Preproposal statement of inquiry was filed as WSR 06-07-126 and 06-07-127.
Title of Rule and Other Identifying Information: Amendment of chapter 51-50 WAC, adoption and amendment of the 2006 Edition of the International Building Code (IBC).
Hearing Location(s): Spokane City Council Chambers, West 808 Spokane Falls Boulevard, Spokane, WA, on September 8, 2006, at 10:00 a.m.; and at the Holiday Inn Select Renton, One Grady Way South, Renton, WA, on October 13, 2006, at 10:00 a.m.
Date of Intended Adoption: November 17, 2006.
Submit Written Comments to: John Neff, Council Chair, P.O. Box 42525, Olympia, WA 98504-2525, e-mail email@example.com, fax (360) 586-9383, by October 13, 2006.
Assistance for Persons with Disabilities: Contact Sue Mathers by August 31, 2006, 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 make changes to the state amendments to this code. This proposal also adopts amendments to the 2006 International Existing Buildings Code in an appendix available for local adoption.
1. WAC 51-50-003 International Building Code: Adopts by reference the 2006 edition of the International Building Code, including Appendix E.
2. WAC 51-50-007 Exception: References the 2006 International Existing Building Code as Appendix Chapter M.
3. WAC 51-50-008 Implementation: Sets an effective date of July 1, 2007.
4. Section 107 Temporary Structures and Uses: Allows unheated tents and yurts under 500 square feet to be used indefinitely.
5. Section 202 Definitions: Modifies definitions of "story," and "story above grade." Does not adopt definition of "residential care/ assisted living."
6. Section 308 Institutional Group I: Deletes reference to Group R-4 and LC, and replaces with reference to Group R-2.
7. Section 310 Residential Group R: Deletes reference to Group LC; adds boarding homes and residential treatment facilities to Group R-2; does not adopt Group R-4 and definition of "residential care/assisted living."
8. Section 406 Motor vehicle related occupancies: Deletes requirement for a sloped floor in a parking area for automobiles and other vehicles.
9. Section 407 Group I-2: Clarifies intent for the system controlling locks on exit doors to allow appropriate occupants to exit.
10. Section 502 Definitions: Modifies definition of "basement" and "story."
11. Section 503 General height and area limitations: New footnote "e" to Table 503 allows an additional story increase for Group B or Group R, Divisions 1 and 2 Occupancies of Type VA construction, when certain conditions are met.
12. Section 506 Area modifications: Exempts certain basements from being included in the total allowable area for a building.
13. Section 509 Special Provisions: Clarifies the methods used to establish the equivalent of separate and distinct buildings.
14. Section 707 Shaft enclosures: Establishes pressurization method for elevator hoistways for smoke control, as an alternate to enclosed lobbies. New section adopts new provisions in the 2006 IBC, and relocates and revises current state amendment from 909.6.3.
15. Section 903 Automatic sprinkler systems: Subsections amended:
a. 903.2.1.2: Group A-2 threshold for requiring sprinklers, deletes state amendment. Threshold in the 2006 IBC is equivalent.
b. 903.2.2: State law requires sprinklers in Group E educational occupancies. (RCW 19.27.113.) This amendment eliminates most exemptions for Group E occupancies. The change exempts portable classroom clusters up to 5000 square feet and Group E occupancies of less than 50 occupants from sprinkler requirements.
c. 903.2.7 Group R. Exempts from sprinkler requirements certain Group R occupancies that meet the listed criteria.
903.2.10.3 Buildings over 75 feet in height. Deletes the amendment requiring sprinklers in buildings over 75 feet in height. Reverts to 2006 IBC requiring sprinklers in buildings 55 feet or more in height.
16. Section 909 -- Smoke control systems: Removes elevator shaft pressurization requirements from this section; reverts to 2006 IBC section 707.14.
17. Section 1008.1.2 Door swing: Adds an exception to allow manual sliders in certain low occupancy areas. Removes reference to power operated door, which is covered in amendments to Chapter 11 and ANSI A117.1.
18. Section 1009.12 Stairways and handrails: Exempts limited areas in dwellings from stairway requirements.
19. Section 1014.2.2 Exit Access Group I-2 Suites: Clarifies exit access provisions for suites in Group I-2 occupancies (hospitals, nursing homes). Defines intervening rooms and how travel distance is measured.
20. Section 1015 Exit and exit access doorways: Allows one exit in some dwelling units. Clarifies the number of exit access doorways required from spaces and corrects references for consistency.
21. Section 1017 Corridor construction, air movement and smoke barriers: For Group R-2 boarding homes or residential treatment facilities licensed by the state, allows "rest areas" in corridors and requires a smoke barrier on floors other than the level of exit discharge. Adds exceptions to use of corridors for air movement to correlate with the state mechanical code.
22. Section 1019 Number of exits and continuity: Clarifies the number of exit access doorways required from stories, creates an exception allowing one means of egress for dwelling units with a maximum occupant load of 20, and corrects references for consistency.
23. Section 1101 Accessibility, General: Indicates ANSI A117.1 Accessible and Usable Buildings and Facilities is amended by this rule.
24. Section 1101.2.1 (ICC A117.1 Section 403.7) Walking surface rise and landings: Requires landings for walking surfaces on an accessible route with over 30 inches rise.
25. Section 1101.2.2 (ICC A117.1 Section 403.5) Clear width of accessible route: Requires exterior accessible routes to be 44 inches wide.
26. Section 1101.2.3 (ICC A117.1 Section 404.2.8) Door-opening force: Exterior doors must have an opening force of 10 pounds maximum or be automatic doors. Interior doors must have an opening force of 5 pounds maximum or be automatic doors.
27. Section 1101.2.4 (ICC A117.1 Section 407.4.6.2.2) Arrangement of elevator car buttons: This section of ANSI A117.1 is not adopted, title is amended to indicate section scope.
28. Section 1101.2.5 (ICC A117.1 Section 603.4) and Section 1101.2.6 (ICC A117.1 Section 604.11) Coat hooks and shelves: Amends maximum reach height for shelves in bathrooms and toilet compartments to 42 inches.
29. Section 1101.2.7 (ICC A117.1 Section 606.7) Operable parts: Amends the maximum reach height for operable parts on dispensers and equipment in bathrooms to 40 inches.
30. Section 1101.2.8 (ICC A117.1 Section 604.6) Flush controls: Amends the maximum height for flush controls to 44 inches.
