact on the effected small businesses.
A copy of the statement may be obtained by contacting Tim Nogler, P.O. Box 42525, Olympia, WA 98504-2525, phone (360) 725-2969, fax (360) 586-9383, e-mail nogler.tim@commerce.wa.gov.
A cost-benefit analysis is not required under RCW 34.05.328. The state building code council is not listed in this section as one of the agencies required to comply with this statute.
August 1, 2009
Peter D. DeVries
Council Chair
OTS-2576.3
STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE ((2006))
2009 EDITION OF THE INTERNATIONAL BUILDING CODE
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-003, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-003, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 04-18-033, § 51-50-003, filed 8/25/04, effective 9/25/04. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-003, filed 12/17/03, effective 7/1/04.]
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 ((2006)) 2009 International Existing Building Code is
((referenced)) included in the adoption of this code ((as
Appendix Chapter M and may be adopted by the authority having
jurisdiction in accordance with Section 101.2.1)) in Section
3401.5 and amended in WAC 51-50-480000.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-007, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-007, filed 12/17/03, effective 7/1/04.]
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-008, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-008, filed 12/17/03, effective 7/1/04.]
105.3.1 Action on application. The building official shall
examine or cause to be examined applications for permits and
amendments thereto within a reasonable time after filing. If
the application or the construction documents do not conform
to the requirements of pertinent laws, the building official
shall reject such application in writing, stating the reasons
therefor. If the building official is satisfied that the
proposed work conforms to the requirements of this code and
laws and ordinances applicable thereto, the building official
shall issue a permit therefor as soon as practicable.
| EXCEPTION: | Structures, or portions thereof, that are required to be licensed by the state of Washington as a hospital, hospice care center, boarding home, nursing home, residential treatment facility or ambulatory surgery center must receive authorization to begin construction from the Washington state department of health, construction review services prior to the issuance of a construction permit. |
[]
((107.1)) 108.1 General. The building official is authorized
to issue a permit for temporary structures and temporary uses.
Such permits shall be limited as to time of service, but
shall not be permitted for more than 180 days. The building
official is authorized to grant extensions for demonstrated
cause.
| EXCEPTION: | The building official may authorize unheated tents and yurts under 500 square feet accommodating an R-1 Occupancy for recreational use as a temporary structure and allow them to be used indefinitely. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0107, filed 12/19/06, effective 7/1/07.]
SECTION 202 -- DEFINITIONS.
ADULT FAMILY HOME. See Section 310.2.
AIR-PERMEABLE 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.
CHILD DAY CARE. See Section 310.2.
CHILD DAY CARE HOME, FAMILY. See Section 310.2.
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.
PORTABLE SCHOOL CLASSROOM. See Section 902.1.
RESIDENTIAL CARE/ASSISTED LIVING FACILITIES. See Section 310.2. This
definition is not adopted.
((STORY. That portion of a building included between the upper
surface of a floor and the upper surface of the floor or roof
next above, including basements (also see "Mezzanine" and
Section 502.1). It is measured as the vertical distance from
top to top of two successive tiers of beams or finished floor
surfaces and, for the topmost story, from the top of the floor
finish to the top of the ceiling joists or, where there is not
a ceiling, to the top of the roof rafters.
STORY ABOVE GRADE PLANE. Any story having its finished floor
surface entirely above grade plane, except that a basement
shall be considered as a story above grade plane where the
finished surface of the floor or roof next above the basement
is:
1. More than 6 feet (1829 mm) above grade plane; or
2. More than 12 feet (3658 mm) above the finished ground level at any point.))
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-0200, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0200, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-0200, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0200, filed 12/17/03, effective 7/1/04.]
305.2 Day Care. The use of a building or structure, or
portion thereof, for educational, supervision or personal care
services for more than five children older than 2 1/2 years of
age, shall be classified as a Group E Occupancy.
| EXCEPTION: | Family child day care homes licensed by (( |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0305, filed 12/17/03, effective 7/1/04.]
308.1 Institutional Group I. Institutional Group I Occupancy
includes, among others, the use of a building or structure, or
a portion thereof, in which people are cared for or live in a
supervised environment, having physical limitations because of
health or age are harbored for medical treatment or other care
or treatment, or in which people are detained for penal or
correctional purposes or in which the liberty of the occupants
is restricted. Institutional occupancies shall be classified
as Group I-1, I-2, I-3 or I-4.
308.2 Group I-1. This occupancy shall include buildings,
structures or parts thereof housing more than 16 persons, on a
24-hour basis, who because of age, mental disability or other
reasons, live in a supervised residential environment that
provides personal care services. The occupants are capable of
responding to an emergency situation without physical
assistance from staff. This group shall include, but not be
limited to, the following:
Residential board and care facilities
Assisted living facilities
Halfway houses
Group homes
Congregate care facilities
Social rehabilitation facilities
Alcohol and drug centers
Convalescent facilities
A facility such as the above with five or fewer persons
and adult family homes licensed by ((the)) Washington state
((department of social and health services)) shall be
classified as a Group R-3 or shall comply with the
International Residential Code in accordance with Section
101.2.
A facility such as the above, providing licensed care to
clients in one of the categories listed in Section 310.1
((regulated)) licensed by ((either the)) Washington
((department of health or the department of social and health
services)) state shall be classified as Group R-2.
308.3 Group I-2. This occupancy shall include buildings and
structures used for medical, surgical, psychiatric, nursing or
custodial care on a 24-hour basis of more than five persons
who are not capable of self-preservation. This group shall
include, but not be limited to, the following:
Hospitals
Nursing homes (both intermediate-care facilities and skilled nursing facilities)
Mental hospitals
Detoxification facilities
Hospice care centers
A facility such as the above providing licensed care to clients in one of the categories listed in Section 310.1 licensed by Washington state shall be classified as Group R-2.
A facility such as the above with five or fewer persons shall be classified as Group R-3 or shall comply with the International Residential Code in accordance with Section 101.2.
((A facility such as the above providing licensed care to
clients in one of the categories listed in Section 310.1
regulated by either the Washington department of health or the
department of social and health services shall be classified
as Group R-2.))
308.3.1 Definitions. The following words and terms shall, for
the purposes of this section and as used elsewhere in this
code, have the meanings shown herein.
CHILD CARE FACILITIES. Facilities that provide care on a 24-hour
basis to more than five children, 2 1/2 years of age or less,
shall be classified as Group I-2.
DETOXIFICATION FACILITY. Facilities that serve patients who are
provided treatment for substance abuse on a 24-hour basis and
who are incapable of self-preservation or who are harmful to
themselves or others.
HOSPITALS AND MENTAL HOSPITALS. A building or portion thereof used
on a 24-hour basis for the medical, psychiatric, obstetrical
or surgical treatment of inpatients who are incapable of
self-preservation.
NURSING HOMES. Nursing homes are long-term care facilities on a
24-hour basis, including both intermediate care facilities and
skilled nursing facilities, serving more than five persons and
any of the persons are incapable of self-preservation.
HOSPICE CARE CENTER. A building or portion thereof used on a
24-hour basis for the provision of hospice services to
terminally ill inpatients.
308.5.2 Child care facility. A facility that provides
supervision and personal care on a less than 24-hour basis for
more than five children 2 1/2 years of age or less shall be
classified as Group I-4.
| EXCEPTIONS: | 1. A child day care facility that provides care for more than five but no more than 100 children 2 1/2 years or
less of age, (( |
| 2. Family child day care homes licensed by (( |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0308, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0308, filed 12/17/03, effective 7/1/04.]
310.1 Residential Group R. Residential Group R includes,
among others, the use of a building or structure, or a portion
thereof, for sleeping purposes when not classified as an
Institutional Group I or when not regulated by the
International Residential Code in accordance with Section
101.2. Residential occupancies shall include the following:
R-1 Residential occupancies containing sleeping units where
the occupants are primarily transient in nature, including:
Boarding houses (transient)
Hotels (transient)
Motels (transient)
Congregate living facilities (transient) with 10 or fewer occupants are permitted to comply with the construction requirements for Group R-3.
R-2 Residential occupancies containing sleeping units or more
than two dwelling units where the occupants are primarily
permanent in nature, including:
Apartment houses
Boarding houses (not transient)
Boarding homes as licensed by ((department of social and
health services)) Washington state under chapter 388-78A WAC
Convents
Dormitories
Fraternities and sororities
Hotels (nontransient)
Live/work units
Monasteries
Motels (nontransient)
Residential treatment facilities as licensed by
((department of health)) Washington state under chapter 246-337 WAC
Vacation timeshare properties
Congregate living facilities with sixteen or fewer occupants are permitted to comply with the construction requirements for Group R-3.
R-3 Residential occupancies where the occupants are primarily
permanent in nature and not classified as Group R-1, R-2, R-4
or I ((and where)), including: Buildings that do not contain
more than two dwelling units ((as applicable in Section 101.2,
including adult family homes and family child day care homes
for the care of twelve or fewer children, licensed by the
Washington state department of social and health services,
or)). Adult ((and child)) care facilities that provide
accommodations for five or fewer persons of any age for less
than 24 hours((, or)). Child care facilities that provide
accommodations for five or fewer persons of any age for less
than 24 hours. Congregate living facilities with sixteen or
fewer persons. Adult ((family homes and family child day care
homes, or adult and child care facilities that are)) care
within a single-family home, adult family homes and family
child day care homes are permitted to comply with the
International Residential Code ((in accordance with Section
101.2)).
Foster family care homes licensed by ((the)) Washington
state ((department of social and health services shall be))
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.
R-4 classification is not adopted. Any reference in this
code to R-4 does not apply.
310.2 Definitions. The following words and terms shall, for
the purposes of this section and as used elsewhere in this
code, have the meanings shown herein.
ADULT FAMILY HOME ((means)). 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.
BOARDING HOUSE. A building arranged or used for lodging for
compensation, with or without meals, and not occupied as a
single family unit.
CHILD DAY CARE((, shall,)). For the purposes of these
regulations, ((mean)) is the care of children during any
period of a 24-hour day.
CHILD DAY CARE HOME, FAMILY ((is)). A child day care facility,
licensed by ((the)) 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.
