PERMANENT RULES
Effective Date of Rule: July 1, 2013.
Purpose: The proposed rules will adopt and amend the 2012 edition of the International Building Code for all jurisdictions in the state. State amendments to the base codes were developed to more closely meet the needs of Washington state local jurisdictions that enforce the code and to ensure fairness to small business in the state.
Citation of Existing Rules Affected by this Order: Amending chapter 51-50 WAC.
Statutory Authority for Adoption: RCW 19.27.031.
Other Authority: Chapters 19.27 and 34.05 RCW.
Adopted under notice filed as WSR 12-16-089 on July 31, 2012.
Changes Other than Editing from Proposed to Adopted Version:
| • | WAC 51-50-0202, amended definitions proposed for "exit access ramp" and "exit access stairway" were not adopted as proposed earlier. Additional changes were made to ensure consistency between the Building and Fire Codes. |
| • | WAC 51-50-0308, provides new definitions for "24-hour care" and "hospice care center." |
| • | WAC 51-50-1008, amended language related to special locking arrangements in psychiatric treatment areas, to be consistent with the 2012 IBC. |
| • | WAC 51-50-1018, amended the language on corridor continuity and access stairways or ramps, to be consistent with 2012 IBC. |
| • | WAC 51-50-1204, amended language to reference department of ecology requirements for certain fuel-buring [burning] devices. |
| • | WAC 51-50-1901, 51-50-1903, 51-50-1904, re: Concrete, are amended for consistency with the IBC language and standards (ACI 318) being adopted through the International Code Council. |
| • | WAC 51-50-2902, modified Table 2902.1 to remove obsolete footnote references. |
A final cost-benefit analysis is available by contacting Tim Nogler, P.O. Box 41449, Olympia, WA 98504-1449, phone (360) 407-9277, fax (360) 586-9088, e-mail Tim.Nogler@des.wa.gov.
Number of Sections Adopted in Order to Comply with Federal Statute: New 0, Amended 0, Repealed 0; Federal Rules or Standards: New 0, Amended 0, Repealed 0; or Recently Enacted State Statutes: New 0, Amended 0, Repealed 0.
Number of Sections Adopted at Request of a Nongovernmental Entity: New 0, Amended 0, Repealed 0.
Number of Sections Adopted on the Agency's Own Initiative: New 0, Amended 0, Repealed 0.
Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 0, Amended 0, Repealed 0.
Number of Sections Adopted Using Negotiated Rule Making: New 0, Amended 0, Repealed 0; Pilot Rule Making: New 0, Amended 0, Repealed 0; or Other Alternative Rule Making: New 21, Amended 66, Repealed 0.
Date Adopted: November 9, 2012.
C. Ray Allshouse
Council Chair
OTS-4860.4
AMENDATORY SECTION(Amending WSR 10-03-097, filed 1/20/10,
effective 7/1/10)
WAC 51-50-003
International Building Code.
The ((2009))
2012 edition of the International Building Code, including
Appendix E, published by the International Code Council is
hereby adopted by reference with the exceptions noted in this
chapter of the Washington Administrative Code.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-003, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-003, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-003, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 04-18-033, § 51-50-003, filed 8/25/04, effective 9/25/04. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-003, filed 12/17/03, effective 7/1/04.]
Pursuant to RCW 19.27.040, Chapter 11 and requirements affecting barrier-free access shall not be amended by local governments.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-005, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-005, 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 ((2009)) 2012 International Existing Building Code is
included in the adoption of this code in Section 3401.5 and
amended in WAC 51-50-480000.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-007, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-007, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-007, filed 12/17/03, effective 7/1/04.]
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-008, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-008, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-008, filed 12/17/03, effective 7/1/04.]
SECTION 202 -- DEFINITIONS.
ADULT FAMILY HOME. ((See Section 310.2.)) A dwelling, licensed
by Washington state, in which a person or persons provide
personal care, special care, room and board to more than one
but not more than six adults who are not related by blood or
marriage to the person or persons providing the services.
((AIR-PERMEABLE)) AIR-IMPERMEABLE INSULATION. An insulation having an
air permeance equal to or less than 0.02 L/s-m2 at 75 Pa
pressure differential tested in accordance with ASTM E2178 or
ASTM E283.
CHILD ((DAY)) CARE. ((See Section 310.2.)) The care of children
during any period of a 24-hour day.
CHILD ((DAY)) CARE ((HOME)), FAMILY HOME. ((See Section 310.2.)) A
child care facility, licensed by Washington state, located in
the dwelling of the person or persons under whose direct care
and supervision the child is placed, for the care of twelve or
fewer children, including children who reside at the home.
HOSPICE CARE CENTER. A building or portion thereof used on a
24-hour basis for the provision of hospice services to
terminally ill inpatients.
NIGHTCLUB. An A-2 Occupancy use under the 2006 International
Building Code in which the aggregate area of concentrated use
of unfixed chairs and standing space that is specifically
designated and primarily used for dancing or viewing
performers exceeds three hundred fifty square feet, excluding
adjacent lobby areas. "Nightclub" does not include theaters
with fixed seating, banquet halls, or lodge halls.
NONSTRUCTURAL CONCRETE. Any element made of plain or reinforced
concrete that is not part of a structural system required to
transfer either gravity or lateral loads to the ground.
PORTABLE SCHOOL CLASSROOM. ((See Section 902.1.