31. Section 1101.2.9 (ICC A117.1 Section 703.6.3.1) International Symbol of Accessibility. Requires all signs depicting the International Symbol of Accessibility be white on a blue background.
32. Section 1101.2.11 (ICC A117.1 Section 404.3.5) Control switches: Amends the height of control switches for automatic doors to 32 inches minimum and 40 inches maximum, and centers clear floor space on the control switch.
33. Section 1106 Parking and passenger loading facilities: Amends the scope of required parking for hospital and rehabilitation facilities. Clarifies the location of the accessible route of travel.
34. Section 1107 Dwelling units and sleeping units: Requires accessible units be dispersed in proportion to the various types of units in a multi-unit building.
35. Section 1126.96.36.199.1 Type A Units: Deletes state amendment to this section requiring at least 5% of Group R-2 units on a site with more than 10 units be Type A units. Reverts to the 2006 IBC, requiring at least 2% of Group R-2 units on a site with more than 20 units be Type A units.
36. Section 1204 Temperature Control: Provides an exception to the space heating requirement for Group R-1 transient hotels, motels and boarding houses not more than 500 square feet in area. Maintains state amendment related to solid fuel burning appliances.
37. Section 1205 Lighting: Requires every space in Group R occupancies to be provided with natural light except kitchens and one additional room not more than 15% of the area of the dwelling unit.
38. Section 1405 Installation of wall coverings: Corrects a reference to the standard for anchored masonry veneer.
39. Section 1602 Definitions and Notations and Section 1607 Live Loads. Definitions of "exterior balcony" and "deck" are not adopted. Amends live load for balconies to be the same as for decks.
40. Section 1702 Definitions: State amendment to definition of "structural observation" is deleted, reverting to the 2006 IBC. A new definition of "small business" is added.
41. Section 1714 Preconstruction Load Tests: For exterior doors and windows, provides an exception to the load testing requirement for small business manufacturers.
42. Section 2106 Seismic Design: Provides an exception for special reinforced masonry shear walls.
43. Chapter 29 Plumbing Systems: Retains state amended chapter regulating the number and location of plumbing fixtures. Adds a requirement for toilet rooms in Group R-2 boarding homes and residential treatment facilities (2902.1.1). Provides an exception allowing a reduction in the number of fixtures in multiplex movie theaters (Table 2902.1 footnote 9).
44. Section 3001 Elevators and Conveying Systems: General requirements from the 2006 IBC are referenced.
45. Section 3004 Hoistway Venting: Requires a damper on elevator hoistway vents.
46. Section 3006 Machine Rooms: Clarifies the requirement for machine room venting and provides an exception.
47. Section 3103 Temporary structures: Allows unheated tents and yurts under 500 square feet to be used indefinitely.
48. Section 3109 Swimming pool enclosures and safety devices: The regulations for public swimming pool barriers are not adopted. Barriers are regulated by the department of health under WAC 246-260-031(4).
49. Section 3409 Accessibility for existing buildings: Reverts to 2006 IBC for alterations, elevators and platform lifts, and notification devices for dwelling and sleeping units. Retains state amendments requiring telephones on an accessible route and allowing the number of toilet facilities to be reduced in order to provide accessibility.
50. Section 480000 Appendix Chapter M: Creates a new appendix containing the 2006 International Existing Building Code with state amendments.
Reasons Supporting Proposal: RCW 19.27A.031 and 19.27A.074.
Statutory Authority for Adoption: RCW 19.27A.031, 19.27A.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 following rules.
Name of Proponent: Washington state building code council, governmental.
Name of Agency Personnel Responsible for Drafting and Implementation: Tim Nogler, P.O. Box 42525, Olympia, WA 98504-2525, (360) 725-2969; and Enforcement: Local jurisdictions.
No small business economic impact statement has been prepared under chapter 19.85 RCW. This rule will update the adoption of model codes to stay current with national standards for the benefit of industry and Washington state interests. New state amendments clarify and simplify the code. Where disproportionate economic impact on small business was identified, proposed amendments mitigate the impact by providing an exemption for small business.
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, 2006
John P. Neff
STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE ((
2006 EDITION OF THE INTERNATIONAL BUILDING CODE
[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.]
Pursuant to RCW 19.27.040, Chapter 11 and requirements affecting barrier-free access shall not be amended by local governments.
[Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-005, 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, § 51-50-005, filed 8/25/04, effective 9/25/04. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-005, 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 International Existing Building Code is referenced in this code as Appendix Chapter M and may be adopted by the authority having jurisdiction in accordance with Section 101.2.1.
[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 19.27.031 and 19.27.074. 04-01-108, § 51-50-008, filed 12/17/03, effective 7/1/04.]
107.1 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 be allowed to be used indefinitely.|
SECTION 202 -- DEFINITIONS.
ADULT FAMILY HOME. See Section 310.2.
CHILD DAY CARE. See Section 310.2.
CHILD DAY CARE HOME, FAMILY. See Section 310.2.
NIGHTCLUB. An establishment, other than a theater with fixed seating, which includes all of the following:
1. Provides live entertainment by paid performing artists or by way of recorded music conducted by a person employed or engaged to do so;
2. Has as its primary source of revenue the sale of beverages of any kind for consumption on the premises and/or cover charges;
3. Has an occupant load of 100 or more as determined by the fire code official; and
4. Includes assembly space without fixed seats considered concentrated or standing space per Table 1004.1.2.
Paid performing artists are those entertainers engaged to perform in a for-profit business establishment.
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 19.27.020, 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.]
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
Congregate care facilities
Social rehabilitation facilities
Alcohol and drug centers
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. ((
facility such as above, housing at least six and not more than
16 persons, shall be classified as Group R-4.))
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 (( Licensed Care Group LC)) 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:
Nursing homes (both intermediate-care facilities and skilled nursing facilities)
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 (( Licensed Care Group LC)) Group R-2.
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, when the rooms where such children are cared for are located on the level of exit discharge and each of these child care rooms has an exit door directly to the exterior, shall be classified as Group E.|
|2. Family child day care homes licensed by the Washington state department of social and health services for the care of twelve or fewer children shall be classified as Group R-3.|
[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 ((
Licensed Care Group LC)) when not
regulated by the International Residential Code in accordance
with Section 101.2. Residential occupancies shall include the
R-1 Residential occupancies where the occupants are primarily transient in nature, including:
Boarding houses (transient)
R-2 Residential occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent in nature, including:
Boarding houses (not transient)
Boarding homes as licensed by department of social and health services under chapter 388-78A WAC
Fraternities and sororities
Residential treatment facilities as licensed by department of health under chapter 246-337 WAC
Vacation timeshare properties
R-3 Residential occupancies where the occupants are primarily permanent in nature and not classified as R-1, R-2, R-4 or I and where buildings 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. Adult family homes and family child day care homes, or adult and child care facilities that are within a single-family home 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 permitted, as an accessory use to a dwelling, for six or fewer children including those of the resident family.