CONGREGATE LIVING FACILITIES. A building or part thereof that
contains sleeping units where residents share bathroom and/or
kitchen facilities.
DORMITORY. A space in a building where group sleeping
accommodations are provided in one room, or in a series of
closely associated rooms, for persons not members of the same
family group, under joint occupancy and single management, as
in college dormitories or fraternity houses.
PERSONAL CARE SERVICE. The care of residents who do not require
chronic or convalescent medical or nursing care. Personal
care involves responsibility for safety of the resident while
inside the building.
RESIDENTIAL CARE/ASSISTED LIVING FACILITIES. This definition is not
adopted.
TRANSIENT. Occupancy of a dwelling or sleeping unit for not
more than 30 days.
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-0310, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0310, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0310, filed 12/17/03, effective 7/1/04.]
403.5.4 Smokeproof exit enclosures. Every required level exit
stairway serving floors more than 75 feet (22,860 mm) above
the lowest level of fire department vehicle access shall
comply with Sections 909.20 and 1022.9.
| EXCEPTION: | Unless required by other sections of this code, portions of such stairways which extend to serve floors below the level of exit discharge need not comply with Sections 909.20 and 1022.9 provided the portion of the stairway below is separated from the level of exit discharge with a 1 hour fire barrier. |
[]
((406.2.6 Floor surface. Parking surfaces shall be of
concrete or similar noncombustible and nonabsorbent materials.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0406, filed 12/19/06, effective 7/1/07.]
((407.8 Locks on exit doors. Approved, listed locks without
delayed egress shall be permitted in nursing homes or portions
of nursing homes, provided that:
1. The clinical needs of one or more patients require specialized security measures for their safety.
2. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
3. The doors unlock upon loss of electrical power controlling the lock or lock mechanism.
4. The lock shall be capable of being deactivated by a signal from a switch located in an approved location.
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.)) 407.4.3 Horizontal assemblies. This section is not adopted.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0407, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-0407, filed 12/2/04, effective 7/1/05.]
420.4 Subdivision of building spaces -- Smoke barriers. Smoke
barriers complying with Section 709 shall be installed on
floors other than the level of exit discharge of a Group R-2
boarding home or residential treatment facility licensed by
Washington state, where a fire-resistance rated corridor is
required by Table 1017.1. The smoke barrier shall subdivide
the floor into at least two compartments complying with
Section 407.4.
[]
422.1 General. Occupancies classified as ambulatory health
care facilities shall comply with the provisions of Sections
422.1 through 422.7 and other applicable provisions of this
code by the services provided.
422.2 Separation. Ambulatory health care facilities where
four or more care recipients are rendered incapable of
self-preservation at any given time shall be separated from
adjacent spaces, corridors or tenants with a fire partition
installed in accordance with Section 709.
422.3 Smoke compartments. Where the aggregate area of one or
more ambulatory health care facility exceeds 10,000 square
feet on one story, the story shall be provided with a smoke
barrier to subdivide the story into not less than two smoke
compartments. Smoke barriers shall be installed in accordance
with Section 710. The area of any one such smoke compartment
shall not exceed 22,500 square feet (2092 m2). The travel
distance from any point in a smoke compartment to a smoke
barrier door shall not exceed 200 feet (60,960 mm).
| EXCEPTION: | Where the ambulatory health care facility is completely surrounded by the required smoke barrier, such smoke barriers shall not be required to be continuous from an outside wall to outside wall. |
422.5 Independent egress. A means of egress shall be provided
from each smoke compartment created by smoke barriers without
having to return through the smoke compartment from which
means of egress originated.
422.6 Automatic sprinkler systems. Automatic sprinkler
systems shall be provided for ambulatory care facilities in
accordance with Section 903.2.2.
422.7 Fire alarm systems. A fire alarm system shall be
provided for ambulatory health care facilities in accordance
with Section 907.2.2.1.
[]
502.1 Definitions. ((The following words and terms shall, for
the purposes of this chapter and as used elsewhere in this
code, have the meanings shown herein.
BASEMENT. A story that is partly or completely below grade
plane (see "Story above grade plane" in Section 202). A
basement shall be considered as a story above grade plane
where the finished surface of the floor or roof next above the
basement is:
1. More than 6 feet (1829 mm) above grade plane; or
2. More than 12 feet (3658 mm) above the finished ground level at any point.
STORY. That portion of a building included between the
upper surface of a floor and the upper surface of the floor or
roof next above, including basements (also see "Basement" and
"Mezzanine").)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0502, filed 12/19/06, effective 7/1/07.]
((506.1.1 Basements. Basements below the first story above
grade plane need not be included in the total allowable area
provided each such basement does not exceed the area permitted
for a building with no more than one story above grade
plane.)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0506, filed 12/19/06, effective 7/1/07.]
((509.2 Group S-2 enclosed or open parking garage with Group
A, B, M, R or S above. A building shall be considered as two
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 minimum 3-hour fire-resistance rating.
2. The building below the horizontal assembly is no more than one story above grade plane.
3. The building below the horizontal assembly is of Type IA construction.
4. Shaft, stairway, ramp and escalator enclosures through the horizontal assembly shall have not less than a 2-hour fire-resistance rating with opening protectives in accordance with Table 715.4.
6. The building below the horizontal assembly is a Group S-2 enclosed or open parking garage, used for the parking and storage of private motor vehicles.
509.3 Group S-2 enclosed parking garage with Group S-2 open
parking garage above. A Group S-2 enclosed parking garage
with no more than one story above grade plane and located
below a Group S-2 open parking garage shall be classified as a
separate and distinct building for the purpose of determining
the type of construction where the following conditions are
met:
1. The allowable area of the building shall be such that the sum of the ratios of the actual area divided by the allowable area for each separate occupancy shall not exceed 1.0.
2. The Group S-2 enclosed parking garage is of Type I or II construction and is at least equal to the fire-resistance requirements of the Group S-2 open parking garage.
3. The height and number of tiers of the Group S-2 open parking garage shall be limited as specified in Table 406.3.5.
4. The floor assembly separating the Group S-2 enclosed parking garage and Group S-2 open parking garage shall be protected as required for the floor assembly of the Group S-2 enclosed parking garage. Openings between the Group S-2 enclosed parking garage and Group S-2 open parking garage, except exit openings, shall not be required to be protected.
5. The Group S-2 enclosed parking garage is used exclusively for the parking or storage of private motor vehicles, but shall be permitted to contain an office, waiting room and toilet room having a total area of not more than 1,000 square feet (93 m2), and mechanical equipment rooms incidental to the operation of the building.)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0509, filed 12/19/06, effective 7/1/07.]
((707.14.2 Enclosed elevator lobby pressurization alternative.
Where elevator hoistway pressurization is provided in lieu of
required enclosed elevator lobbies, the pressurization system
shall comply with this section.
707.14.2.1 Pressurization requirements. Elevator hoistways
shall be pressurized to maintain a minimum positive pressure
of 0.10 inches of water column with respect to adjacent
occupied space on all floors and a maximum pressure so as to
not prevent the automatic operation of the elevator doors, as
well as accounting for the stack and wind effect expected on
the mean low temperature January day. This pressure shall be
measured at the midpoint of each hoistway door, with all
hoistway doors open at the designated primary recall level and
all other hoistway doors closed. The supply air intake shall
be from an outside, uncontaminated source located a minimum
distance of 20 feet from any air exhaust system or outlet.
707.14.2.2 Ducts for system. Any duct system that is part of
the pressurization system shall be protected with the same
fire-resistance rating as required for the elevator shaft
enclosure.
707.14.2.3 Fan system. The fan system provided for the
pressurization system shall be as required by this section.
707.14.2.3.1 Fire resistance. When located within the
building, the fan system that provides the pressurization
shall be protected with the same fire-resistance rating
required for the elevator shaft enclosure.
707.14.2.3.2 Smoke detection. The fan system shall be
equipped with a smoke detector that will automatically shut
down the fan system when smoke is detected within the system.
707.14.2.3.3 Separate systems. A separate fan system shall be
used for each bank of elevators.
707.14.2.3.4 Fan capacity. The supply fan shall either be
adjustable with a capacity of at least 1000-cfm (.4719 m3/s)
per door, or that specified by a registered design
professional to meet the requirements of a designed
pressurization system.
707.14.2.4 Standby power. The pressurization system shall be
provided with standby power from the same source as other
required emergency systems for the building.
707.14.2.5 Activation of pressurization system. The elevator
pressurization system shall be activated upon activation of
the building fire alarm system or upon activation of the
elevator lobby smoke detectors.
707.14.2.6 Elevator doors. Each elevator door shall operate
properly when hoistway pressurization is in effect.
707.14.2.7)) 708.14.1 Elevator lobby. An enclosed elevator
lobby shall be provided at each floor where an elevator shaft
enclosure connects more than three stories. The lobby
enclosure shall separate the elevator shaft enclosure doors
from each floor by fire partitions. In addition to the
requirements in Section 709 for fire partitions, doors
protecting openings in the elevator lobby enclosure walls
shall also comply with Section 715.4.3 as required for
corridor walls and penetrations of the elevator lobby
enclosure by ducts and air transfer openings shall be
protected as required for corridors in accordance with Section
716.5.4.1. Elevator lobbies shall have at least one means of
egress complying with Chapter 10 and other provisions within
this code.
| EXCEPTIONS: | 1. Enclosed elevator lobbies are not required at the street floor, provided the entire street floor is equipped with an automatic sprinkler system in accordance with Section 903.3.1.1. |
| 2. Elevators not required to be located in a shaft in accordance with Section 708.2 are not required to have enclosed elevator lobbies. | |
| 3. Enclosed elevator lobbies are not required where additional doors are provided at the hoistway opening in accordance with Section 3002.6. Such doors shall be tested in accordance with UL 1784 without an artificial bottom seal. | |
| 4. Enclosed elevator lobbies are not required where the building is protected by an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2. This exception shall not apply to the following: | |
| 4.1 Group I-2 occupancies; | |
| 4.2 Group I-3 occupancies; | |
| 4.3 High-rise buildings. | |
| 5. Smoke partitions shall be permitted in lieu of fire partitions to separate the elevator lobby at each floor where the building is equipped throughout with an automatic sprinkler system installed in accordance with Section 903.1.1 or 903.3.1.2. In addition to the requirements in Sections 711.5.2, 711.5.3, and 715.4.8 and duct penetrations of the smoke partitions shall be protected as required for corridors in accordance with Section 716.5.4.1. | |
| 6. Enclosed elevator lobbies are not required where the elevator hoistway is pressurized in accordance with Section 708.14.2. | |
| 7. Enclosed elevator lobbies are not required where the elevator serves only open parking garages in accordance with Section 406.3. | |
| 8. Floors in I-2 and R-2 occupancies that are subdivided as required in Sections 407.4 and 1017.6. |
((707.14.2.8)) 708.14.2.13 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.