RESIDENTIAL CARE/ASSISTED LIVING FACILITIES. See Section 310.2. This
definition is not adopted.)) A structure, transportable in one
or more sections, which requires a chassis to be transported,
and is designed to be used as an educational space with or
without a permanent foundation. The structure shall be
trailerable and capable of being demounted and relocated to
other locations as needs arise.
SMALL BUSINESS. Any business entity (including a sole
proprietorship, corporation, partnership or other legal
entity) which is owned and operated independently from all
other businesses, which has the purpose of making a profit,
and which has fifty or fewer employees.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0200, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-0200, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0200, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-0200, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0200, filed 12/17/03, effective 7/1/04.]
((305.2 Day Care. The use of a building or structure, or
portion thereof, for educational, supervision or personal care
services for more than five children older than 2 1/2 years of
age, shall be classified as a Group E Occupancy.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0305, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0305, filed 12/17/03, effective 7/1/04.]
((308.1 Institutional Group I. Institutional Group I
Occupancy includes, among others, the use of a building or
structure, or a portion thereof, in which people are cared for
or live in a supervised environment, having physical
limitations because of health or age are harbored for medical
treatment or other care or treatment, or in which people are
detained for penal or correctional purposes or in which the
liberty of the occupants is restricted. Institutional
occupancies shall be classified as Group I-1, I-2, I-3 or I-4.
308.2 Group I-1. This occupancy shall include buildings,
structures or parts thereof housing more than 16 persons, on a
24-hour basis, who because of age, mental disability or other
reasons, live in a supervised residential environment that
provides personal care services. The occupants are capable of
responding to an emergency situation without physical
assistance from staff. This group shall include, but not be
limited to, the following:
Residential board and care facilities
Assisted living facilities
Halfway houses
Group homes
Congregate care facilities
Social rehabilitation facilities
Alcohol and drug centers
Convalescent facilities
A facility such as the above with five or fewer persons and adult family homes licensed by Washington state shall be classified as a Group R-3 or shall comply with the International Residential Code in accordance with Section 101.2.
A facility such as the above, providing licensed care to clients in one of the categories listed in Section 310.1 licensed by Washington state shall be classified as Group R-2.
308.3)) 308.2 Definitions. The following terms are defined in
Chapter 2:
24-HOUR CARE.
Custodial Care.
Detoxification Facilities.
Foster Care Facilities.
HOSPICE CARE CENTER.
Hospitals and psychiatric hospitals.
Incapable of self-preservation.
Medical care.
Nursing homes.
308.3.2 Licensed care facilities. Assisted living facilities
as licensed by Washington state under chapter 388-78A WAC and
residential treatment facilities as licensed by Washington
state under chapter 246-337 WAC shall be classified as Group
R-2.
308.3.3 Adult family homes. Adult family homes licensed by
Washington state shall be classified as Group R-3 or shall
comply with the International Residential Code.
308.4 Group I-2. This occupancy shall include buildings and
structures used for medical((, surgical, psychiatric, nursing
or custodial care for)) care on a 24-hour basis for more than
five persons who are ((not capable)) incapable of
self-preservation. This group shall include, but not be
limited to, the following:
((Child)) Foster care facilities.
Detoxification facilities.
Hospice care centers.
Hospitals.
((Mental hospitals))
Nursing homes.
Psychiatric hospitals.
((A facility such as the above providing licensed care to
clients in one of the categories listed in Section 310.1
licensed by Washington state shall be classified as Group R-2.
308.3.1 Definitions. The following words and terms shall, for
the purposes of this section and as used elsewhere in this
code, have the meanings shown herein.
CHILD CARE FACILITIES. Facilities that provide care on a 24-hour
basis to more than five children, 2 1/2 years of age or less,
shall be classified as Group I-2.
DETOXIFICATION FACILITY. Facilities that serve patients who are
provided treatment for substance abuse on a 24-hour basis and
who are incapable of self-preservation or who are harmful to
themselves or others.
HOSPITALS AND MENTAL HOSPITALS. A building or portion thereof used
on a 24-hour basis for the medical, psychiatric, obstetrical
or surgical treatment of inpatients who are incapable of
self-preservation.
NURSING HOMES. Nursing homes are long-term care facilities on a
24-hour basis, including both intermediate care facilities and
skilled nursing facilities, serving more than five persons and
any of the persons are incapable of self-preservation.
HOSPICE CARE CENTER. A building or portion thereof used on a
24-hour basis for the provision of hospice services to
terminally ill inpatients.
308.5.2 Child care facility. A facility that provides
supervision and personal care on a less than 24-hour basis for
more than five children 2 1/2 years of age or less shall be
classified as Group I-4.
308.6.5 Family home child care. Family home child care
licensed by Washington state for the care of twelve or fewer
children shall be classified as Group R-3 or shall comply with
the International Residential Code.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0308, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0308, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0308, filed 12/17/03, effective 7/1/04.]
((310.1 Residential Group R. Residential Group R includes,
among others, the use of a building or structure, or a portion
thereof, for sleeping purposes when not classified as an
Institutional Group I or when not regulated by the
International Residential Code in accordance with Section
101.2. Residential occupancies shall include the following:
R-1. Residential occupancies containing sleeping units where
the occupants are primarily transient in nature, including:
Boarding houses (transient)
Hotels (transient)
Motels (transient)
Congregate living facilities (transient) with 10 or fewer occupants are permitted to comply with the construction requirements for Group R-3.))