R-4 Residential occupancies shall include buildings arranged
for occupancy as residential care/assisted living facilities
including more than five but not more than 16 occupants,
ADULT FAMILY HOME means a dwelling 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.
CHILD DAY CARE, shall, for the purposes of these regulations, mean 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 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.
RESIDENTIAL CARE/ASSISTED LIVING FACILITIES. A building or part thereof housing persons, on a 24-hour basis, who because of age, mental disability or other reasons, live in a supervised residential environment which provides personal care services that is not classified as Licensed Care Group LC. The occupants are capable of responding to an emergency situation without physical assistance from staff. This classification 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 abuse centers and convalescent facilities. This definition is not adopted.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0310, filed 12/17/03, effective 7/1/04.]
406.2.6 Floor surface. Parking surfaces shall be of concrete or similar noncombustible and nonabsorbent materials.
|EXCEPTION:||Asphalt parking surfaces are permitted at ground level.|
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
to inform)) that allows visitors, staff persons and
appropriate residents (( how they can)) to exit. Instructions
for exiting shall be posted within six feet of the door.
[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.]
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").
|Height limitations shown as stories and feet above grade plane.
Area limitations as determined by the definition of "Area, building," per story.
|TYPE OF CONSTRUCTION|
|TYPE I||TYPE II||TYPE III||TYPE IV||TYPE V|
|For SI: 1 foot = 304.8 mm, 1 square foot = 0.0929 m2.|
|UL = Unlimited, NP = Not permitted.|
|a. See the following sections for general exceptions to Table 503:|
|1. Section 504.2, Allowable height increase due to automatic sprinkler system installation.|
|2. Section 506.2, Allowable area increase due to street frontage.|
|3. Section 506.3, Allowable area increase due to automatic sprinkler system installation.|
|4. Section 507, Unlimited area buildings.|
|b. For open parking structures, see Section 406.3.|
|c. For private garages, see Section 406.1.|
|d. See Section 415.5 for limitations.|
|e. For Group B or Group R, Divisions 1 and 2 Occupancies, the permitted increase of one story allowed by Section 504.2 may be increased to two stories when all of the following conditions are met:|
|1. An automatic fire sprinkler system complying with Section 903.3.1.1 is installed throughout with the installation of quick response sprinkler heads in all areas where the use of these heads is allowed.|
|2. Vertical exit enclosures are constructed as smokeproof enclosures or pressurized stair enclosures in accordance with Section 909.20.|
|3. Standby power is supplied for light, emergency, and any exit enclosure pressurization systems used, as provided in Sections 403.10 and 909.20.6.2, and the adopted edition of the National Electrical Code. Connection ahead of service disconnect means shall be permitted for standby power.|
|4. Walls separating dwelling units or sleeping units, and corridor walls in Group R, Divisions 1 and 2 Occupancies shall be constructed as 1 hr. fire partitions as provided in IBC Section 708. Reduction of the fire-resistance rating is not permitted.|
|5. All exterior walls, including those with a fire separation distance of more than 5 feet, shall be of not less than 1 hr. fire-resistance rated construction on the interior and the exterior of the wall.|
|6. Structural observation is provided during construction in accordance with Sections 1702 and 1709.1.|
506.1.1 Basements. A single basement that is not a story above grade plane need not be included in the total allowable area provided such basement does not exceed the area permitted for a building with no more than one story above grade plane.
|EXCEPTION:||In buildings of Type I, IIA, IIIA, IV or VA construction, the 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.|
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.
|EXCEPTION:||Where the enclosure walls below the horizontal assembly have not less than a 3-hour fire-resistance rating with opening protectives in accordance with Table 715.3, the enclosure walls extending above the horizontal assembly shall be permitted to have a 1-hour fire-resistance rating provided:|
|1. The building above the horizontal assembly is not required to be of Type I construction,|
|2. The enclosure connects less than four stories, and|
|3. The enclosure opening protectives above the horizontal assembly have a minimum 1-hour fire-protection rating.|
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.
|EXCEPTIONS:||1. Entry lobbies, mechanical rooms and similar uses incidental to the operation of the building shall be permitted.|
|2. Multiple Group A uses, each with an occupant load of less than 300, or Group B or M uses shall be permitted in addition to those uses incidental to the operation of the building (including storage areas), provided that the entire structure below the horizontal assembly is protected throughout by an approved automatic sprinkler system.|
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.
707.14.1 Elevator lobby. Elevators opening into a
fire-resistance-rated corridor as required by Section 1016.1
shall be provided with an elevator lobby at each floor
containing such a corridor. The lobby shall separate the
elevators from the corridor by fire partitions and the
required opening protection. Elevator lobbies shall have at
least one means of egress complying with Chapter 10 and other
provisions within this code.
707.14.2.1 Pressurization requirements. Elevator hoistways shall be pressurized to maintain a minimum positive pressure of 0.04 inches of water column and a maximum positive pressure of 0.06 inches of water column with respect to adjacent occupied space on all floors, 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 Hoistway venting. Hoistway venting required by Section 3004 need not be provided for pressurized elevator shafts.
707.14.2.8 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 19.27.031 and 19.27.074. 04-01-108, § 51-50-0707, filed 12/17/03, effective 7/1/04.]
903.2.1.2 Group A-2. An automatic sprinkler system shall be
provided for Group A-2 Occupancies where one of the following
1. The fire area exceeds 5,000 square feet (464.5 m2).
2. The fire area has an occupant load of 100 or more.
3. The fire area is located on a floor other than the level of exit discharge.))
903.2.1.6 Nightclub. An automatic sprinkler system shall be provided throughout an occupancy with a nightclub. Existing nightclubs constructed prior to July 1, 2006, shall be provided with automatic sprinklers not later than December 1, 2007. The fire code official, for the application of this rule, may establish an occupant load based on the observed use of the occupancy in accordance with Table 1004.1.2.