((707.14.2.9 Special inspection. Special inspection for
performance shall be required in accordance with Section
909.18.8. System acceptance shall be in accordance with
Section 909.19.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0707, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0707, filed 12/17/03, effective 7/1/04.]
710.4 Continuity. Smoke barriers shall form an effective
membrane continuous from outside wall to outside wall and from
the top of the foundation or floor/ceiling assembly below to
the underside of the floor or roof sheathing, deck or slab
above, including continuity through concealed spaces, such as
those found above suspended ceiling, and interstitial
structural and mechanical spaces. The supporting construction
shall be protected to afford the required fire-resistance
rating of the wall or floor supported in buildings of other
than Type IIB, IIIB, or VB construction.
| EXCEPTIONS: | 1. Smoke-barrier walls are not required in interstitial spaces where such spaces are designed and constructed with ceilings that provide resistance to the passage of fire and smoke equivalent to that provided by the smoke-barrier walls. |
| 2. Smoke barriers provided to enclose areas of refuge as required by Section 1007.6 are not required to extend from outside wall to outside wall. |
[]
712.9 Smoke barrier. This section is not adopted.
[]
715.4.8 Door closing. Fire doors shall be self- or
automatic-closing in accordance with this section.
| EXCEPTIONS: | 1. Fire doors located in common walls separating sleeping units in Group R-1 shall be permitted without automatic- or self-closing devices. |
| 2. The elevator car doors and the associated hoistway enclosure doors at the floor level designated for recall in accordance with Section 3003.2 shall be permitted to remain open during Phase I emergency recall operation. | |
| 3. Door closures shall not be required on any Group R-2 Occupancy licensed as a boarding home by Washington state that meets all of the IBC and IFC requirements for a Group I-2 Occupancy licensed as and meeting all of the staffing requirements of a skilled nursing facility. |
[]
903.2.1.6 Nightclub. An automatic sprinkler system shall be
provided throughout Group A-2 nightclubs as defined in this
code. An existing nightclub constructed prior to July 1,
2006, shall be provided with automatic sprinklers not later
than ((December 1, 2009)) July 1, 2010.
((903.2.2)) 903.2.3 Group E. An automatic sprinkler system
shall be provided for Group E Occupancies.
| EXCEPTIONS: | 1. Portable school classrooms, provided aggregate area of any cluster or portion of a cluster of portable school
classrooms does not exceed 5,000 square feet (1465 m2); and clusters of portable school classrooms shall be
separated as required (( |
| 2. Group E occupancies with an occupant load of 50 or less. |
| EXCEPTION: | Group R-1 if all of the following conditions apply: |
| 1. The Group R fire area is no more than 500 square feet and is used for recreational use only. | |
| 2. The Group R fire area is only one story. | |
| 3. The Group R fire area does not include a basement. | |
| 4. The Group R fire area is no closer than 30 feet from another structure. | |
| 5. Cooking is not allowed within the Group R fire area. | |
| 6. The Group R fire area has an occupant load of no more than 8. | |
| 7. A hand held (portable) fire extinguisher is in every Group R fire area. |
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-0903, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0903, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-0903, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0903, filed 12/17/03, effective 7/1/04.]
[F] 907.2.8 Group R-1. Fire alarm systems, smoke alarms and
carbon monoxide alarms shall be installed in Group R-1
occupancies as required in Sections 907.2.8.1 through
907.2.8.4.
[F] 907.2.8.4. Carbon monoxide alarms. For new construction,
an approved carbon monoxide alarm shall be installed outside
of each separate sleeping area in the immediate vicinity of
the bedroom in sleeping units within which fuel-fired
appliances are installed, and in sleeping units that have
attached garages.
[F] 907.2.8.4.1 Existing sleeping units. Existing sleeping
units within which fuel-fired appliances exist or that have
attached garages shall be equipped with carbon monoxide alarms
by January 1, 2013.
[F] 907.2.8.4.2 Alarm requirements. Single station carbon
monoxide alarms shall be listed as complying with UL 2034 and
shall be installed in accordance with this code and the
manufacturer's installation instructions.
[F] 907.2.9 Group R-2. Fire alarm systems, smoke alarms and
carbon monoxide alarms shall be installed in Group R-2
occupancies as required in Sections 907.2.9.1 through
907.2.9.3.
[F] 907.2.9.3. Carbon monoxide alarms. For new construction,
an approved carbon monoxide alarm shall be installed outside
of each separate sleeping area in the immediate vicinity of
the bedroom in dwelling units within which fuel-fired
appliances are installed and in dwelling units that have
attached garages.
[F] 907.2.9.3.1 Existing dwelling units. Existing dwelling
units within which fuel-fired appliances exist or that have
attached garages shall be equipped with carbon monoxide alarms
by January 1, 2013.
907.2.9.3.2 Alarm requirements. Single station carbon
monoxide alarms shall be listed as complying with UL 2034 and
shall be installed in accordance with this code and the
manufacturer's installation instructions.
[F]907.2.10 Group R-3. Carbon monoxide alarms shall be
installed in Group R-3 occupancies as required in Sections
907.2.10.1 through 907.2.10.3.
[F]907.2.l0.1 Carbon monoxide alarms. For new construction,
an approved carbon monoxide alarm shall be installed outside
of each separate sleeping area in the immediate vicinity of
the bedroom in dwelling units within which fuel-fired
appliances are installed and in dwelling units that have
attached garages.
[F]907.2.10.2 Existing dwelling units. Existing dwelling
units within which fuel-fired appliances exist or that have
attached garages shall be equipped with carbon monoxide alarms
by January 1, 2013.
| EXCEPTION: | Owner-occupied Group R-3 residences legally occupied prior to July 1, 2010. |
[]
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 51-50-0909
Section 909 -- Smoke control systems.
909.6.3 Elevator shaft pressurization. Where elevator shaft
pressurization is required to comply with Exception 6 of
Section ((707.14.1)) 708.14.1, the pressurization system shall
comply with and be maintained in accordance with ((707.14.2))
708.14.2.
909.6.3.1 Activation. The elevator shaft pressurization
system shall be activated by a fire alarm system which shall
include smoke detectors or other approved detectors located
near the elevator shaft on each floor as approved by the
building official and fire code official. If the building has
a fire alarm panel, detectors shall be connected to, with
power supplied by, the fire alarm panel.
909.6.3.2 Power system. The power source for the fire alarm
system and the elevator shaft pressurization system shall be
in accordance with Section 909.11.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0909, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-0909, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0909, filed 12/17/03, effective 7/1/04.]
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.
[]
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.
| EXCEPTIONS: | 1. Accessible means of egress are not required in alterations to existing buildings. |
| 2. One accessible means of egress is required from an accessible mezzanine level in accordance with Section 1007.3, 1007.4 or 1007.5. | |
| 3. In assembly areas with sloped or stepped aisles, one accessible means of egress is permitted where the common path of travel is accessible and meets the requirements in Section 1028.8. | |
| 4. In parking garages, accessible means of egress are not required to serve parking areas that do not contain accessible parking spaces. |
| EXCEPTIONS: | 1. Two-way communication systems are not required at the elevator landing where two-way communication is provided within the areas of refuge in accordance with section 1007.6.3. |
| 2. Two-way communication systems are not required on floors provided with exit ramps conforming to provisions of section 1010. |
[]
((1008.1.2 Door swing. Egress doors shall be side-hinged
swinging.
The opening force for interior side-swinging doors without closers shall not exceed a 5-pound (22 N) force. For other side-swinging, sliding, and folding doors, the door latch shall release when subjected to a 15-pound (67 N) force. The door shall be set in motion when subjected to a 30-pound (133 N) force. The door shall swing to a full-open position when subjected to a 15-pound (67 N) force. Forces shall be applied to the latch side.)) 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 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 locks shall be permitted in a Group I-2 Occupancy
where the clinical needs of persons receiving care require
such locking. 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 6 below.
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. 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.
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.
6. Emergency lighting shall be provided at the door.
| EXCEPTION: | Items 1, 2, 3, and 5 shall not apply to doors to areas where persons which because of clinical needs require restraint or containment as part of the function of a Group I-2 mental hospital provided that all clinical staff shall have the keys, codes or other means necessary to operate the locking devices. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1008, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-1008, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1008, filed 12/17/03, effective 7/1/04.]
((1009.12)) 1009.15 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.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1009, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1009, filed 12/17/03, effective 7/1/04.]
1010.1 Scope. The provisions of this section shall apply to
ramps used as a component of a means of egress.
| EXCEPTIONS: | 1. Other than ramps that are part of the accessible routes providing access in accordance with Sections 1108.2 through 1108.2.4 and 1108.2.6, ramped aisles within assembly rooms or spaces shall conform with the provisions in Section 1028.11. |
| 2. Curb ramps shall comply with ICC A117.1. | |
| 3. Vehicle ramps in parking garages for pedestrian exit access shall not be required to comply with Sections 1010.3 through 1010.9 when they are not an accessible route serving accessible parking spaces or other required accessible elements. | |
| 4. In a parking garage where one accessible means of egress serving accessible parking spaces or other accessible elements is provided, a second accessible means of egress serving that area may include a vehicle ramp that does not comply with Sections 1010.4 through 1010.8. |
[]
1014.2.2 Group I-2. ((Habitable rooms or suites in Group I-2
occupancies shall have an exit access door leading directly to
a corridor.
