WSR 08-01-110

PERMANENT RULES

BUILDING CODE COUNCIL


[ Filed December 18, 2007, 1:50 p.m. , effective April 1, 2008 ]


Effective Date of Rule: April 1, 2008.

Purpose: To amend portions of chapter 51-50 WAC, the 2006 International Building Code.

Citation of Existing Rules Affected by this Order: Amending WAC 51-50-0200, 51-50-0310, 51-50-0903, 51-50-1403, 51-50-1607, 51-50-1613, and 51-50-3001.

Statutory Authority for Adoption: RCW 19.27.190 and 19.27.020.

Other Authority: Chapters 19.27 and 34.05 RCW.

Adopted under notice filed as WSR 07-16-025 on July 23 [20], 2007.

Changes Other than Editing from Proposed to Adopted Version: The amendments proposed to sections 308, 406, 702, 704, 705, 2702, and Table 2902.1 were not adopted.

Number of Sections Adopted in Order to Comply with Federal Statute: New 0, Amended 0, Repealed 0; Federal Rules or Standards: New 0, Amended 0, Repealed 0; or Recently Enacted State Statutes: New 0, Amended 2, Repealed 0.

Number of Sections Adopted at Request of a Nongovernmental Entity: New 0, Amended 5, Repealed 0.

Number of Sections Adopted on the Agency's Own Initiative: New 0, Amended 1, Repealed 0.

Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 0, Amended 0, Repealed 0.

Number of Sections Adopted Using Negotiated Rule Making: New 0, Amended 0, Repealed 0; Pilot Rule Making: New 0, Amended 0, Repealed 0; or Other Alternative Rule Making: New 0, Amended 7, Repealed 0.

Date Adopted: November 9, 2007.

John P. Neff

Council Chair

OTS-9883.3


AMENDATORY SECTION(Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)

WAC 51-50-0200   Chapter 2 -- Definitions.  


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.)) An A-2 Occupancy use under the 2006 International Building Code in which the aggregate area of concentrated use of unfixed chairs and standing space that is specifically designated and primarily used for dancing or viewing performers exceeds three hundred fifty square feet, excluding adjacent lobby areas. "Nightclub" does not include theaters with fixed seating, banquet halls, or lodge halls.


PORTABLE SCHOOL CLASSROOM. See Section 902.1.


RESIDENTIAL CARE/ASSISTED LIVING FACILITIES. See Section 310.2. This definition is not adopted.


STORY. That portion of a building included between the upper surface of a floor and the upper surface of the floor or roof next above, including basements (also see "Mezzanine" and Section 502.1). It is measured as the vertical distance from top to top of two successive tiers of beams or finished floor surfaces and, for the topmost story, from the top of the floor finish to the top of the ceiling joists or, where there is not a ceiling, to the top of the roof rafters.


STORY ABOVE GRADE PLANE. Any story having its finished floor surface entirely above grade plane, except that a basement shall be considered as a story above grade plane where the finished surface of the floor or roof next above the basement is:

1. More than 6 feet (1829 mm) above grade plane; or

2. More than 12 feet (3658 mm) above the finished ground level at any point.

[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, 51-50-0200, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, 51-50-0200, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, 51-50-0200, filed 12/17/03, effective 7/1/04.]


AMENDATORY SECTION(Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)

WAC 51-50-0310   Section 310 -- Residential Group R.  


310.1 Residential Group R. Residential Group R includes, among others, the use of a building or structure, or a portion thereof, for sleeping purposes when not classified as an Institutional Group I or when not regulated by the International Residential Code in accordance with Section 101.2. Residential occupancies shall include the following:


R-1 Residential occupancies containing sleeping units where the occupants are primarily transient in nature, including:

Boarding houses (transient)

Hotels (transient)

Motels (transient)


R-2 Residential occupancies containing sleeping units or more than two dwelling units where the occupants are primarily permanent in nature, including:

Apartment houses

Boarding houses (not transient)

Boarding homes as licensed by department of social and health services under chapter 388-78A WAC

Convents

Dormitories

Fraternities and sororities

Hotels (nontransient)

Monasteries

Motels (nontransient)

Residential treatment facilities as licensed by department of health under chapter 246-337 WAC

Vacation timeshare properties

Congregate living facilities with sixteen or fewer occupants are permitted to comply with the construction requirements for Group R-3.


R-3 Residential occupancies where the occupants are primarily permanent in nature and not classified as 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, or congregate living facilities with sixteen or fewer persons. Adult family homes and family child day care homes, or adult and child care facilities that are 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 classification is not adopted. Any reference in this code to R-4 does not apply.



310.2 Definitions.


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. This definition is not adopted.

[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, 51-50-0310, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, 51-50-0310, filed 12/17/03, effective 7/1/04.]


AMENDATORY SECTION(Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)

WAC 51-50-0903   Section 903 -- Automatic sprinkler systems.  


903.2.1.6 Nightclub. An automatic sprinkler system shall be provided throughout ((an occupancy with a nightclub)) Group A-2 nightclubs as defined in this code. An existing nightclub((s)) constructed prior to July 1, 2006, shall be provided with automatic sprinklers not later than December 1, ((2007)) 2009. ((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.


EXCEPTIONS: 1. Portable school classrooms, provided aggregate area of any cluster or portion of a cluster of portable school classrooms does not exceed 5,000 square feet (1465 m2); and clusters of portable school classrooms shall be separated as required in chapter 5 of the building code.
2. Group E occupancies with an occupant load of 50 or less.