903.2.2 Group E. An automatic sprinkler system shall be provided for Group E Occupancies ((
1. Throughout all Group E fire areas greater than 20,000 square feet (1858 m2) in area.
2. Throughout every portion of educational buildings below the level of exit discharge.
For the purpose of this section, additions exceeding 60 percent of the value of such building or structure, or alterations and repairs to any portion of a building or structure within a twelve-month period that exceeds 100 percent of the value of such building or structure shall be considered new construction. In the case of additions, fire walls shall define separate buildings)).
|EXCEPTIONS:||1. Portable school classrooms, provided aggregate area of any cluster or portion of a cluster((
|2. Group E ((
|EXCEPTION:||Group R-1 if all of the following conditions apply:|
|1. The Group R fire area is no more than 500 square feet.|
|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 19.27.020, 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.]
909.6.3 Elevator shaft pressurization. Where elevator shaft
pressurization is required to comply with Exception 5 of
Section 707.14.1, the pressurization system shall comply with
909.6.3.1 Standards and testing. Elevator shafts shall be pressurized to not less than 0.10 inch water column relative to atmospheric pressure. Elevator pressurization shall be measured with the elevator cars at the designated primary recall level with the doors in the open position. The test shall be conducted at the location of the calculated maximum positive stack effect in the elevator shaft. The measured pressure shall be sufficient to provide 0.10 inch of water column as well as accounting for the stack and wind effect expected on the mean low temperature January day.
909.6.3.2 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 chief. If the building has a fire alarm panel, detectors shall be connected to, with power supplied by, the fire alarm panel.
909.6.3.3 Separation. Elevator shaft pressurization equipment and its ductwork located within the building shall be separated from other portions of the building by construction equal to that required for the elevator shaft.
909.6.3.4 Location of intakes. Elevator shaft pressurization air intakes shall be located in accordance with Section 909.10.3. Such intakes shall be provided with smoke detectors which upon detection of smoke, shall deactivate the pressurization fan supplied by that air intake.
909.6.3.5 Power system. The power source for the fire alarm system and the elevator shaft pressurization system shall be in accordance with Section 909.11.
909.6.3.6 Hoistway venting. Hoistway venting required by Section 3004 need not be provided for pressurized elevator shafts.
909.6.3.7 Machine rooms. Elevator machine rooms required to be pressurized by Section 3006.3 need not be pressurized where separated from the hoistway shaft by construction in accordance with Section 707.
909.6.3.8 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 19.27.020, 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.]
1008.1.2 Door swing. Egress doors shall be side-hinged swinging.
|EXCEPTIONS:||1. Private garages, office areas, factory and storage areas with an occupant load of 10 or less.|
|2. Group I-3 Occupancies used as a place of detention.|
|3. Critical or intensive care patient rooms within suites of health care facilities.|
|4. Doors within or serving a single dwelling unit in Groups R-2 and R-3 as applicable in Section 101.2.|
|9. In other than Group H Occupancies, manually operated horizontal sliding doors are permitted in a means of egress from occupied spaces with an occupant load of 10 or less.|
The opening force for interior side-swinging doors
without closers shall not exceed a 5-pound force. For other
side-swinging, sliding, and folding doors, the door latch
shall release when subjected to a 15-pound force. The door
shall be set in motion when subjected to a 30-pound force.
The door shall swing to a full-open position when subjected to
a 15-pound force. Forces shall be applied to the latch side.
Within an accessible route, at exterior doors where
environmental conditions require a closing pressure greater
than 8.5 pounds, power operated doors shall be used within the
accessible route of travel.))
[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.]
1009.13)) 1009.12 Stairways in individual dwelling units.
Stairs or ladders within an individual dwelling unit used (( to
gain)) 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 19.27.031 and 19.27.074. 04-01-108, § 51-50-1009, filed 12/17/03, effective 7/1/04.]
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.
|EXCEPTIONS:||1. Rooms with exit doors opening directly to the outside at ground level.|
|2. Patient sleeping rooms are permitted to have one intervening room if the intervening room is not used as an exit access for more than eight patient beds.|
|3. Special nursing suites are permitted to have one intervening room where the arrangement allows for direct and constant visual supervision by nursing personnel.|
|4. For rooms other than patient sleeping rooms located within a suite, exit access travel from within the suite shall be permitted through one intervening room where the travel distance to the exit access door is not greater than 100 feet (30,480 mm).|
|5. 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).|
|EXCEPTION:||Suites complying with Section 1014.2.2.1.|
1014.2.2.1.1 Definition. For the purposes of this section, a suite is defined as a cluster of rooms or spaces sharing common circulation and separated from adjacent areas with smoke partitions. Partitions within a suite are not required to have smoke or fire-resistance-rated construction unless required by another section of this Code.
1014.2.2.1.2 Size of suites. Suites of sleeping rooms shall not exceed 5,000 square feet (465 m2). Suites of rooms other than patient sleeping rooms shall not exceed 10,000 square feet (929 m2).
1014.2.2.1.3 Number of means of egress. 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 that comply with Section 1015.2. Any room 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 that comply with Section 1015.2.
1014.2.2.1.4 Intervening rooms. For the purposes of this section, an intervening room is defined as a room or space through which occupants must pass on the way from a habitable room or space to a corridor or exit. A circulation space within the suite, including adjacent areas open to that circulation space, is considered to be an intervening room. Toilet rooms, control rooms, equipment rooms, and similar accessory spaces within a suite are not considered to be habitable rooms.
1014.2.2.1.5 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). Where a suite has two required means of egress, one of them may pass through the circulation space of one adjacent suite. Where a means of egress is into an adjoining suite the travel distance within the suite shall be measured to the door of the adjacent suite. The adjacent suite shall not be considered an intervening room. Required egress pathways from areas outside the suite and the adjacent suite shall not pass through the suite.