1014.2.2.1 ((Definition. For the purposes of this section, a
suite is defined as a cluster of rooms or spaces sharing
common circulation. Partitions within a suite are not
required to have smoke or fire-resistance-rated construction
unless required by another section of this Code.
1014.2.3)) Exit access doors. Habitable spaces and suites in
Group I-2 occupancies shall have an exit access door leading
directly to a corridor.
| EXCEPTION: | Rooms with exit doors opening directly to the outside at ground level. |
1014.2.2.3 Separation. Suites in Group I-2 Occupancies shall
be separated from other portions of the building by a smoke
partition complying with Section 711. Partitions within
suites are not required to be smoke-resistant or
fire-resistance-rated unless required by another section of
this Code.
1014.2.2.4 Suites ((in)) containing patient sleeping areas.
Patient sleeping areas in Group I-2 Occupancies shall be
permitted to be divided into suites with one intervening room
if one of the following conditions is met:
1. The intervening room within the suite is not used as
an exit access for more than eight patient beds.
2. The arrangement of the suite allows for direct and
constant visual supervision by nursing personnel.
((1014.2.3.1)) 1014.2.2.4.1 Area. Suites of sleeping rooms
shall not exceed 5,000 square feet (465 m2).
((1014.2.3.2)) 1014.2.2.4.2 Exit access. Any patient sleeping
room, or any suite that includes patient sleeping rooms, of
more than 1,000 square feet (93 m2) shall have at least two
exit access doors ((remotely)) located ((from each other)) in
accordance with Section 1015.2.
((1014.2.3.3)) 1014.2.2.4.3 Travel distance. The travel
distance between any point in a suite of sleeping rooms and an
exit access door of that suite shall not exceed 100 feet
(30,480 mm). The travel distance between any point in a Group
I-2 Occupancy patient sleeping room and an exit access door in
that room shall not exceed 50 feet (15,240 mm).
((1014.2.4)) 1014.2.2.5 Suites ((in areas other than)) not
containing patient sleeping areas. Areas other than patient
sleeping areas in Group I-2 Occupancies shall be permitted to
be divided into suites that comply with Sections 1014.2.2.5.1
through 1014.2.2.5.4.
((1014.2.4.1)) 1014.2.2.5.1 Area. Suites of rooms, other than
patient sleeping rooms, shall not exceed 10,000 square feet
(929 m2).
((1014.2.4.2)) 1014.2.2.5.2 Exit access. Any rooms or suite
of rooms, other than patient sleeping rooms, of more than
2,500 square feet (232 m2) shall have at least two exit access
doors ((remotely)) located ((from each other)) in accordance
with Section 1015.2.
((1014.2.4.3)) 1014.2.2.5.3 One intervening room. For rooms
other than patient sleeping rooms, suites of rooms are
permitted to have one intervening room if the travel distance
within the suite to the exit access door is not greater than
100 feet (30,480 mm).
((1014.2.4.4)) 1014.2.2.5.4 Two intervening rooms. For rooms
other than patient sleeping rooms located within a suite, exit
access travel from within the suite shall be permitted through
two intervening rooms where the travel distance to the exit
access door is not greater than 50 feet (15,240 mm).
((1014.2.5 Travel distance. The travel distance between any
point in a Group I-2 Occupancy patient room and an exit access
door in that room shall not exceed 50 feet (15,240 mm).
1014.2.6 Separation. Suites in Group I-2 Occupancies shall be separated from other portions of the building by a smoke partition complying with Section 710.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1014, filed 12/19/06, effective 7/1/07.]
((1015.1 (IFC 1015.1) Exits or exit access doorways from
spaces. Two exits or exit access doorways from any space
shall be provided where one of the following conditions
exists:
1. The occupant load of the space exceeds one of the values in Table 1015.1.
3. Where required by Sections 1015.3, 1015.4, 1015.5, 1015.6 or 1015.6.1.
| (( |
|
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1015, filed 12/19/06, effective 7/1/07.]
((1017.1 Construction. Corridors shall be fire-resistance
rated in accordance with Table 1017.1. The corridor walls
required to be fire-resistance rated shall comply with Section
708 for fire partitions.
| EXCEPTIONS: | 1. Use of a corridor as a source of makeup air for exhaust systems in rooms that open directly onto such corridors, including toilet rooms, bathrooms, dressing rooms, smoking lounges and janitor closets, shall be permitted provided that each such corridor is directly supplied with outdoor air at a rate greater than the rate of makeup air taken from the corridor. |
| 2. Where located within a dwelling unit, the use of corridors for conveying return air shall not be prohibited. | |
| 3. Where located within tenant spaces of one thousand square feet (93 m2) or less in area, utilization of corridors for conveying return air is permitted. | |
| 4. Incidental air movement from pressurized rooms within health care facilities, provided that a corridor is not the primary source of supply or return to the room. | |
| 5. Where such air is part of an engineered smoke control system. | |
| (( |
|
| 6. Air supplied to corridors serving residential occupancies shall not be (( |
|
| 6.1 The (( |
|
| 6.2 The units served by the corridor have conforming ventilation air independent of the air supplied to the corridor; and | |
| 6.3 For other than high-rise buildings, the supply fan will automatically shut off upon activation of corridor smoke detectors which shall be spaced at no more than thirty feet (9,144 mm) on center along the corridor; or | |
| 6.4 For high-rise buildings, corridor smoke detector activation will close required smoke/fire dampers at the supply inlet to the corridor at the floor receiving the alarm. |
| EXCEPTIONS: | 1. Foyers, lobbies or reception rooms constructed as required for corridors shall not be construed as intervening rooms. |
| 2. In Group R-2 boarding homes and residential treatment facilities licensed by Washington state, seating areas shall be allowed to be open to the corridor provided: | |
| 2.1 The seating area is constructed as required for the corridor; | |
| 2.2 The floor is separated into at least two compartments complying with Section 407.4; | |
| 2.3 Each individual seating area does not exceed 150 square feet, excluding the corridor width; | |
| 2.4 The combined total space of seating areas per compartment does not exceed 300 square feet, excluding the corridor width; | |
| 2.5 Combustible furnishings located within the seating area shall be in accordance with the International Fire Code Section 805; and | |
| 2.6 Emergency means of egress lighting is provided as required by Section 1006 to illuminate the area. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1017, filed 12/19/06, effective 7/1/07.]
((1019.1 (IFC 1019.1) Exits from stories. All spaces within
each story shall have access to the minimum number of exits as
specified in Table 1019.1 based on the occupant load of the
story, except as modified in Section 1019.2. For the purposes
of this chapter, occupied roofs shall be provided with exits
as required for stories. The required number of exits from
any story, including basements, shall be maintained until
arrival at grade or the public way.
1. Buildings meeting the limitations of Table 1019.2,
provided the building has not more than one level below the
first story above grade plane.
2. Buildings of Group R-3 Occupancy.
3. Single-level buildings with occupied spaces at the level of exit discharge provided each space complies with Section 1015.1 as a space with one exit or exit access doorway.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1019, filed 12/19/06, effective 7/1/07.]
1106.3 Group I-1 and I-2 outpatient facilities. Ten percent,
but not less than one, of patient and visitor parking spaces
provided to serve Group ((I-1 and)) I-2 outpatient facilities
shall be accessible.
((1106.4 Rehabilitation facilities and outpatient physical
therapy facilities. Twenty percent, but not less than one, of
the portion of patient and visitor parking spaces serving
rehabilitation facilities specializing in treating conditions
that affect mobility and outpatient physical therapy
facilities shall be accessible.))
1106.6 Location. Accessible parking spaces shall be located
on the shortest accessible route of travel from adjacent
parking to an accessible building entrance. In parking
facilities that do not serve a particular building, accessible
parking spaces shall be located on the shortest route to an
accessible pedestrian entrance to the parking facility. Where
buildings have multiple accessible entrances with adjacent
parking, accessible parking spaces shall be dispersed and
located near the accessible entrances. Wherever practical,
the accessible route shall not cross lanes of vehicular
traffic. Where crossing traffic lanes is necessary, the route
shall be designated and marked as a crosswalk.
| EXCEPTION: | 1. In multilevel parking structures, van accessible parking spaces are permitted on one level. |
| 2. Accessible parking spaces shall be permitted to be located in different parking facilities if substantially equivalent or greater accessibility is provided in terms of distance from an accessible entrance or entrances, parking fee and user convenience. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1106, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1106, filed 12/17/03, effective 7/1/04.]
1203.1 General. Buildings shall be provided with natural
ventilation in accordance with Section 1203.4, or mechanical
ventilation in accordance with the International Mechanical
Code ((and the Washington State Ventilation and Indoor Air
Quality 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 ventilating 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. A minimum of 1 inch (25 mm) of airspace 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, with 50 percent of the
required ventilating area provided by ventilators located in
the upper portion of the space to be ventilated at least 3
feet (914 mm) above eave or cornice vents with the balance of
the required ventilation provided by eave or cornice vents.