310.2 Definitions. The following terms are defined in Chapter
2:
ADULT FAMILY HOME.
BOARDING HOUSE.
CHILD CARE.
CHILD CARE, FAMILY HOME.
CONGREGATE LIVING FACILITIES.
DORMITORY.
GROUP HOME.
PERSONAL CARE SERVICE.
TRANSIENT.
310.4 Residential Group R-2. Residential occupancies
containing sleeping units or more than two dwelling units
where the occupants are primarily permanent in nature,
including:
Apartment houses
Assisted living facilities as licensed by Washington state under chapter 388-78A WAC
Boarding houses (((not transient)) nontransient) with
more than 16 occupants
((Boarding homes as licensed by Washington state under
chapter 388-78A WAC))
Congregate living facilities (nontransient) with more than 16 occupants
Convents
Dormitories
Fraternities and sororities
Hotels (nontransient)
Live/work units
Monasteries
Motels (nontransient)
Residential treatment facilities as licensed by Washington state under chapter 246-337 WAC
Vacation timeshare properties
((Congregate living facilities with sixteen or fewer
occupants are permitted to comply with the construction
requirements for Group R-3.
R-3. Residential occupancies where the occupants are
primarily permanent in nature and not classified as Group R-1,
R-2, R-4 or I, including:
Buildings that do not contain more than two dwelling units. Adult care facilities that provide accommodations for five or fewer persons of any age for less than 24 hours.
Child care facilities that provide accommodations for five or fewer persons of any age for less than 24 hours.
Congregate living facilities with sixteen or fewer persons.
Adult care within a single-family home, adult family homes and family child day care homes are permitted to comply with the International Residential Code.
Foster family care homes licensed by Washington state are permitted to comply with the International Residential Code, as an accessory use to a dwelling, for six or fewer children including those of the resident family.))
310.5.2 Adult family homes, family home child care. Adult
family homes and family home child care facilities that are
within a single-family home are permitted to comply with the
International Residential Code.
310.5.3 Foster family care homes. Foster family care homes
licensed by Washington state are permitted to comply with the
International Residential Code, as an accessory use to a
dwelling, for six or fewer children including those of the
resident family.
R-4 classification is not adopted. Any reference in this
code to R-4 does not apply.
((310.2 Definitions. The following words and terms shall, for
the purposes of this section and as used elsewhere in this
code, have the meanings shown herein.
ADULT FAMILY HOME. A dwelling, licensed by Washington state, in
which a person or persons provide personal care, special care,
room and board to more than one but not more than six adults
who are not related by blood or marriage to the person or
persons providing the services.
BOARDING HOUSE. A building arranged or used for lodging for
compensation, with or without meals, and not occupied as a
single family unit.
CHILD DAY CARE. For the purposes of these regulations, is the
care of children during any period of a 24-hour day.
CHILD DAY CARE HOME, FAMILY. A child day care facility, licensed
by Washington state, located in the dwelling of the person or
persons under whose direct care and supervision the child is
placed, for the care of twelve or fewer children, including
children who reside at the home.
CONGREGATE LIVING FACILITIES. A building or part thereof that
contains sleeping units where residents share bathroom and/or
kitchen facilities.
DORMITORY. A space in a building where group sleeping
accommodations are provided in one room, or in a series of
closely associated rooms, for persons not members of the same
family group, under joint occupancy and single management, as
in college dormitories or fraternity houses.
PERSONAL CARE SERVICE. The care of residents who do not require
chronic or convalescent medical or nursing care. Personal
care involves responsibility for safety of the resident while
inside the building.
RESIDENTIAL CARE/ASSISTED LIVING FACILITIES. This definition is not
adopted.
TRANSIENT. Occupancy of a dwelling or sleeping unit for not
more than 30 days.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0310, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-0310, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0310, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0310, filed 12/17/03, effective 7/1/04.]
403.5.4 Smokeproof exit enclosures. Every required exit
stairway serving floors more than 75 feet (22,860 mm) above
the lowest level of fire department vehicle access shall
((comply)) be a smokeproof enclosure in accordance with
Sections 909.20 and ((1022.9)) 1022.10.
| EXCEPTION: | Unless required by other sections of this code, portions of such stairways which extend to serve floors
below the level of exit discharge need not comply with Sections 909.20 and (( |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0403, filed 1/20/10, effective 7/1/10.]
407.4.3.2 Separation. Care suites shall be separated from
other portions of the building by a smoke partition complying
with Section 710. Partitions within suites are not required
to be smoke resistant or fire resistance rated unless required
by another section of this code.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0407, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0407, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-0407, filed 12/2/04, effective 7/1/05.]
((420.4)) 420.6 Subdivision of building spaces -- Smoke
barriers. Smoke barriers complying with Section ((710)) 709
shall be installed on all floors ((other than the level of
exit discharge)) of a Group R-2 boarding home or residential
treatment facility licensed by Washington state((, where a
fire-resistance rated corridor is required by Table 1018.1)). The smoke barrier shall subdivide the floor into at least two
compartments complying with Section ((407.4)) 407.5.
420.7 Adult family homes. This section shall apply to all
newly constructed adult family homes and all existing
single-family homes being converted to adult family homes.
This section shall not apply to those adult family homes
licensed by the state of Washington department of social and
health services prior to July 1, 2001.