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.
|EXCEPTION:||One means of egress is permitted within and from dwelling units with a maximum occupant load of 20 where the dwelling unit is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.|
3. Where required by Sections 1015.3, 1015.4, 1015.5, 1015.6 or 1015.6.1.
|EXCEPTION:||Group I-2 occupancies shall comply with Section 1014.2.2.|
|OCCUPANCY||MAXIMUM OCCUPANT LOAD|
|A, B, Ea, F, M, U||49|
|H-1, H-2, H-3||3|
|H-4, H-5, I-1, I-3, I-4, R||10|
|a. Day care maximum occupant load is 10.|
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. A fire-resistance rating is not required for corridors in an occupancy in Group E where each room that is used for instruction has at least one door directly to the exterior and rooms for assembly purposes have at least one-half of the required means of egress doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.|
|2. A fire-resistance rating is not required for corridors contained within a dwelling or sleeping unit in an occupancy in Group R.|
|3. A fire-resistance rating is not required for corridors in open parking garages.|
|4. A fire-resistance rating is not required for corridors in an occupancy in Group B which is a space requiring only a single means of egress complying with Section 1015.1.|
|5. In Group R-2 boarding homes and residential treatment facilities licensed by Washington state, rest areas constructed as required for corridors shall be allowed to be open to the corridor provided:|
|5.1 The area does not exceed 150 square feet, excluding the corridor width;|
|5.2 The floor is separated into at least two compartments complying with Section 407.4;|
|5.3 Combustible furnishings located within the rest area shall be in accordance with the International Fire Code section 805;|
|5.4 Emergency means of egress lighting is provided as required by Section 1006 to illuminate the area.|
|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. Where such air is part of an engineered smoke control system.|
|5. Corridors serving residential occupancies shall be permitted to be supplied without specific mechanical exhaust subject to the following:|
|5.1 The supply air is one hundred percent outside air; and|
|5.2 The units served by the corridor have conforming ventilation independent of the air supplied to the corridor; and|
|5.3 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|
|5.4 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.|
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.
|EXCEPTION:||One means of egress is permitted within and from dwelling units with a maximum occupant load of 20 where the dwelling unit is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.|
|OCCUPANT LOAD (persons per story)||MINIMUM NUMBER OF EXITS (per story)|
|More than 1,000||4|
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.
|OCCUPANCY||MAXIMUM HEIGHT OF BUILDING ABOVE GRADE PLANE||MAXIMUM OCCUPANTS (OR DWELLING UNITS) PER FLOOR AND TRAVEL DISTANCE|
|A, Bd, Ee, F, M, U||1 Story||49 occupants and 75 feet travel distance|
|H-2, H-3||1 Story||3 occupants and 25 feet travel distance|
|H-4, H-5, I, R||1 Story||10 occupants and 75 feet travel distance|
|Sa||1 Story||29 occupants and 100 feet travel distance|
|Bb, F, M, Sa||2 Stories||30 occupants and 75 feet travel distance|
|R-2||2 Storiesc||4 dwelling units and 50 feet travel distance|
|For SI: 1 foot = 304.8 mm.|
|a. For the required number of exits for open parking structures, see Section 1019.1.1.|
|b. For the required number of exits for air traffic control towers, see Section 412.1.|
|c. Buildings classified as Group R-2 equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2 and provided with emergency escape and rescue openings in accordance with Section 1026 shall have a maximum height of three stories above grade plane.|
|d. Buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 with an occupancy in Group B shall have a maximum travel distance of 100 feet.|
|e. Day care maximum occupant load is 10.|
1101.2 Design. Buildings and facilities shall be designed and constructed to be accessible in accordance with this code and ICC A117.1, except those portions of ICC A117.1 amended by this section.
1101.2.1 (ICC A117.1 Section 403) Landings for walking
surfaces. The maximum rise for any run is 30 inches (762 mm).
Landings shall be provided at the top and bottom of any run.
Landings shall be level and have a minimum dimension measured
in the direction of travel of not less than 60 inches (1525
mm).)) 1101.2.1 (ICC A117.1 Section 403.7) Walking surface
rise and landings. The rise for any walking surface shall be
30 inches (762 mm) maximum. Walking surface runs with a
running slope steeper than 1:48 shall have landings at the
bottom and top of each run. Landings shall have a slope not
steeper than 1:48 and shall comply with Section 302. Landings
shall have a clear width at least as wide as the widest
walking surface leading to the landing. Landings shall have a
clear length of 60 inches (1525 mm) minimum. Landings subject
to wet conditions shall be designed to prevent the
accumulation of water.
1101.2.2 (ICC A117.1 Section 403.5) Clear width of accessible route. Clear width of an accessible route shall comply with ICC A117.1 Table 403.5. For exterior routes of travel, the minimum clear width shall be 44 inches (1118 mm).
1101.2.3 (ICC A117.1 Section ((
404.2.9)) 404.2.8) Door-opening
force. Fire doors shall have the minimum opening force
allowable by the appropriate administrative authority. The
(( maximum)) force for pushing (( open)) or pulling open doors
other than fire doors shall be as follows:
1. Interior hinged door: 5.0 pounds (22.2 N) maximum
2. Interior sliding or folding doors: 5.0 pounds (22.2 N) maximum
3. Exterior hinged, sliding or folding door: 10 pounds (44.4 N) maximum.
|EXCEPTION:||Interior or exterior automatic doors complying with Section 404.3 of ICC ANSI A117.1.|
These forces do not apply to the force required to retract latch bolts or disengage other devices that hold the door in a closed position.
1101.2.4 (ICC A117.1 Section 407.4.6.2.2) Arrangement of elevator car buttons. This section is not adopted.
1101.2.5 (ICC A117.1 Sections 603.4 and 604.11) Coat hooks,
shelves, dispensers, and other fixtures. Coat hooks provided
shall accommodate a forward reach or side reach complying with
ICC A117.1 Section 308. Where provided, shelves shall be
installed so that the top of the shelf is 40 inches (1015 mm)
maximum above the floor or ground. Drying equipment, towel or
other dispensers, and disposal fixtures shall be located 40
inches (1015 mm) maximum above the floor or ground to any
rack, operating controls, receptacle or dispenser.)) 1101.2.5
(ICC A117.1 603.4) Coat hooks and shelves. Coat hooks shall
be located within one of the reach ranges specified in Section
308. Shelves shall be installed so the top of the shelf is 40
inches (1015 mm) minimum and 42 inches maximum above the
1101.2.6 (ICC A117.1 604.11) Coat hooks and shelves. Coat hooks provided within toilet compartments shall be located within one of the reach ranges specified in Section 308. Shelves shall be installed so the top of the shelf is 40 inches (1015 mm) minimum and 42 inches maximum above the floor.
1101.2.7 (ICC ANSI A117.1 606.7) Operable parts. Operable parts on drying equipment, towel or cleansing product dispensers, and disposal fixtures shall comply with Table 606.7, except the maximum reach height shall be 40 inches (1015 mm) for reach depths less than 6 inches.
1101.2.6)) 1101.2.8 (ICC A117.1 Section 604.6) Flush
controls. (( Hand operated flush controls for water closets
shall be mounted not more than 44 inches (1118 mm) above the
floor.)) Flush controls shall be hand operated or automatic.
Hand operated flush controls shall comply with Section 309,
except the maximum height above the floor shall be 44 inches.