| EXCEPTIONS: | 1. The minimum required net free ventilating shall be 1/300 of the area of the space ventilated, provided a vapor retarder having a transmission rate not exceeding one perm in accordance with ASTM E 96 is installed on the warm side of the attic insulation and provided 50 percent of the required ventilating area provided by ventilators located in the upper portion of the space to be ventilated is at least 3 feet (914 mm) above eave or cornice vents, with the balance of the required ventilation provided by eave or cornice vents. |
| 2. Unvented attic assemblies (spaces between the ceiling joists of the top story and the roof rafters) shall be permitted if all the following conditions are met: | |
| 2.1 The unvented attic space is completely contained within the building thermal envelope. | |
| 2.2 No interior vapor retarders are installed on the ceiling side (attic floor) of the unvented attic assembly. | |
| 2.3 Where wood shingles or shakes are used, a minimum 1/4 inch (6 mm) vented air space separates the shingles or shakes and the roofing underlayment above the structural sheathing. | |
| 2.4 Any air-impermeable insulation shall be a vapor retarder, or shall have a vapor retarder coating or covering in direct contact with the underside of the insulation. | |
| 2.5 Either items a, b, or c below shall be met, depending on the air permeability of the insulation directly under the structural roof sheathing. | |
| a. Air-impermeable insulation only. Insulation shall be applied in direct contact to the underside of the structural roof sheathing. | |
| b. Air-permeable insulation only. 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 as specified per WA Climate Zone for condensation control. | |
| i. Climate Zone #1 - R-10 minimum rigid board or air-impermeable insulation R-value. | |
| ii. Climate Zone #2 - R-25 minimum rigid board or air-impermeable insulation R-value. | |
| c. Air-impermeable and air-permeable insulation. The air-impermeable insulation shall be applied in direct contact to the underside of the structural roof sheathing as specified per WA Climate Zone for condensation control. The air-permeable insulation shall be installed directly under the air-impermeable insulation. | |
| i. Climate Zone #1 - R-10 minimum rigid board or air-impermeable insulation R-value. | |
| ii. Climate Zone #2 - R-25 minimum rigid board or air-impermeable insulation R-value. |
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.
| EXCEPTION: | Concrete slabs located under garages or other than Group R Occupancies need not comply with this chapter. |
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.
| EXCEPTION: | Aggregate shall not be required if a substitute material or system, with sufficient load bearing characteristics, and having approved capability to provide equal or superior air flow, is installed. |
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.
| EXCEPTION: | A fan for subslab depressurization system includes the following: |
| 1. Soil-gas retarder membrane as specified in Section 1203.6.3.2.4; | |
| 2. Sealing of penetrations and joints as specified in Section 1203.6.3.2.5; | |
| 3. A 3-inch continuous sealed radon pipe shall run from a point within the aggregate under each concrete slab to a point outside the building; | |
| 4. Joints and connections shall be gas tight, and may be of either PVC schedule 40 or ABS schedule of equivalent in wall thickness; | |
| 5. A label of "radon vent" shall be placed on the pipe so as to remain visible to an occupant; | |
| 6. Fan circuit and wiring as specified in Section 1203.6.3.2.7 and a fan. |
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.
| EXCEPTION: | Separate aggregate areas may be considered a single area if a minimum 3-inch diameter connection joining the separate areas is provided for every 30 feet of barrier separating those areas. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1203, filed 12/17/03, effective 7/1/04.]
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).
| EXCEPTIONS: | 1. In one- and two-family dwellings, beams or girders spaced not less than 4 feet (1219 mm) on center and projecting not more than 6 inches (152 mm) below the required ceiling height. |
| 2. If any room in a building has a sloped ceiling, the prescribed ceiling height for the room is required in one-half the area thereof. Any portion of the room measuring less than 5 feet (1524 mm) from the finished floor to the ceiling shall not be included in any computation of the minimum area thereof. | |
| 3. Mezzanines constructed in accordance with Section 505.1. | |
| (( |
| EXCEPTION: | (( |
[Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-1208, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1208, filed 12/17/03, effective 7/1/04.]
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 1405.3. 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 of 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.
| EXCEPTIONS: | 1. A weather-resistant exterior wall envelope shall not be required over concrete or masonry walls designed in accordance with Chapters 19 and 21, respectively. |
| 2. Compliance with the requirements for a means of drainage, and the requirements of Sections 1404.2 and 1405.3, shall not be required for an exterior wall envelope that has been demonstrated through testing to resist wind-driven rain, including joints, penetrations and intersections with dissimilar materials, in accordance with ASTM E 331 under the following conditions: | |
| 2.1 Exterior wall envelope test assemblies shall include at least one opening, one control joint, one wall/eave interface and one wall sill. All tested openings and penetrations shall be representative of the intended end-use configuration. | |
| 2.2 Exterior wall envelope test assemblies shall be at least 4 feet by 8 feet (1219 mm by 2438 mm) in size. | |
| 2.3 Exterior wall envelope assemblies shall be tested at a minimum differential pressure of 6.24 pounds per square foot (psf) (0.297 kN/m2). | |
| 2.4 Exterior wall envelope assemblies shall be subjected to a minimum test exposure duration of 2 hours. | |
| The exterior wall envelope design shall be considered to resist wind-driven rain where the results of testing indicate that water did not penetrate control joints in the exterior wall envelope, joints at the perimeter of openings or intersections of terminations with dissimilar materials. |
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-1403, filed 12/18/07, effective 4/1/08.]
((1405.5.2)) 1405.6.2 Seismic requirements. Anchored masonry
veneer located in Seismic Design Category C, D, E, or F shall
conform to the requirements of Section 6.2.2.10((, except)) of
TMS 402/ACI 530/ASCE 5. Anchored masonry veneer located in
Seismic Design Category D, for occupancy category III and IV,
shall also conform to the requirements of Section
((6.2.2.10.3.2, of ACI 530/ASCE 5/)) 6.2.2.10.3.3 of TMS
402/ACI 530/ASCE 5.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1405, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-1405, filed 12/2/04, effective 7/1/05.]
((BALCONY, EXTERIOR. This definition is not adopted.
DECK. This definition is not adopted.)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1602, filed 12/19/06, effective 7/1/07.]
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-1607, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1607, filed 12/19/06, effective 7/1/07.]
1609.1.1 Determination of wind loads. Wind loads on every
building or structure shall be determined in accordance with
Chapter 6 of ASCE 7 or provisions of the alternate all-heights
method in Section 1609.6. The type of opening protection
required, the basic wind speed and the exposure category for a
site is permitted to be determined in accordance with Section
1609 or ASCE 7. Wind shall be assumed to come from any
horizontal direction and wind pressures shall be assumed to
act normal to the surface considered.
| EXCEPTIONS: | 1. Subject to the limitations of Section 1609.1.1.1, the provisions of ICC 600 shall be permitted for applicable Group R-2 and R-3 buildings. |
| 2. Subject to the limitations of Section 1609.1.1.1, residential structures using the provisions of the AF&PA WFCM. | |
| 3. Subject to the limitations of Section 1609.1.1.1, residential structures using the provisions of AISI S230. | |
| 4. Designs using NAAMM FP 1001. | |
| 5. Designs using TIA-222 for antenna-supporting structures and antennas. In section 2.6.6.2, the extent of Topographic Category 2, escarpments, shall extend 16 times the height of the escarpment. | |
| 6. Wind tunnel test in accordance with Section 6.6 of ASCE 7, subject to the limitations in Section 1609.1.1.2. |
[]
((1613.7 Modification of ASCE 7. ASCE 7-05 including
Supplement #1 is modified according to this section.
1613.7.1 The following equations found in Section 12.8 and
Section 15.4 expressing limitations for the seismic response
coefficient Cs shall be defined as follows:
| (( |
|
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-1613, filed 12/18/07, effective 4/1/08.]
((1714.5 Exterior window and door assemblies. The design
pressure rating of exterior windows and doors in buildings
shall be determined in accordance with Section 1714.5.1 or
1714.5.2.
| EXCEPTIONS: | 1. Structural wind load design pressures for window units smaller than the size tested in accordance with Section 1715.5.1 or 1715.5.2 shall be permitted to be higher than the design value of the tested unit provided such higher pressures are determined by accepted engineering analysis. All components of the small unit shall be the same as the tested unit. Where such calculated design pressures are used, they shall be validated by an additional test of the window unit having the highest allowable design pressure. |
| 2. Custom exterior windows and doors manufactured by a small business shall be exempt from all testing requirements in Section 1715 of the International Building Code provided they meet the applicable provisions of Chapter 24 of the International Building Code. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1714, filed 12/19/06, effective 7/1/07.]
2104.1 Masonry construction. Masonry construction shall
comply with the requirements of Sections 2104.1.1 through
2104.6 and with TMS 602/ACI 530.1/ASCE 6 except as modified by
Sections 2104.5 and 2104.6.
2104.5 TMS 602/ACI 530.1/ASCE 6, Article 3.5 D, grout lift
heights. Modify items 1.b, 1.c, and 2.b of Article 3.5 D as
follows:
3.5 D.1.b When the conditions of Articles 3.5 D.1.a.i and 3.5 D.1.a.ii are met but there are intermediate bond beams within the grout pour, limit the grout lift height to the bottom of the lowest bond beam that is more than 5.33 ft. (1.63 m) above the bottom of the lift, but do not exceed a grout lift height of 12.67 ft. (3.86 m).
3.5 D.1.c When the conditions of Article 3.5 D.1.a.i or Article 3.5 D.1.a.ii are not met, place grout in lifts not exceeding 5.33 ft. (1.63 m).
3.5 D.2.b When placed in masonry that has not cured for at least 4 hours, place in lifts not exceeding 5.33 ft. (1.63 m).
2104.6 TMS 602/ACI 530.1/ASCE 6, Article 3.2F, cleanouts.
Modify the first sentence of Article 3.2F as follows:
Provide cleanouts in the bottom course of masonry for each grout pour when the grout pour height exceeds 5.33 ft. (1.63 m).
[]
((2106.1.1 Basic seismic-force-resisting system. Buildings
relying on masonry shear walls as part of the basic
seismic-force-resisting system shall comply with Section
1.14.2.2 of ACI 530/ASCE 5/TMS 402 or with Section 2106.1.1.1,
2106.1.1.2, or 2106.1.1.3.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-2106, filed 12/19/06, effective 7/1/07.]
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 of TMS 402/ACI
530/ASCE 5 except as modified by Sections 2107.3 through
2107.5.
2107.2 Load combinations. Structures and portions thereof
shall be designed to resist the most critical effects
resulting from the load combinations of Section 1605.3. When
using the alternative load combinations of Section 1605.3.2
that include wind or seismic loads, allowable stresses are
permitted to be increased by one-third.