903.2.7 Group R. An automatic fire sprinkler system installed in accordance with Section 903.3 shall be provided throughout all buildings with a Group R fire area.


EXCEPTION: Group R-1 if all of the following conditions apply:
1. The Group R fire area is no more than 500 square feet and is used for recreational use only.
2. The Group R fire area is only one story.
3. The Group R fire area does not include a basement.
4. The Group R fire area is no closer than 30 feet from another structure.
5. Cooking is not allowed within the Group R fire area.
6. The Group R fire area has an occupant load of no more than 8.
7. A hand held (portable) fire extinguisher is in every Group R fire area.

[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, 51-50-0903, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, 51-50-0903, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, 51-50-0903, filed 12/17/03, effective 7/1/04.]


NEW SECTION
WAC 51-50-1403   Section 1403 -- Performance requirements.  


1403.2 Weather protection. Exterior walls shall provide the building with a weather-resistant exterior wall envelope. The exterior wall envelope shall include flashing as described in Section 1405.3. The exterior wall envelope shall be designed and constructed in such a manner as to prevent the accumulation of water within the wall assembly by providing a water-resistant barrier behind the exterior veneer, as described in Section 1404.2, and a means of draining water that enters the assembly to the exterior. An air space cavity is not required under the exterior cladding for an exterior wall clad with panel siding made of plywood, engineered wood, hardboard, or fiber cement.


EXCEPTIONS: 1. A weather-resistant exterior wall envelope shall not be required over concrete or masonry walls designed in accordance with Chapters 19 and 21, respectively.
2. Compliance with the requirements for a means of drainage, and the requirements of Sections 1404.2 and 1405.3, shall not be required for an exterior wall envelope that has been demonstrated through testing to resist wind-driven rain, including joints, penetrations and intersections with dissimilar materials, in accordance with ASTM E 331 under the following conditions:
2.1 Exterior wall envelope test assemblies shall include at least one opening, one control joint, one wall/eave interface and one wall sill. All tested openings and penetrations shall be representative of the intended end-use configuration.
2.2 Exterior wall envelope test assemblies shall be at least 4 feet by 8 feet (1219 mm by 2438 mm) in size.
2.3 Exterior wall envelope assemblies shall be tested at a minimum differential pressure of 6.24 pounds per square foot (psf) (0.297 kN/m2).
2.4 Exterior wall envelope assemblies shall be subjected to a minimum test exposure duration of 2 hours.
The exterior wall envelope design shall be considered to resist wind-driven rain where the results of testing indicate that water did not penetrate control joints in the exterior wall envelope, joints at the perimeter of openings or intersections of terminations with dissimilar materials.

[]


AMENDATORY SECTION(Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)

WAC 51-50-1607   Section 1607 -- Live loads.  


IBC Table 1607.1 MINIMUM UNIFORMLY DISTRIBUTED LIVE LOADS AND MINIMUM CONCENTRATED LIVE LOADS

OCCUPANCY OR USE UNIFORM (psf) CONCENTRATED (psf)
4. Assembly areas and theaters
Fixed seats (fastened to floor) 60
Follow spot, projections, and control rooms 50
Lobbies 100 --------
Movable seats 100
Stages and platforms 125
Other assembly areas 100
5. (Reserved) --------
9. Decksh and Balconies Same as occupancy served --------
28. Residential
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

[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, 51-50-1607, filed 12/19/06, effective 7/1/07.]


NEW SECTION
WAC 51-50-1613   Section 1613 -- Earthquake loads.  


1613.7 Modification of ASCE 7. ASCE 7-05 including Supplement #1 is modified according to this section.


1613.7.1 The following equations found in Section 12.8 and Section 15.4 expressing limitations for the seismic response coefficient Cs shall be defined as follows:


Equation 12.8-5 Cs = 0.044SDSI≥0.01
Equation 15.4-1 Cs = 0.044SDSI≥0.03
Equation 15.4-3 Cs = 0.044SDSI≥0.01

[]


AMENDATORY SECTION(Amending WSR 07-01-091, filed 12/19/06, effective 7/1/07)

WAC 51-50-3001   Section 3001 -- General.  


3001.1 Scope. This chapter governs the design, construction, installation, alteration and repair of elevators and conveying systems and their components.


3001.2 Referenced standards. Except as otherwise provided for in this code, the design, construction, installation, alteration, repair and maintenance of elevators and conveying systems and their components shall conform to ASME A17.1, ASME A90.1, ASME B20.1, ALI ALCTV, and ASCE 24 for construction in flood hazard areas established in Section 1612.3.


3001.3 Accessibility. Passenger elevators required to be accessible by Chapter 11 shall conform to ICC A117.1.


3001.4 Change in use. A change in use of an elevator from freight to passenger, passenger to freight, or from one freight class to another freight class shall comply with Part XII of ASME A17.1.


Section 3002 -- Hoistway enclosures.


3002.4 Elevator car to accommodate ambulance stretcher. In buildings four stories in height or more, and in buildings which are required to have an elevator and contain Group R-1, R-2 or I Occupancies on a level other than the exit discharge level, at least one elevator shall be provided for fire department emergency access to all floors. Such elevator car shall be of such a size and arrangement to accommodate a 24-inch by 84-inch (610 mm by 2134 mm) ambulance stretcher in the horizontal, open position and shall be identified by the international symbol for emergency medical services (star of life). The symbol shall not be less than 3 inches (76 mm) high and shall be placed inside on both sides of the hoistway door frame.

[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, 51-50-3001, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, 51-50-3001, filed 12/17/03, effective 7/1/04.]

Washington State Code Reviser's Office