Flush controls shall be located on the open side of the water
|EXCEPTION:||In ambulatory accessible compartments complying with Section 604.9, flush controls shall be permitted to be located on either side of the water closet.|
1101.2.9 (ICC A117.1 Section 703.6.3.1) International Symbol of Accessibility. Where the International Symbol of Accessibility is required, it shall be proportioned complying with ICC A117.1 Figure ((
703.7.2.1)) 703.6.3.1. All interior
and exterior signs depicting the International Symbol of
Accessibility shall be white on a blue background.
1101.2.11 (ICC A117.1 Section 404.3.5) Control switches. ((
Control switches shall be mounted 32 to 40 inches above the
floor and not less than 18 inches nor more than 36 inches
horizontally from the nearest point of travel of the moving
doors.)) Manually operated control switches shall comply with
Section 309, except they shall be placed 32 inches minimum
(815 mm) and 40 inches maximum (1015 mm) above the floor. The
clear floor space adjacent to the control switch shall be
located beyond the arc of the door swing and centered on the
[Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-1101, filed 12/5/05, effective 7/1/06; 05-01-014, § 51-50-1101, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1101, filed 12/17/03, effective 7/1/04.]
Outpatient medical care facilities. For Group I-1
and I-2 Occupancies providing outpatient medical care
facilities, 10 percent, but not less than one, of the parking
spaces provided accessory to such occupancies shall be
accessible.)) 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.
Inpatient and outpatient medical care facilities.
For Group I-1 and I-2 units and facilities specializing in the
treatment of persons with mobility impairments on either an
inpatient or outpatient basis, 20 percent, but not less than
one, of the parking spaces provided accessory to such units
and facilities shall be accessible.)) 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. ((
parking spaces shall be dispersed among the various types of
parking facilities provided.)) 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 (( of travel)) shall not cross lanes of vehicular
traffic. Where crossing traffic lanes is necessary, the route
(( of travel)) 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 19.27.031 and 19.27.074. 04-01-108, § 51-50-1106, filed 12/17/03, effective 7/1/04.]
1107.6 Group R. ((
Occupancies in Group R shall be provided
with accessible features)) Accessible units, Type A units and
Type B units shall be provided in Group R Occupancies in
accordance with Sections 1107.6.1 through 1107.6.4. Accessible and Type A units shall be apportioned among
efficiency dwelling units, single bedroom units and multiple
bedroom units, in proportion to the numbers of such units in
the building. (( Accessible hotel guest rooms shall be
apportioned among the various classes of sleeping
1188.8.131.52.1 Type A units. In occupancies in Group R-2 containing more than 10 dwelling units or sleeping units, at least 5 percent, but not less than one, of the units shall be a Type A unit. All units on a site shall be considered to determine the total number of units and the required number of Type A units. Type A units shall be dispersed among the various classes of units.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1107, filed 12/17/03, effective 7/1/04.]
1204.1 Equipment and systems. Interior spaces intended for human occupancy shall be provided with active or passive space-heating systems capable of maintaining a minimum indoor temperature of 68°F (20°C) at a point 3 feet (914 mm) above the floor on the design heating day.
|EXCEPTION:||1. Interior spaces where the primary purpose is not associated with human comfort.|
|2. Group R-1 Occupancies not more than 500 square feet.|
1204.2.1 Definitions. For the purposes of this section only, the following definitions apply.
DESIGNATED AREAS are those areas designated by a county to be an urban growth area in chapter 36.70A RCW and those areas designated by the U.S. Environmental Protection Agency as being in nonattainment for particulate matter.
SUBSTANTIALLY REMODELED means any alteration or restoration of a building exceeding 60 percent of the appraised value of such building within a 12-month period. For the purpose of this section, the appraised value is the estimated cost to replace the building and structure in-kind, based on current replacement costs.
1204.2.2 Primary heating source. Primary heating sources in all new and substantially remodeled buildings in designated areas shall not be dependent upon wood stoves.
1204.2.3 Solid fuel burning devices. No used solid fuel burning device shall be installed in new or existing buildings unless such device is United States Environmental Protection Agency certified or a pellet stove either certified or exempt from certification by the United States Environmental Protection Agency.
|EXCEPTION:||Antique wood cook stoves and heaters manufactured prior to 1940.|
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1204, filed 12/17/03, effective 7/1/04.]
1205.1 General. Every space intended for human occupancy shall be provided with natural light by means of exterior glazed openings in accordance with Section 1205.2. In other than Group R Occupancies, such spaces shall be permitted to be provided with artificial light in accordance with Section 1205.3 in lieu of natural light. Exterior glazed openings shall open directly onto a public way or onto a yard or court in accordance with Section 1206.
|EXCEPTIONS:||1. Kitchens in Group R Occupancies may be provided with artificial light, in lieu of natural light.|
|2. One room, in addition to the kitchen, within a dwelling unit shall be permitted to be provided with artificial light in lieu of natural light in accordance with Section 1205.3, provided that the room is not a sleeping room and occupies no more than 15 percent of the area of the dwelling unit.|
1405.5.2 Seismic requirements. Anchored masonry veneer located in Seismic Design Category C, D, E, or F shall conform to the requirements of Section 184.108.40.206, except Section ((
220.127.116.11.2.2)) 18.104.22.168.3.2, of ACI 530/ASCE 5/TMS 402.
Anchored masonry veneer located in Seismic Design Category D
shall conform to the requirements for Seismic Design Category
E or F.
[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.
|OCCUPANCY OR USE||UNIFORM (psf)||CONCENTRATED (psf)|
|9. Decksh and Balconies||Same as occupancy served||--------|
|One- and two-family dwellings|
|Uninhabitable attics without storagei||10|
|Uninhabitable attics with limited storagei, j, k||20|
|Habitable attics and sleeping areas||30||--------|
|All other areas||40|
|Hotels and multifamily dwellings|
|Private rooms and corridors serving them||40|
|Public rooms and corridors serving them||100|
STRUCTURAL OBSERVATION. The visual observation of the
structural system by a registered design professional for
general conformance to the approved construction documents.
Structural observation does not include or waive the
responsibility for the inspection required by Section 109,
1704, or other sections of this code.)) SMALL BUSINESS. Any
business entity (including a sole proprietorship, corporation,
partnership or other legal entity) which is owned and operated
independently from all other businesses, which has the purpose
of making a profit, and which has fifty or fewer employees, or
which has a million dollars or less per year in gross sales,
of window and door products.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1702, filed 12/17/03, effective 7/1/04.]