2107.6 TMS 402/ACI 530/ASCE 5, Section 1.16.1 anchor bolts.
Modify the second paragraph of Section 1.16.1 as follows:
Anchor bolts placed in the top of grouted cells and bond beams
shall be positioned to maintain a minimum of 1/4 inch (6.4 mm)
of fine grout between the bolts and the masonry unit or 1/2
inch (12.7 mm) of coarse grout between the bolts and the
masonry unit. Anchor bolts placed in drilled holes in the
face shells of hollow masonry units shall be permitted to
contact the masonry unit where the bolt passes through the
face shell, but the portion of the bolt that is within the
grouted cell shall be positioned to maintain a minimum of 1/4
inch (6.4 mm) of fine grout between the head or bent leg of
the bolt and the masonry unit or 1/2 inch (12.7 mm) of coarse
grout between the head or bent leg of the bolt and the masonry
unit.
[]
2108.2 ACI 530/ASCE 5/TMS 402, Section 3.1.6. Modify Section
3.1.6 as follows:
3.1.6 Headed and bent-bar anchor bolts. All embedded bolts
shall be grouted in place, except that 1/4 inch (6.4 mm)
diameter bolts are permitted to be placed in bed joints that
are at least 1/2 inch (12.7 mm) in thickness.
2108.4 TMS 402/ACI 530/ASCE 5, Section 1.16.1 anchor bolts.
Modify the second paragraph of Section 1.16.1 as follows:
Anchor bolts placed in the top of grouted cells and bond beams
shall be positioned to maintain a minimum of 1/4 inch (6.4 mm)
of fine grout between the bolts and the masonry unit or 1/2
inch (12.7 mm) of coarse grout between the bolts and the
masonry unit. Anchor bolts placed in drilled holes in the
face shells of hollow masonry units shall be permitted to
contact the masonry unit where the bolt passes through the
face shell, but the portion of the bolt that is within the
grouted cell shall be positioned to maintain a minimum of 1/4
inch (6.4 mm) of fine grout between the head or bent leg of
the bolt and the masonry unit or 1/2 inch (12.7 mm) of coarse
grout between the head or bent leg of the bolt and the masonry
unit.
[Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-2108, filed 12/2/04, effective 7/1/05.]
2111.7 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.
| EXCEPTION: | Fireplaces with gas logs shall be installed in accordance with the International Mechanical Code Section 901, except that the standards for liquefied petroleum gas installations shall be NFPA 58 (Liquefied Petroleum Gas Code) and NFPA 54 (National Fuel Gas Code). |
| EXCEPTION: | Washington certified fireplaces shall be installed with the combustion air systems necessary for their safe and efficient combustion and specified by the manufacturer in accordance with the Washington State Building Standard 31-2 (WAC 51-50-31200) and IBC Section 2114 (WAC 51-50-2114). |
2111.7.1 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.
[]
Section 2405 -- Sloped glazing and skylights.
2405.3 Screening. Where used in monolithic glazing systems,
heat-strengthened glass and fully tempered glass shall have
screens installed below the glazing material. The screens and
their fastenings shall:
(1) Be capable of supporting twice the weight of the glazing;
(2) Be firmly and substantially fastened to the framing members; and
(3) Be installed within 4 inches (102 mm) of the glass. The screens shall be constructed of a noncombustible material not thinner than No. 12 B&S gage (0.0808 inch) with mesh not larger than 1 inch by 1 inch (25 mm by 25 mm). In a corrosive atmosphere, structurally equivalent noncorrosive screen materials shall be used. Heat strengthened glass, fully tempered glass and wired glass, when used in multiple-layer glazing systems as the bottom glass layer over the walking surface, shall be equipped with screening that conforms to the requirements for monolithic glazing systems.
| EXCEPTIONS: | In monolithic and multiple-layer sloped glazing systems, the following applies: |
| 1. Fully tempered glass installed without protective screens where glazed between intervening floors at a slope of 30 degrees (0.52 rad) or less from the vertical plane shall have the highest point of the glass 10 feet (3048 mm) or less above the walking surface. | |
| 2. Screens are not required below any glazing material, including annealed glass, where the walking surface below the glazing material is permanently protected from the risk of falling glass or the area below the glazing material is not a walking surface. | |
| 3. Any glazing material, including annealed glass, is permitted to be installed without screens in the sloped glazing systems of commercial or detached noncombustible greenhouses used exclusively for growing plants and not open to the public, provided that the height of the greenhouse at the ridge does not exceed 30 feet (9144 mm) above grade. | |
| 4. Screens shall not be required within individual dwelling units in Groups R-2, R-3 and R-4 where fully tempered glass is used as single glazing or as both panes in an insulating glass unit, and the following conditions are met: | |
| 4.1. Each pane of the glass is 16 square feet (1.5 m2) or less in area. | |
| 4.2. The highest point of the glass is 12 feet (3658 mm) or less above any walking surface or other accessible area. |
|
| 4.3. The glass thickness is 3/16 inch (4.8 mm) or less. | |
| 5. Screens shall not be required for laminated glass with a 15 mil (0.38 mm) polyvinyl butyral (or equivalent) interlayer within the following limits: | |
| 5.1. Each pane of glass is 16 square feet (1.5 m2) or less in area. | |
| 5.2. The highest point of the glass is 12 feet (3658 mm) or less above a walking surface or other accessible area. |
[]
SECTION 2901 -- ((PLUMBING CODE)) GENERAL.
((Plumbing systems shall comply with the Plumbing Code.))
2901.1 Scope. The provisions of this chapter shall apply to
the number of plumbing fixtures and sanitation facilities to
be provided in an occupancy regulated by this Code.
2901.2 Minimum requirements. Plumbing fixtures and sanitation
facilities shall be provided in the minimum number shown in
Table 2902.1 and in this chapter. Where the proposed
occupancy is not listed in Table 2902.1, the building official
shall determine the fixture and facility requirements based on
the occupancy which most nearly resembles the proposed
occupancy. The number of occupants used for determining
minimum fixtures and facilities shall be computed at the rate
of one occupant per unit of net floor area as prescribed in
Table 2902.1.
Plumbing fixtures need not be provided for unoccupied buildings or facilities.
SECTION 2902 -- ((GENERAL)) FIXTURES.
2902.1 Number of fixtures.
((2902.1.1 Requirements. Plumbing fixtures shall be provided
in the minimum number shown in Table 2902.1 and in this
chapter. Where the proposed occupancy is not listed in Table
2902.1, the building official shall determine fixture
requirements based on the occupancy which most nearly
resembles the intended occupancy.
Plumbing fixtures need not be provided for unoccupied buildings or facilities.
2902.1.2)) 2902.1.1 Private offices. Fixtures only accessible
to private offices shall not be counted to determine
compliance with this section.
((2902.1.3)) 2902.1.2 Occupancy load distribution. The
occupant load shall be divided equally between the sexes,
unless data approved by the building official indicates a
different distribution of the sexes.
((2902.1.4)) 2902.1.3 Food preparation areas. In food
preparation, serving and related storage areas, additional
fixture requirements may be dictated by health codes.
((2902.1.5)) 2902.1.4 Other requirements. For other
requirements for plumbing facilities, see Section 1210 and
Chapter 11.
2902.2 Access to fixtures.
2902.2.1 Location. Plumbing fixtures shall be located in each
building or conveniently in a building adjacent thereto on the
same property.
2902.2.1.1 Toilet rooms. 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.
2902.2.2 Multiple tenants. Access to toilets serving multiple
tenants shall be through a common use area and not through an
area controlled by a tenant.
2902.2.3 Multistory buildings. Required fixtures shall not be
located more than one vertical story above or below the area
served.
SECTION 2903 -- FACILITIES.
((2902.3 Separate)) 2903.3 Facilities.
((2902.3.1)) 2903.3.1 Requirements. Separate toilet
facilities shall be provided for each sex.
| EXCEPTION: | In occupancies serving 15 or fewer persons, one toilet facility designed for use by no more than one person at a time shall be permitted for use by both sexes. |
((2902.4)) 2903.4 Pay facilities. Required facilities shall
be free of charge. Where pay facilities are installed, they
shall be in addition to the minimum required facilities.
((2902.5)) 2903.5 is not adopted.
((2902.6 is not adopted.))
SECTION ((2903)) 2904 -- SPECIAL PROVISIONS.
((2903.1)) 2904.1 Dwelling units. Dwelling units shall be
provided with a kitchen sink.
((2903.2)) 2904.2 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).
((2903.3)) 2904.3 Water. Each required sink, lavatory,
bathtub and shower stall shall be equipped with hot and cold
running water necessary for its normal operation.
((2903.4)) 2904.4 Drinking fountains.
((2903.4.1)) 2904.4.1 Number. Occupant loads over 30 shall
have one drinking fountain for the first 150 occupants, then
one per each additional 500 occupants.
| EXCEPTIONS: | 1. Sporting facilities with concessions serving drinks shall have one drinking fountain for each 1000 occupants. |
| 2. A drinking fountain need not be provided in a drinking or dining establishment. |
((2903.4.3)) 2904.4.3 Penal institutions. Penal institutions
shall have one drinking fountain on each cell block floor and
one on each exercise floor.