420.7.1 Submittal standards. In addition to the requirements
of Section 107, the submittal shall identify the project as a
Group R-3 adult family home occupancy. A floor plan shall be
submitted identifying the means of egress and the components
in the means of egress such as stairs, ramps, platform lifts
and elevators. The plans shall indicate the rooms used for
clients and the sleeping room classification of each room.
420.7.2 Sleeping room classification. Each sleeping room in
an adult family home shall be classified as one of the
following:
1. Type S - Where the means of egress contains stairs, elevators or platform lifts.
2. Type NS1 - Where one means of egress is at grade level or a ramp constructed in accordance with Section 420.7.8 is provided.
3. Type NS2 - Where two means of egress are at grade level or ramps constructed in accordance with Section 420.7.8 are provided.
420.7.3 Types of locking devices and door activation. All
bedrooms and bathroom doors shall be openable from the outside
when locked.
Every closet door shall be readily openable from the inside.
Operable parts of door handles, pulls, latches, locks and other devices installed in adult family homes shall be operable with one hand and shall not require tight grasping, pinching, or twisting of the wrist. Pocket doors shall have graspable hardware available when in the closed or open position.
The force required to activate operable parts shall be 5.0 pounds (22.2 N) maximum. Required exit door(s) shall have no additional locking devices. Required exit door hardware shall unlock inside and outside mechanisms when exiting the building allowing reentry into the adult family home without the use of a key, tool or special knowledge.
420.7.4 Smoke and carbon monoxide alarm requirements. All
adult family homes shall be equipped with smoke and carbon
monoxide alarms installed as required in Section 908.7.
Alarms shall be installed in such a manner so that the
detection device warning is audible from all areas of the
dwelling upon activation of a single alarm.
420.7.5 Escape windows and doors. Every sleeping room shall
be provided with emergency escape and rescue windows as
required by Section 1029. No alternatives to the sill height
such as steps, raised platforms or other devices placed by the
openings will be approved as meeting this requirement.
420.7.6 Fire apparatus access roads and water supply for fire
protection. Adult family homes shall be served by fire
apparatus access roads and water supplies meeting the
requirements of the local jurisdiction.
420.7.7 Grab bar general requirements. Where facilities are
designated for use by adult family home clients, grab bars for
water closets, bathtubs and shower stalls shall be installed
according to this section.
420.7.7.1 Grab bar cross section. Grab bars with a circular
cross section shall have an outside diameter of 1 1/4 inches
minimum and 2 inches maximum. Grab bars with noncircular
cross section shall have a cross section dimension of 2 inches
maximum and a perimeter dimension of 4 inches minimum and 4
5/8 inches maximum.
420.7.7.2 Grab Bar Installation. Grab bars shall have a
spacing of 1 1/2 inches between the wall and the bar.
Projecting objects, control valves and bathtub or shower stall
enclosure features above, below and at the ends of the grab
bar shall have a clear space of 1 1/2 inches to the grab bar.
| EXCEPTION: | Swing-up grab bars shall not be required to meet the 1 1/2 inch spacing requirement. |
Fixed position grab bars, when mounted, shall not rotate, spin or move and have a graspable surface finish.
420.7.7.3 Grab Bars at Water Closets. Water closets shall
have grab bars mounted on both sides. Grab bars can be a
combination of fixed position and swing-up bars. Grab bars
shall meet the requirements of Section 420.7.7. Grab bars
shall mount between 33 inches and 36 inches above floor grade.
Centerline distance between grab bars, regardless of type
used, shall be between 25 inches minimum and 30 inches
maximum.
420.7.7.3.1 Fixed position grab bars. Fixed position grab
bars shall be a minimum of 36 inches in length and start 12
inches from the rear wall.
420.7.7.3.2 Swing-up grab bars. Swing-up grab bars shall be a
minimum of 28 inches in length from the rear wall.
420.7.7.4 Grab bars at bathtubs. Horizontal and vertical grab
bars shall meet the requirements of Section 420.7.7.
420.7.7.4.1 Vertical grab bars. Vertical grab bars shall be a
minimum of 18 inches long and installed at the control end
wall and head end wall. Grab bars shall mount within 4 inches
of the exterior of the bath tub edge or within 4 inches within
the bath tub. The bottom end of the bar shall start between
36 inches and 42 inches above floor grade.
| EXCEPTION: | The required vertical grab bar can be substituted with a floor to ceiling grab bar meeting the requirements of Section 420.7.7 at the control end and head end entry points. |
420.7.7.5 Grab bars at shower stalls. Where shower stalls are
provided to meet the requirements for bathing facilities, grab
bars shall meet the requirements of Section 420.7.7.
| EXCEPTION: | Shower stalls with permanent built-in seats are not required to have vertical or horizontal grab bars at the seat end wall. A vertical floor to ceiling grab bar shall be installed within 4 inches of the exterior of the shower aligned with the nose of the built-in seat. |
420.7.7.5.2 Horizontal grab bars. Horizontal grab bars shall
be installed on all sides of the shower stall mounted between
33 inches and 36 inches above the floor grade. Horizontal
grab bars shall be a maximum of 6 inches from adjacent walls.
Horizontal grab bars shall not interfere with shower control
valves.