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.
|EXCEPTION:||1. Structural wind load design pressures for window units smaller than the size tested in accordance with Section 1714.5.1 or 1714.5.2 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 1714 of the International Building Code provided they meet the applicable provisions of Chapter 24 of the International Building Code.|
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 22.214.171.124 of ACI 530/ASCE 5/TMS 402 or with Section 2126.96.36.199, 2188.8.131.52, or 2184.108.40.206.
|EXCEPTION:||Special reinforced masonry shear walls are not required to comply with Section 220.127.116.11.5(a) of ACI 530/ASCE 5/TMS 420 (MSJC-05), provided the masonry resists the calculated shear without shear reinforcement.|
SECTION 2901 -- PLUMBING CODE.
Plumbing systems shall comply with the Plumbing Code.
SECTION 2902 -- GENERAL.
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 Private offices. Fixtures only accessible to private offices shall not be counted to determine compliance with this section.
2902.1.3 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 Food preparation areas. In food preparation, serving and related storage areas, additional fixture requirements may be dictated by health codes.
2902.1.5 Other requirements. For other requirements for plumbing facilities, see Sections 419.15 and 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.
2902.3 Separate facilities.
2902.3.1 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 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 is not adopted.
2902.6 is not adopted.
SECTION 2903 -- SPECIAL PROVISIONS.
2903.1 Dwelling units. Dwelling units shall be provided with a kitchen sink.
2903.2 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 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 Drinking fountains.
2903.4.1 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 Penal institutions. Penal institutions shall have one drinking fountain on each cell block floor and one on each exercise floor.
2903.4.4 Location. Drinking fountains shall not be located in toilet rooms.
|TYPE OF BUILDING OR OCCUPANCY8||WATER CLOSETS
(fixtures per person)
(fixtures per person)
|BATHTUB OR SHOWER
(fixtures per person)
|For the occupancies listed below, use 30 square feet (2.79 m2) per occupant for the minimum number of plumbing fixtures.|
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|
|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|
|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|
|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.|
|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.|
and other clerical or administrative employee accessory use
|1:1-15||1:1-15||One per 2 water closets|
|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|
|(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|
|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|
|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.|
|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|
|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.|
|Retail or wholesale stores||1:1-50||1:1-50||One per 2 water closets|
|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.|
|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|
|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|
|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 19.27.020, 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.]
SECTION 3001 -- GENERAL, is not adopted.
Elevators and conveying systems are regulated by chapter 296-96 WAC.)) 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.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3001, filed 12/17/03, effective 7/1/04.]
3004.3 Area of vents. Except as provided for in Section 3004.3.1, the area of the vents shall not be less than 3 1/2 percent of the area of the hoistway ((
not)) nor less than 3
square feet (0.28 m2) for each elevator car, and not less than
3 1/2 percent nor less than 0.5 square feet (0.047 m3) for each
dumbwaiter car in the hoistway, whichever is greater. (( Vents
shall be capable only of manual operation or controlled by a
manual switch mounted in an approved location.)) The total
required vent area shall be equipped with dampers that remain
powered closed until activated open by the fire alarm system
panel. The dampers shall open upon loss of power.
3004.5 Plumbing and mechanical systems, is not adopted.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3004, filed 12/17/03, effective 7/1/04.]
3006.3 Pressurization, is not adopted.
3006.5 Shunt trip, is not adopted.
3006.6 Plumbing systems, is not adopted.)) 3006.2 Venting. Machinery spaces, machine rooms, control spaces, and control rooms that contain solid-state equipment for elevator operation shall be provided with an independent ventilation or air-conditioning system to protect against the overheating of the electrical equipment. Ventilation systems shall use outdoor make up air. The system shall service the equipment space only, and shall be capable of maintaining the temperature and humidity within the range established by the manufacturer's specifications. Where no manufacturer specifications are available, the equipment space temperature shall be maintained at no less than fifty-five degrees Fahrenheit and no more than ninety degrees Fahrenheit.
The cooling load for the equipment shall include the BTU output of the elevator operation equipment as specified by the manufacturer based on one hour of continuous operation. The outdoor design temperature for ventilation shall be from the 0.5% column for summer from the Puget Sound Chapter of ASHRAE publication "Recommended Outdoor Design Temperatures, Washington State." The following formula shall be used to calculate flow rate for ventilation:
CFM = BTU output of elevator machine room equipment / [1.08 x (acceptable machine room temp - make up air temp)]
|EXCEPTION:||For buildings four stories or less, natural or mechanical means may be used in lieu of an independent ventilation or air-conditioning system to keep the equipment space ambient air temperature and humidity in the range specified by the elevator equipment manufacturer.|
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3006, filed 12/17/03, effective 7/1/04.]
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.
WAC 51-50-3103 Temporary structures.
3103.1 General. The provisions of this section shall apply to structures erected for a period of less than one hundred eighty days. Tents and other membrane structures erected for a period of less than one hundred eighty days shall comply with the International Fire Code. Those erected for a longer period of time shall comply with applicable sections of this code.
|EXCEPTION:||The building official may authorize unheated tents and yurts under five hundred square feet accommodating an R-1 Occupancy for recreational use as a temporary structure and be allowed to be used indefinitely.|
3109.3 Public swimming pools. This section is not adopted. Public swimming pool barriers are regulated by WAC 246-260-031(4).
3409.5 Alterations. A building, facility or element that is
altered shall comply with the applicable provisions in Chapter
11 and ICC A117.1 unless technically infeasible. Where
compliance with the section is technically infeasible, the
alteration shall provide access to the maximum extent
technically feasible. Where alterations would increase the
number of public pay telephones to four, with at least one in
the interior, or where the facility has four or more public
pay telephones and one or more is altered; at least one
interior text telephone shall be provided.
|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.|
3409.7.2 Elevators. Altered elements of existing elevators shall comply with ASME A17.1 and ICC A117.1. Such elements shall also be altered in elevators programmed to respond to the same hall call control as the altered elevator. Elevators shall comply with chapter 296-96 WAC.
3409.7.3 Platform lifts. Platform (wheelchair) lifts complying with ICC A117.1 and installed in accordance with ASME A18.1 shall be permitted as a component of an accessible route. Platform lifts shall comply with chapter 296-96 WAC.