((2903.4.4)) 2904.4.4 Location. Drinking fountains shall not
be located in toilet rooms.
| TYPE OF BUILDING OR OCCUPANCY8 | WATER CLOSETS (fixtures per person) |
LAVATORIES5 (fixtures per person) |
BATHTUB OR SHOWER (fixtures per person) |
||
| MALE3 | FEMALE | MALE | FEMALE | ||
| For the occupancies listed below, use 30 square feet (2.79 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Group A Assembly places -- |
|||||
| Conference rooms, dining rooms, drinking establishments, exhibit rooms, gymnasiums, lounges, stages and similar uses including restaurants classified as Group B Occupancies | 1:1-25 | 1:1-25 | One per 2 water closets | ||
| 2:26-75 | 2:26-75 | ||||
| 3:76-125 | 3:76-125 | ||||
| 4:126-200 | 4:126-200 | ||||
| 5:201-300 | 5:201-300 | ||||
| 6:301-400 | 6:301-400 | ||||
| Over 400, add one fixture for each additional 200 males or 150 females | |||||
| For the assembly occupancies listed below, use the number of fixed seating or, where no fixed seating is provided, use 15 square feet (1.39 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Assembly places -- 9 Theaters, auditoriums, convention halls, dance floors, lodge rooms, casinos, and such places which have limited time for fixture use (intermissions) |
1:1-100 | One per 25 | 1:1-200 | 1:1-200 | |
| 2:101-200 | Up to 400 | 2:201-400 | 2:201-400 | ||
| 3:201-400 | 3:401-750 | 3:401-750 | |||
| Over 400, add one fixture for each additional 250 males or 50 females | Over 750, add one fixture for each additional 500 persons | ||||
| Assembly places -- Stadiums, arena and other sporting facilities where fixture use is not limited to intermissions |
1:1-100 | One per 50 | 1:1-200 | 1:1-200 | |
| 2:101-200 | Up to 400 | 2:201-400 | 2:201-400 | ||
| 3:201-400 | 3:401-750 | 3:401-750 | |||
| Over 400, add one fixture for each additional 300 males or 100 females | Over 750, add one fixture for each additional 500 persons | ||||
| For the assembly occupancies listed below, use the number of fixed seating or, where no fixed seating is provided, use 30 square feet (2.79 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Worship places | |||||
| Principal assembly area | One per 150 | One per 75 | One per 2 water closets | ||
| Educational & activity unit | One per 125 | One per 75 | One per 2 water closets | ||
| For the occupancies listed below, use 200 square feet (18.58 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Group B and other clerical or administrative employee accessory use |
1:1-15 | 1:1-15 | One per 2 water closets | ||
| 2:16-35 | 2:16-35 | ||||
| 3:36-55 | 3:36-55 | ||||
| Over 55, add one for each additional 50 persons | |||||
| For the occupancies listed below, use 100 square feet ( 9.3 m2) per student for the minimum number of plumbing fixtures. | |||||
| Group E | 1:1-15 | 1:1-15 | One per 2 water closets | ||
| Schools - for staff use | 2:16-35 | 2:16-35 | |||
| All schools | 3:36-55 | 3:36-55 | |||
| (One staff per 20 students) | Over 55, add one fixture for each additional 40 persons | ||||
| Schools - for student use | 1:1-20 | 1:1-20 | 1:1-20 | 1:1-20 | |
| Day care | 2:21-50 | 2:21-50 | 2:21-50 | 2:21-50 | |
| Over 50, add one fixture for each additional 50 persons | Over 50, add one fixture for each additional 50 persons | ||||
| Elementary | One per 30 | One per 25 | One per 2 water closets | ||
| Secondary | One per 40 | One per 30 | One per 2 water closets | ||
| For the occupancies listed below, use 50 square feet (4.65 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Education facilities other than Group E | |||||
| Others (colleges, universities, adult centers, etc.) | One per 40 | One per 25 | One per 2 water closets | ||
| For the occupancies listed below, use 2,000 square feet (185.8 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Group F and Group H | 1:1-10 | 1:1-10 | One per 2 water closets | ||
| Workshop, foundries and similar establishments, and hazardous occupancies | 2:11-25 | 2:11-25 | One shower for each 15 persons exposed to excessive heat or to skin contamination with irritating materials | ||
| 3:26-50 | 3:26-50 | ||||
| 4:51-75 | 4:51-75 | ||||
| 5:76-100 | 5:76-100 | ||||
| Over 100, add one fixture for each additional 30 persons | |||||
| For the occupancies listed below, use the designated application and 200 square feet (18.58 m2) per occupant of the general use area for the minimum number of plumbing fixtures. | |||||
| Group I7 | |||||
| Hospital waiting rooms | One per room (usable by either sex) | One per room | |||
| Hospital general use areas | 1:1-15 | 1:1-15 | One per 2 water closets | ||
| 2:16-35 | 3:16-35 | ||||
| 3:36-55 | 3:36-55 | ||||
| Over 55, add one fixture for each additional 40 persons | |||||
| Hospital patient rooms: | |||||
| Single Bed | One adjacent to and directly accessible from | One per toilet room | One per toilet room | ||
| Isolation | One adjacent to and directly accessible from | One per toilet room | One per toilet room | ||
| Multibed | One per 4 patients | One per 4 patients | One per 8 patients | ||
| Long-term | One per 4 patients | One per 4 patients | One per 15 patients | ||
| Jails and reformatories | |||||
| Cell | One per cell | One per cell | |||
| Exercise room | One per exercise room | One per exercise room | |||
| Other institutions (on each occupied floor) | One per 25 | One per 25 | One per 2 water closets | One per 8 | |
| For the occupancies listed below, use 200 square feet (18.58 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Group M | |||||
| Retail or wholesale stores | 1:1-50 | 1:1-50 | One per 2 water closets | ||
| 2:51-100 | 2:51-100 | ||||
| 3:101-400 | 3:101-200 | ||||
| 4:201-300 | |||||
| 5:301-400 | |||||
| Over 400, add one fixture for each additional 300 males or 150 females | |||||
| For Group R Occupancies containing dwelling units or guest rooms, use the table below. For dormitories, use 200 square feet (18.58 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Group R | |||||
| Dwelling units | One per dwelling unit | One per dwelling unit | One per dwelling unit | ||
| Hotel, motel, and boarding house guest rooms | One per guest room | One per guest room | One per guest room | ||
| Boarding homes licensed by the department of social and health services | One per 8 | One per 8 | One per 8 | One per 8 | One per 12 |
| Dormitories | One per 10 | One per 8 | One per 12 | One per 12 | One per 8 |
| Over 10, add one fixture for each additional 25 males and over 8, add one for each additional 20 females | Over 12, add one fixture for each additional 20 males and one for each additional 15 females | For females, add one additional unit per each additional 30. Over 150 persons, add one additional unit per each additional 20 persons | |||
| For the occupancies listed below, use 5,000 square feet (464.5 m2) per occupant for the minimum number of plumbing fixtures. | |||||
| Group S | 1:1-10 | 1:1-10 | One per 40 occupants of each sex | One shower for each 15 persons exposed to excessive heat or to skin contamination with poisonous, infectious or irritating materials | |
| Warehouses | 2:11-25 | 2:11-25 | |||
| 3:26-50 | 3:26-50 | ||||
| 4:51-75 | 4:51-75 | ||||
| 5:76-100 | 5:76-100 | ||||
| Over 100, add one for each 30 persons | |||||
| 1The figures shown are based on one fixture being the minimum required for the number of persons indicated or any fraction thereof. | |
| 2For occupancies not shown, see Section 2902.1.1. | |
| 3Where 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. | |
| 4For drinking fountains, see Section 2903.4. | |
| 5Twenty-four inches (610 mm) of wash sink or 18 inches (457 mm) of a circular basin, when provided with water outlets for such space, shall be considered equivalent to one lavatory. | |
| 6For when a facility may be usable by either sex, see Section 2902.3.1. | |
| 7See WAC 246-320 for definitions, other fixtures and equipment for hospitals. | |
| 8When a space is accessory to or included as a part of a different occupancy group per Chapter 3, the area per occupant for the minimum plumbing fixture number is to be determined by its own specific use or purpose, not by that of the building's occupancy group. | |
| 9In multiplex movie theaters, where shows are scheduled at different times, the number of occupants for toilet fixture use may be based upon one-half (50%) of the total in all the auditoriums, but no less than the number in the largest auditorium. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-2900, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-2900, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-2900, filed 12/17/03, effective 7/1/04.]
((3001.1 Scope. This chapter governs the design,
construction, installation, alteration and repair of elevators
and conveying systems and their components.
3001.2 Referenced standards. Except as otherwise provided for
in this code, the design, construction, installation,
alteration, repair and maintenance of elevators and conveying
systems and their components shall conform to ASME A17.1, ASME
A90.1, ASME B20.1, ALI ALCTV, and ASCE 24 for construction in
flood hazard areas established in Section 1612.3.
3001.3 Accessibility. Passenger elevators required to be
accessible by Chapter 11 shall conform to ICC A117.1.
3001.4 Change in use. A change in use of an elevator from
freight to passenger, passenger to freight, or from one
freight class to another freight class shall comply with Part
XII of ASME A17.1.))
Section 3002 -- Hoistway enclosures.
3002.4 Elevator car to accommodate ambulance stretcher. In
buildings four stories in height or more, and in buildings
which are required to have an elevator and contain Group R-1,
R-2 or I Occupancies on a level other than the exit discharge
level, at least one elevator shall be provided for fire
department emergency access to all floors. Such elevator car
shall be of such a size and arrangement to accommodate a
24-inch by 84-inch (610 mm by 2134 mm) ambulance stretcher
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)
high and shall be placed inside on both sides of the hoistway
door frame.
[Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-3001, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-3001, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3001, filed 12/17/03, effective 7/1/04.]
3108.1 General. Towers shall be designed and constructed in
accordance with the provisions of TIA-222. In Section
2.6.6.2, the extent of Topographic Category 2, escarpments,
shall extend 16 times the height of the escarpment. Towers
shall be designed for seismic loads. The exceptions to the
requirement of seismic design listed in Section 2.7.3 shall
not apply. Class I structures per Table 2-1 of the standard
may be exempted from seismic design, if approved by the
building official.
| EXCEPTION: | Single free-standing poles used to support antennas not greater than 75 feet (22,860 mm), measured from the top of the pole to grade, shall not be required to be noncombustible. |
[]
3401.5 Alternative compliance. Work performed in accordance
with the 2009 International Existing Building Code as amended
in WAC 51-50-480000 shall be deemed to comply with the
provisions of this chapter.
[]
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.
| EXCEPTIONS: | 1. An existing stairway shall not be required to comply with the requirements of Section 1009 where the existing space and construction does not allow a reduction in pitch or slope. |
| 2. Handrails otherwise required to comply with Section 1009.10 shall not be required to comply with the requirements of Section 1012.5 regarding full extension of the handrails where such extensions would be hazardous due to plan configuration. | |
| 3. In buildings considered existing structures on July 1, 2010, dwelling units shall be permitted to have a ceiling height of not less than 7 feet (2134 mm). |
[]
((3408.1)) 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.
| EXCEPTION: | Group R-3 buildings or structures are not required to comply if: |
| 1. The original occupancy classification is not changed; and | |
| 2. The original building is not substantially remodeled or rehabilitated. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3408, filed 12/17/03, effective 7/1/04.]