420.7.8 Ramps. All interior and exterior ramps, when
provided, shall be constructed in accordance with Section 1010
with a maximum slope of 1 vertical to 12 horizontal.
| EXCEPTION: | Where it is technically infeasible to comply with Section 1010, ramps in existing buildings being converted to use as adult family homes shall be permitted to comply with the following: |
| 1. They shall have a maximum slope of 1 unit vertical in 12 units horizontal (8 percent slope). | |
| 2. Landings of at least 3 feet by 3 feet (914 mm by 914 mm) shall be provided at the top and bottom of the ramp, where doors open onto the ramp, and where the ramp changes direction. |
| EXCEPTION: | Where it is technically infeasible to comply with Section 1010.9, ramps in existing buildings being converted to use as adult family homes shall be permitted to comply with the following: |
| 1. Handrails shall be installed on both sides of ramps with a rise of more than 6 inches and a slope between 1 vertical to 12 horizontal and 1 vertical and 20 horizontal. | |
| 2. Handrail height, measured above the finished surface of the ramp slope, shall be not less than 34 inches (864 mm) and not more than 38 inches (965 mm). | |
| 3. Handrails shall comply with Section 1012.3. | |
| 4. Handrails where required on ramps shall be continuous for the full length of the ramp. Handrail ends shall be returned or shall terminate in newel posts or safety terminals. Handrails adjacent to a wall shall have a space of not less than 1 1/2 inches (38 mm) between the wall and the handrails. |
| EXCEPTION: | Where it is technically infeasible to comply with Section 1009, stair treads and risers in existing buildings being converted to use as adult family homes shall be permitted to comply with the following: |
| 1. The maximum riser height shall be 7 3/4 inches (196 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Risers shall be vertical or sloped from the underside of the nosing of the tread above at an angle not more than 30 degrees (0.51 rad) from the vertical. Open risers are permitted provided that the opening between treads does not permit the passage of a 4-inch-diameter (102 mm) sphere. The opening between adjacent treads is not limited on stairs with a total rise of 30 inches (762 mm) or less. | |
| 2. The minimum tread depth shall be 10 inches (254 mm). The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). | |
| 3. Winder treads shall have a minimum tread depth of 10 inches (254 mm) measured between the vertical planes of the foremost projection of adjacent treads at the intersections with the walkline. Winder treads shall have a minimum tread depth of 6 inches (152 mm) at any point within the clear width of the stair. Within any flight of stairs, the largest winder tread depth at the walkline shall not exceed the smallest winder tread by more than 3/8 inch (9.5 mm). Consistently shaped winders at the walkline shall be allowed within the same flight of stairs as rectangular treads and do not have to be within 3/8 inch (9.5 mm) of the rectangular tread depth. | |
| 4. The radius of curvature at the nosing shall be no greater than 9/16 inch (14 mm). A nosing not less than 3/4 inch (19 mm) but not more than 1 1/4 inches (32 mm) shall be provided on stairways with solid risers. The greatest nosing projection shall not exceed the smallest nosing projection by more than 3/8 inch (9.5 mm) between two stories, including the nosing at the level of floors and landings. Beveling of nosings shall not exceed 1/2 inch (12.7 mm). A nosing is not required where the tread depth is a minimum of 11 inches (279 mm). |
420.7.10 Shower stalls. Where provided to meet the
requirements for bathing facilities, the minimum size of
shower stalls for an adult family home shall be 30 inches deep
by 48 inches long.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0420, filed 1/20/10, effective 7/1/10.]
((422.1 General. Occupancies classified as ambulatory health
care facilities shall comply with the provisions of Sections
422.1 through 422.7 and other applicable provisions of this
code by the services provided.
422.2 Separation. Ambulatory health care facilities where
four or more care recipients are rendered incapable of
self-preservation at any given time shall be separated from
adjacent spaces, corridors or tenants with a fire partition
installed in accordance with Section 709.
422.3 Smoke compartments. Where the aggregate area of one or
more ambulatory health care facility exceeds 10,000 square
feet on one story, the story shall be provided with a smoke
barrier to subdivide the story into not less than two smoke
compartments. Smoke barriers shall be installed in accordance
with Section 710. The area of any one such smoke compartment
shall not exceed 22,500 square feet (2092 m2). The travel
distance from any point in a smoke compartment to a smoke
barrier door shall not exceed 200 feet (60,960 mm).
422.5 Independent egress. A means of egress shall be provided
from each smoke compartment created by smoke barriers without
having to return through the smoke compartment from which
means of egress originated.
422.6 Automatic sprinkler systems. Automatic sprinkler
systems shall be provided for ambulatory care facilities in
accordance with Section 903.2.2.
422.7 Fire alarm systems. A fire alarm system shall be
provided for ambulatory health care facilities in accordance
with Section 907.2.2.1.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0422, filed 1/20/10, effective 7/1/10.]
504.3 Stair enclosure pressurization increase. For Group R1
and R2 occupancies in buildings of Type VA construction
equipped throughout with an approved automatic sprinkler
system in accordance with Section 903.3.1.1, the maximum
number of stories permitted in Section 504.2 may be increased
by one provided the interior exit stairways and ramps are
pressurized in accordance with Section 909.20 and Section
909.11.
504.4 Roof structures. (Same as ((2009)) 2012 IBC except
Section number revised)
[Statutory Authority: Chapter 19.27 RCW. 10-24-059, § 51-50-0504, filed 11/29/10, effective 7/1/11.]