3409.7.7 Dwelling or sleeping units. Where I-1, I-2, I-3, R-1, R-2 or R-4 dwelling or sleeping units are being altered or added, the requirements of Section 1107 for Accessible or Type A units and Chapter 9 for accessible alarms apply only to the quantity of spaces being altered or added. At least one sleeping room for each 25 sleeping rooms, or fraction thereof, being added or altered, shall have telephones and visible notification devices complying with Appendix E Section E104.3.4, as well as visible alarms.
3409.7.9)) 3409.8.9 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 19.27.031 and 19.27.074. 04-01-108, § 51-50-3409, filed 12/17/03, effective 7/1/04.]
INTERNATIONAL EXISTING BUILDING CODE 2006 EDITION
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 Building, Fire and Mechanical Codes (as applicable) shall be demonstrated.
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 Management 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.
|EXCEPTION:||Subject to the approval of the code official, alterations complying with the laws in existence at the time the building or the affected portion of the building was built shall be considered in compliance with the provisions of this code unless the building is undergoing more than a limited structural alteration as defined in Section 807.5.3. New structural members added as part of the alteration shall comply with the International Building Code. Alterations of existing buildings in flood hazard areas shall comply with Section 601.3.|
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 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.
Work area. That portion or portions of a building consisting of all reconfigured spaces as indicated on the construction documents. Work area excludes other portions of the building where incidental work entailed by the intended work must be performed and portions of the building where work not initially intended by the owner is specifically required by this code. The boundary of the work area shall include all spaces not physically separated from rooms or spaces where work is being performed.
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.
[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.
405.1 Scope. Level 3 alterations apply where the work area exceeds 50% of the floor area of the building.
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.
ASCE 41 AND ASCE 31 PERFORMANCE LEVELS
|OCCUPANCY CATEGORY (BASED ON IBC TABLE 1604.5)||PERFORMANCE LEVEL FOR USE WITH ASCE 31 AND WITH ASCE 41 BSE-1 EARTHQUAKE HAZARD LEVEL||PERFORMANCE LEVEL FOR USE WITH ASCE 41 BSE-2 EARTHQUAKE HAZARD LEVEL|
|I||Life Safety (LS)||Collapse Prevention (CP)|
|II||Life Safety (LS)||Collapse Prevention (CP)|
|III||Note a||Note a|
|IV||Immediate Occupancy (IO)||Life Safety (LS)|
|a.||Performance levels for Occupancy Category III shall be taken as halfway between the performance levels specified for Occupancy Category II and IV. Where seismic forces are permitted to meet reduced International Building Code levels, the performance level for Occupancy Category III shall be Life Safety (LS). Where seismic forces are required to meet the International Building Code levels, performance levels for Occupancy Category III shall be taken as follows: Acceptance criteria shall be taken as twenty-five percent more restrictive than the acceptance criteria specified for Occupancy Category II performance levels, but need not be more restrictive than the acceptance criteria specified for Occupancy Category IV 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.
704.1 Scope. The requirements of this section shall be limited to work areas in which Level 2 alterations are being performed, and where specified they shall apply throughout the floor on which the work areas are located or otherwise beyond the work area.
|EXCEPTION:||For Level 2 alteration projects in which the value of the fire protection requirements constitutes an excessive burden, the fire protection requirements may be waived by the fire code official.|
807.5.1 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. 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 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 for seismic loading. For seismic considerations, the analysis shall be based on one of the procedures specified in Section 507.1.1.1.
807.5.3 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.
912.1.1 Compliance with Chapter 8. The requirements of Chapter 8 shall be applicable throughout the building for the new occupancy classification based on the separation conditions set forth in Sections 918.104.22.168 and 922.214.171.124. All existing buildings with a change of occupancy classification shall comply with the seismic provisions of Section 907.3.
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 provide a reasonable degree of safety, based on accepted life and fire safety practices, than 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, 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.
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.
|EXCEPTION:||Replacement glazing in hazardous locations shall comply with the safety glazing requirements of Chapter 24 of the International Building Code.|
1103.7 One-hour fire-resistant assemblies. Where one-hour fire-resistance-rated construction is required by these provisions, it need not be provided, regardless of construction or occupancy, where the existing wall and ceiling finish is wood lath or metal lath and plaster.
1103.9 Stairway railings. Historically significant stairways shall be accepted without complying with the handrail and guard requirements. Existing handrails and guards at all stairs shall be permitted to remain, provided they are not structurally dangerous.
1104.1 Accessibility requirements. The provisions of Section 605 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.
1105.10 One-hour fire-resistant assemblies. Where one-hour fire-resistance-rated construction is required by these provisions, it need not be provided, regardless of construction or occupancy, where the existing wall and ceiling finish is wood lath or metal lath and plaster.
1105.14 Natural light. When it is determined by the professional responsible for the historical documentation of the project that compliance with the natural light requirements of Section 911.1 will lead to loss of historic character or historic materials in the building, the existing level of natural lighting shall be considered acceptable.
1106.1 General. Historic buildings shall comply with the applicable structural provisions for the work as classified in Chapter 5.
|EXCEPTION:||The code official shall be authorized to accept existing floors and approve operational controls that limit the live load on any such floor.|
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.
|EXCEPTION:||The reduced International Building Code level seismic forces as specified in Section 506.1.1.3 shall be permitted to be used for this analysis.|
|ASCE||American Society of Civil Engineers|
|41-06||Seismic Rehabilitation of Existing Buildings|
|NFPA||National Fire Protection Association|
|13-02||Installation of Sprinkler Systems|
The following sections of the Washington Administrative Code are repealed:
|WAC 51-50-0302||Section 302 -- Classification.|
|WAC 51-50-0313||Section 313 -- Licensed Care Group LC.|
|WAC 51-50-0419||Section 419 -- Group LC.|
|WAC 51-50-1010||Section 1010 -- Ramps.|
|WAC 51-50-1024||Section 1024 -- Assembly.|
|WAC 51-50-1103||Section 1103 -- Scoping requirements.|
|WAC 51-50-1104||Section 1104 -- Accessible route.|
|WAC 51-50-1105||Section 1105 -- Accessible entrances.|
|WAC 51-50-1109||Section 1109 -- Other features and facilities.|
|WAC 51-50-1605||Section 1605 -- Load combinations.|
|WAC 51-50-1709||Section 1709 -- Structural observations.|
|WAC 51-50-2107||Section 2107 -- Working stress design.|
|WAC 51-50-2406||Section 2406 -- Safety glazing.|
|WAC 51-50-3002||Section 3002 -- Hoistway enclosures.|
|WAC 51-50-3003||Section 3003 -- Emergency operations.|
|WAC 51-50-3005||Section 3005 -- Conveying systems.|