((3409.7)) 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.
| EXCEPTIONS: | 1. The costs of providing the accessible route are not required to exceed 20 percent of the costs of the alteration affecting the area of primary function. |
| 2. This provision does not apply to alterations limited solely to windows, hardware, operating controls, electrical outlets and signs. | |
| 3. This provision does not apply to alterations limited solely to mechanical systems, electrical systems, installation or alteration of fire protection systems and abatement of hazardous materials. | |
| 4. This provision does not apply to alterations undertaken for the primary purpose of increasing the accessibility of an existing building, facility or element. |
3411.8.11 Toilet rooms. Where it is technically infeasible to
alter existing toilet and bathing facilities to be accessible,
an accessible unisex toilet or bathing facility is permitted. The unisex facility shall be located on the same floor and in
the same area as the existing facility. The number of toilet
facilities and water closets required by the State Building
Code is permitted to be reduced by one, in order to provide
accessible features.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-3409, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3409, filed 12/17/03, effective 7/1/04.]
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480000, filed 12/19/06, effective 7/1/07.]
INTERNATIONAL EXISTING BUILDING CODE((2006)) 2009 EDITION
AMENDATORY SECTION(Amending WSR 07-01-091, filed 12/19/06,
effective 7/1/07)
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
((International)) State Building((, Fire and Mechanical Codes
(as applicable))) 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 the International Property Maintenance 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.
((101.5 Compliance methods. The repair, alteration, change of
occupancy, addition or relocation of all existing buildings
shall comply with one of the methods listed in Sections
101.5.1 through 101.5.3 as selected by the applicant.
Application of a method shall be the sole basis for assessing
the compliance of work performed under a single permit unless
otherwise approved by the code official. Sections 101.5.1
through 101.5.3 shall not be applied in combination with each
other.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480101, filed 12/19/06, effective 7/1/07.]
102.4.1 Fire prevention. The provisions of the International
Fire Code shall apply to matters affecting or relating to
structures, processes and premises ((from)) regarding: The
hazard of fire and explosion arising from the storage,
handling or use of structures, materials or devices; ((from))
conditions hazardous to life, property or public welfare in
the occupancy of structures or premises; and ((from)) 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.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480102, filed 12/19/06, effective 7/1/07.]
((302.1 Existing buildings or structures. Additions or
alterations to any building or structure shall comply with the
requirements of the International Building Code for new
construction except as specifically provided in this code. Additions or alterations shall not be made to an existing
building or structure that will cause the existing building or
structure to be in violation of any provisions of the
International Building Code. An existing building plus
additions shall comply with the height and area provisions of
the International Building Code. Portions of the structure
not altered and not affected by the alteration are not
required to comply with the code requirements for a new
structure.)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480302, filed 12/19/06, effective 7/1/07.]
(([B] 305.1 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 occupancy. 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 9
may be used to demonstrate the relative fire and life risk of
the existing and the new proposed uses.)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480305, filed 12/19/06, effective 7/1/07.]
[B] 307.1 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 occupancy. 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 9
may be used to demonstrate the relative fire and life risk of
the existing and the new proposed uses.
[]
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 51-50-480506
((Section 506 -- Structural.)) Reserved.
((506.1.1.2 IBC level seismic forces. When seismic forces are
required to meet the International Building Code level, they
shall be one of the following:
1. One hundred percent of the values in the International Building Code. The R-factor used for analysis in accordance with Chapter 16 of the International Building Code shall be the R-factor specified for structural systems classified as "ordinary" in accordance with Table 12.2-1 of ASCE 7, unless it can be demonstrated that the structural system satisfies the proportioning and detailing requirements for systems classified as "intermediate" or "special."
2. Those associated with the BSE-1 and BSE-2 Earthquake Hazard Levels defined in ASCE 41. Where ASCE 41 is used, the corresponding performance levels shall be those shown in Table 506.1.1.2.
TABLE 506.1.1.2
ASCE 41 AND ASCE 31 PERFORMANCE LEVELS
1. Seventy-five percent of the forces prescribed in the International Building Code. The R-factor used for analysis in accordance with Chapter 16 of the International Building Code shall be the R-factor as specified in Section 506.1.1.2 of this code.
2. In accordance with the applicable chapters in Appendix A of this code as specified in Items 2.1 through 2.5 below. Structures or portions of structures that comply with the requirements of the applicable chapter in Appendix A shall be deemed to comply with the requirements for reduced International Building Code force levels.
2.1. The seismic evaluation and design of unreinforced masonry bearing wall buildings in Occupancy Category I or II are permitted to be based on the procedures specified in Appendix Chapter A1.
2.2. Seismic evaluation and design of the wall anchorage system in reinforced concrete and reinforced masonry wall buildings with flexible diaphragms in Occupancy Category I or II are permitted to be based on the procedures specified in Appendix Chapter A2.
2.3. Seismic evaluation and design of cripple walls and sill plate anchorage in residential buildings of light-frame wood construction in Occupancy Category I or II are permitted to be based on the procedures specified in Appendix Chapter A3.
2.4. Seismic evaluation and design of soft, weak or open-front wall conditions in multiunit residential buildings of wood construction in Occupancy Category I or II are permitted to be based on the procedures specified in Appendix Chapter A4.
2.5. Seismic evaluation and design of concrete buildings and concrete with masonry infill buildings in all occupancy categories are permitted to be based on the procedures specified in Appendix Chapter A5.
3. In accordance with ASCE 31 based on the applicable performance level as shown in Table 506.1.1.2.
4. Those associated with the BSE-1 Earthquake Hazard Level defined in ASCE 41 and the performance level as shown in Table 506.1.1.2. Where ASCE 41 is used, the design spectral response acceleration parameters SXS and SX1 shall not be taken less than seventy-five percent of the respective design spectral response acceleration parameters SDS and SD1 defined by the International Building Code and its reference standards.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480506, filed 12/19/06, effective 7/1/07.]
607.1 Minimum requirements. Level 1 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).
[]
711.1 Minimum requirements. Level 2 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).
[]
((807.5.1)) 807.4.1 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
((506.1.1.3)) 101.5.4.2. This seismic evaluation report shall
not be required for buildings in compliance with the benchmark
building provisions of ASCE 31, Section 3.2.
((807.5.2)) 807.4.2 Substantial structural alteration. Any
building or structure undergoing substantial improvement shall
have an evaluation and analysis to demonstrate that the
altered building or structure complies with the International
Building Code for wind loading and with reduced International
Building Code level seismic forces as specified in Section
((507.1.1.3)) 101.5.4.2 for seismic loading. For seismic
considerations, the analysis shall be based on one of the
procedures specified in Section ((507.1.1.1)) 101.5.4.
((807.5.3)) 807.4.3 Limited structural alteration. Where any
building or structure undergoes less than substantial
improvement, the evaluation and analysis shall demonstrate
that the altered building or structure complies with the loads
applicable at the time the building was constructed.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480807, filed 12/19/06, effective 7/1/07.]
808.1 Minimum requirements. Level 3 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).
[]
1101.1 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.
((1101.2 Report. A historic building undergoing repair,
alteration, or change of occupancy shall be investigated and
evaluated. If it is intended that the building meet the
requirements of this chapter, a written report shall be
prepared and filed with the code official by a registered
design professional when such a report is necessary in the
opinion of the code official. Such report shall be in
accordance with Chapter 1 and shall identify each required
safety feature that is in compliance with this chapter and
where compliance with other chapters of these provisions would
be damaging to the contributing historic features. In Seismic
Design Category D or higher, a structural evaluation
describing, at minimum, a complete load path and other
earthquake-resistant features shall be prepared. In addition,
the report shall describe each feature that is not in
compliance with these provisions and shall demonstrate how the
intent of these provisions is complied with in providing an
equivalent level of safety.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481101, filed 12/19/06, effective 7/1/07.]
((1102.4 Chapter 5 compliance. Historic buildings undergoing
repairs shall comply with all of the applicable requirements
of Chapter 5, except as specifically permitted in this
chapter.
1102.5 Replacement. Replacement of existing or missing
features using original materials shall be permitted. Partial
replacement for repairs that match the original in
configuration, height, and size shall be permitted. Such
replacements shall not be required to meet the materials and
methods requirements of Section 501.2.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481102, filed 12/19/06, effective 7/1/07.]
1104.1 Accessibility requirements. The provisions of Sections
605 and 706 shall apply to buildings and facilities designated
as historic structures that undergo alterations, unless
technically infeasible. Where compliance with the
requirements for accessible routes, ramps, entrances, or
toilet facilities would threaten or destroy the historic
significance of the building or facility, as determined by the
professional responsible for the historical documentation of
the project, the alternative requirements of Sections 1104.1.1
through 1104.1.4 for that element shall be permitted.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481104, filed 12/19/06, effective 7/1/07.]
((1106.1 General. Historic buildings shall comply with the
applicable structural provisions for the work as classified in
Chapter 5.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481106, filed 12/19/06, effective 7/1/07.]
1201.1 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.
| EXCEPTION: | Group R-3 buildings or structures are not required to comply if: |
| 1. The original occupancy classification is not changed; and | |
| 2. The original building is not substantially remodeled or rehabilitated. |
SECTION 1202--REQUIREMENTS. This section not adopted.
[]
((Section 1301 General.
1301.4.1 Structural analysis. The owner shall have a
structural analysis of the existing building made to determine
adequacy of structural systems for the proposed alteration,
addition, or change of occupancy. The analysis shall
demonstrate that the altered building or structure complies
with the requirements of Chapter 16 of the International
Building Code.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481301, filed 12/19/06, effective 7/1/07.]
| (( |
|
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481500, filed 12/19/06, effective 7/1/07.]
The following sections of the Washington Administrative
Code are decodified as follows:
| Old WAC Number | New WAC Number |
| 51-50-0707 | 51-50-0708 |
| 51-50-1017 | 51-50-1018 |
| 51-50-1714 | 51-50-1715 |
The following section of the Washington Administrative Code is repealed:
| WAC 51-50-004 | Conflicts with Washington State Ventilation and Indoor Air Quality Code. |