506.4 Single occupancy buildings with more than one story.
The total allowable building area of a single occupancy
building with more than one story above grade plane shall be
determined in accordance with this section. The actual
aggregate building area at all stories in the building shall
not exceed the total allowable building area.
| EXCEPTION: | Basements (( |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0506, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0506, filed 12/19/06, effective 7/1/07.]
Incidental Uses
| Room or Area | Separation and/or Protection |
| Dry type transformers over 112.5 kVA and required to be in a fire resistant room per NEC (NFPA 70) Section 450.21 (B)1 | 1 hour or provide automatic sprinkler system |
| 1 Dry type transformers rated over 35,000 volts and oil-insulated transformers shall be installed in a transformer vault complying with NFPA 70. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0509, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0509, filed 12/19/06, effective 7/1/07.]
708.14.2.13 Machine rooms. Elevator machine rooms shall be
pressurized in accordance with this section unless separated
from the hoistway shaft by construction in accordance with
Section 707.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, amended and recodified as § 51-50-0708, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0707, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0707, filed 12/17/03, effective 7/1/04.]
((710.4 Continuity. Smoke barriers shall form an effective
membrane continuous from outside wall to outside wall and from
the top of the foundation or floor/ceiling assembly below to
the underside of the floor or roof sheathing, deck or slab
above, including continuity through concealed spaces, such as
those found above suspended ceiling, and interstitial
structural and mechanical spaces. The supporting construction
shall be protected to afford the required fire-resistance
rating of the wall or floor supported in buildings of other
than Type IIB, IIIB, or VB construction.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0710, filed 1/20/10, effective 7/1/10.]
((902.1 Definitions.
PORTABLE SCHOOL CLASSROOM. A structure, transportable in one or
more sections, which requires a chassis to be transported, and
is designed to be used as an educational space with or without
a permanent foundation. The structure shall be trailerable
and capable of being demounted and relocated to other
locations as needs arise.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0902, filed 12/17/03, effective 7/1/04.]
903.2.1.6 Nightclub. An automatic sprinkler system shall be
provided throughout Group A-2 nightclubs as defined in this
code.
903.2.3 Group E. An automatic sprinkler system shall be
provided for Group E Occupancies.
| EXCEPTIONS: | 1. Portable school classrooms with an occupant load of 50 or less calculated in accordance with Table 1004.1.2, 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 by the building code. |
| 2. Group E occupancies with an occupant load of 50 or less, calculated in accordance with Table
(( |
1. A Group M fire area exceeds 12,000 square feet (1115 m2).
2. A Group M fire area is located more than three stories above grade plane.
3. The combined area of all Group M fire areas on all floors, including any mezzanines, exceeds 24,000 square feet (2230 m2).
4. Where a Group M occupancy that is used for the display and sale of upholstered furniture or mattresses exceeds 5000 square feet (464 m2).
903.2.8 Group R. An automatic fire sprinkler system installed
in accordance with Section 903.3 shall be provided throughout
all buildings with a Group R fire area.
| 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: Chapter 19.27 RCW. 10-24-059, § 51-50-0903, filed 11/29/10, effective 7/1/11. Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0903, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-0903, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0903, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-0903, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0903, filed 12/17/03, effective 7/1/04.]
[F] 908.7 Carbon monoxide alarms. Group I or Group R occupancies shall be provided with single station carbon monoxide alarms installed outside of each separate sleeping area in the immediate vicinity of the bedrooms in dwelling units or sleeping units and on each level of the dwelling. The carbon monoxide alarms shall be listed as complying with UL 2034 and be installed and maintained in accordance with NFPA 720-2012 and the manufacturer's instructions.
| EXCEPTIONS: | 1. For other than R-3 occupancies, the building does not contain a fuel-burning appliance, a fuel-burning fireplace, or an attached garage; or |
| 2. Sleeping units or dwelling units in I and R-1 occupancies and R-2 college dormitories, hotel, and
DSHS licensed boarding home and residential treatment facility occupancies which do not themselves
contain a fuel-burning appliance, or a fuel-burning fireplace, or have an attached garage, (( |
|
| a. The sleeping unit or dwelling unit is not adjacent to any room which contains a fuel-burning appliance, a fuel-burning fireplace, or an attached garage; and | |
| (( |
|
| (( |
|
| (( |
[Statutory Authority: RCW 19.27.074 and 19.27.530. 12-01-099, § 51-50-0908, filed 12/20/11, effective 4/1/12.]
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040.
AMENDATORY SECTION(Amending WSR 10-03-097, filed 1/20/10,
effective 7/1/10)
WAC 51-50-0909
Section 909 -- Smoke control systems.
((909.6.3 Elevator shaft pressurization. Where elevator shaft
pressurization is required to comply with Exception 6 of
Section 708.14.1, the pressurization system shall comply with
and be maintained in accordance with 708.14.2.
909.6.3.1 Activation. The elevator shaft pressurization
system shall be activated by a fire alarm system which shall
include smoke detectors or other approved detectors located
near the elevator shaft on each floor as approved by the
building official and fire code official. If the building has
a fire alarm panel, detectors shall be connected to, with
power supplied by, the fire alarm panel.
909.6.3.2 Power system. The power source for the fire alarm
system and the elevator shaft pressurization system shall be
in accordance with Section 909.11.))
909.21.12 Hoistway venting. Hoistway venting required by
Section 3004 need not be provided for pressurized elevator
shafts.
909.21.13 Machine rooms. Elevator machine rooms shall be
pressurized in accordance with this section unless separated
from the hoistway shaft by construction in accordance with
Section 707.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-0909, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-0909, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-0909, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-0909, filed 12/17/03, effective 7/1/04.]
((1005.1 Minimum required egress width. The means of egress
width shall not be less than required by this section. The
total width of means of egress in inches (mm) shall not be
less than the total occupant load served by the means of
egress multiplied by 0.3 inches (7.62 mm) per occupant for
stairways and by 0.2 inches (5.08 mm) per occupant for other
egress components. The width shall not be less than specified
elsewhere in this code. Multiple means of egress shall be
sized such that the loss of any one means of egress shall not
reduce the available capacity to less than 50 percent of the
required capacity. The maximum capacity required from any
story of a building shall be maintained to the termination of
the means of egress.
[Statutory Authority: Chapter 19.27 RCW. 10-24-059, § 51-50-1005, filed 11/29/10, effective 7/1/11.]
1008.1.9.3 Locks and latches. Locks and latches shall be
permitted to prevent operation of doors where any of the
following exists:
1. Places of detention or restraint.
2. In buildings in occupancy Group A having an occupant load of 300 or less, Groups B, F, M and S, and in places of religious worship, the main exterior door or doors are permitted to be equipped with key-operated locking devices from the egress side provided:
2.1. The locking device is readily distinguishable as locked;
2.2. A readily visible and durable sign is posted on the egress side on or adjacent to the door stating: THIS DOOR TO REMAIN UNLOCKED WHEN BUILDING IS OCCUPIED. The sign shall be in letters 1 inch (25 mm) high on a contrasting background; and
2.3. The use of the key-operated locking device is revocable by the building official for due cause.
3. Where egress doors are used in pairs, approved automatic flush bolts shall be permitted to be used, provided that the door leaf having the automatic flush bolts has no doorknob or surface-mounted hardware.
4. Doors from individual dwelling or sleeping units of Group R occupancies having an occupant load of 10 or less are permitted to be equipped with a night latch, dead bolt, or security chain, provided such devices are openable from the inside without the use of a key or a tool.
5. Fire doors after the minimum elevated temperature has disabled the unlatching mechanism in accordance with listed fire door test procedures.
6. Approved, listed locks without delayed egress shall be permitted in Group R-2 boarding homes licensed by Washington state, provided that:
6.1. The clinical needs of one or more patients require specialized security measures for their safety.
6.2. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
6.3. The doors unlock upon loss of electrical power controlling the lock or lock mechanism.
6.4. The lock shall be capable of being deactivated by a signal from a switch located in an approved location.
6.5. There is a system, such as a keypad and code, in place that allows visitors, staff persons and appropriate residents to exit. Instructions for exiting shall be posted within six feet of the door.
1008.1.9.6 Special locking arrangements in Group I-2.
Approved special egress locks shall be permitted in a Group
I-2 Occupancy where the clinical needs of persons receiving
care require such locking. Special egress locks shall be
permitted in such occupancies where the building is equipped
throughout with an automatic sprinkler system in accordance
with Section 903.3.1.1 or an approved automatic smoke or heat
detection system installed in accordance with Section 907,
provided that the doors ((unlock)) are installed and operate
in accordance with Items 1 through ((6 below)) 7.
1. The doors unlock upon actuation of the automatic sprinkler system or automatic fire detection system.
2. The doors unlock upon loss of power controlling the lock or lock mechanism.
3. The door locks shall have the capability of being unlocked by a signal from the fire command center, a nursing station or other approved location.
4. A building occupant shall not be required to pass through more than one door equipped with a special egress lock before entering an exit.
5. The procedures for the operation(s) of the unlocking system shall be described and approved as part of the emergency planning and preparedness required by Chapter 4 of the International Fire Code.
((5.)) 6. There is a system, such as a keypad and code,
in place that allows visitors, staff persons and appropriate
residents to exit. Instructions for exiting shall be posted
within six feet of the door.
((6.)) 7. Emergency lighting shall be provided at the
door.
| EXCEPTION: | Items 1(( |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1008, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1008, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074, and chapters 19.27 and 34.05 RCW. 05-24-070, § 51-50-1008, filed 12/5/05, effective 7/1/06. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1008, filed 12/17/03, effective 7/1/04.]
1009.3 Exit access stairways. Floor openings between stories
created by exit access stairways shall be enclosed.
| EXCEPTIONS: | 1. In other than Group I-2 and I-3 occupancies, exit access stairways that serve, or atmospherically communicate between, only two stories are not required to be enclosed. Such interconnected stories shall not be open to other stories. |
| 2. Exit access stairways serving and contained within a single residential dwelling unit or sleeping unit in Group R-1, R-2 or R-3 occupancies are not required to be enclosed. | |
| 3. In Group B or M occupancies, exit access stairways that are designed exclusively for circulation are not required to be enclosed provided that the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, the area of the floor opening between stories does not exceed twice the horizontal projected area of the exit access stairway, and the opening is protected by a draft curtain and closely spaced sprinklers in accordance with NFPA 13. | |
| 4. In other than Group B and M occupancies, exit access stairways that are designed exclusively for circulation are not required to be enclosed provided that the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, the floor opening does not connect more than four stories, the area of the floor opening between stories does not exceed twice the horizontal projected area of the exit access stairway, and the opening is protected by a draft curtain and closely spaced sprinklers in accordance with NFPA 13. | |
| 5. Exit access stairways within an atrium complying with the provisions of Section 404 are not required to be enclosed. | |
| 6. Exit access stairways and ramps in open parking garages that serve only the parking garage are not required to be enclosed. | |
| 7. Stairways serving outdoor facilities where all portions of the means of egress are essentially open to the outside are not required to be enclosed. | |
| 8. Exit access stairways serving stages, platforms and technical production areas in accordance with Sections 410.6.2 and 410.6.3 are not required to be enclosed. | |
| 9. Stairways are permitted to be open between the balcony, gallery or press box and the main assembly floor in occupancies such as theaters, places of religious worship, auditoriums and sports facilities. | |
| 10. In group I-3 occupancies, exit access stairways constructed in accordance with Section 408.5 are not required to be enclosed. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1009, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1009, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1009, filed 12/17/03, effective 7/1/04.]
1010.1 Scope. The provisions of this section shall apply to
ramps used as a component of a means of egress.
| EXCEPTIONS: | 1. Other than ramps that are part of the accessible routes providing access in accordance with Sections 1108.2 through 1108.2.4 and 1108.2.6, ramped aisles within assembly rooms or spaces shall conform with the provisions in Section 1028.11. |
| 2. Curb ramps shall comply with ICC A117.1. | |
| 3. Vehicle ramps in parking garages for pedestrian exit access shall not be required to comply with
Sections (( |
|
| 4. In a parking garage where one accessible means of egress serving accessible parking spaces or other
accessible elements is provided, a second accessible means of egress serving that area may include a
vehicle ramp that does not comply with Sections (( |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-10100, filed 1/20/10, effective 7/1/10.]
((1014.2.2 Group I-2.
General. Habitable spaces and suites in Group I-2 occupancies
are permitted to comply with this Section 1014.2.2.
1014.2.2.1 Exit access doors. Habitable spaces and suites in
Group I-2 occupancies shall have an exit access door leading
directly to a corridor.
1014.2.2.3 Separation. Suites in Group I-2 Occupancies shall
be separated from other portions of the building by a smoke
partition complying with Section 711. Partitions within
suites are not required to be smoke-resistant or
fire-resistance-rated unless required by another section of
this Code.
1014.2.2.4 Suites containing patient sleeping areas. Patient
sleeping areas in Group I-2 Occupancies shall be permitted to
be divided into suites with one intervening room if one of the
following conditions is met:
1. The intervening room within the suite is not used as
an exit access for more than eight patient beds.
2. The arrangement of the suite allows for direct and
constant visual supervision by nursing personnel.
1014.2.2.4.1 Area. Suites of sleeping rooms shall not exceed
5,000 square feet (465 m2).
1014.2.2.4.2 Exit access. Any patient sleeping room, or any
suite that includes patient sleeping rooms, of more than 1,000
square feet (93 m2) shall have at least two exit access doors
located in accordance with Section 1015.2.
1014.2.2.4.3 Travel distance. The travel distance between any
point in a suite of sleeping rooms and an exit access door of
that suite shall not exceed 100 feet (30,480 mm). The travel
distance between any point in a Group I-2 Occupancy patient
sleeping room and an exit access door in that room shall not
exceed 50 feet (15,240 mm).
1014.2.2.5 Suites not containing patient sleeping areas.
Areas other than patient sleeping areas in Group I-2
Occupancies shall be permitted to be divided into suites that
comply with Sections 1014.2.2.5.1 through 1014.2.2.5.4.
1014.2.2.5.1 Area. Suites of rooms, other than patient
sleeping rooms, shall not exceed 10,000 square feet (929 m2).
1014.2.2.5.2 Exit access. Any rooms or suite of rooms, other
than patient sleeping rooms, of more than 2,500 square feet
(232 m2) shall have at least two exit access doors located in
accordance with Section 1015.2.
1014.2.2.5.3 One intervening room. For rooms other than
patient sleeping rooms, suites of rooms are permitted to have
one intervening room if the travel distance within the suite
to the exit access door is not greater than 100 feet (30,480
mm).
1014.2.2.5.4 Two intervening rooms. For rooms other than
patient sleeping rooms located within a suite, exit access
travel from within the suite shall be permitted through two
intervening rooms where the travel distance to the exit access
door is not greater than 50 feet (15,240 mm).))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1014, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1014, filed 12/19/06, effective 7/1/07.]
1018.5 Air movement in corridors. Corridors shall not serve
as supply, return, exhaust, relief or ventilation air ducts.
| EXCEPTIONS: | 1. Use of a corridor as a source of makeup air for exhaust systems in rooms that open directly onto such corridors, including toilet rooms, bathrooms, dressing rooms, smoking lounges and janitor closets, shall be permitted provided that each such corridor is directly supplied with outdoor air at a rate greater than the rate of makeup air taken from the corridor. |
| 2. Where located within a dwelling unit, the use of corridors for conveying return air shall not be prohibited. | |
| 3. Where located within tenant spaces of one thousand square feet (93 m2) or less in area, utilization of corridors for conveying return air is permitted. | |
| 4. Incidental air movement from pressurized rooms within health care facilities, provided that a corridor is not the primary source of supply or return to the room. | |
| 5. Where such air is part of an engineered smoke control system. | |
| 6. Air supplied to corridors serving residential occupancies shall not be considered as providing ventilation air to the dwelling units subject to the following: | |
| 6.1 The air supplied to the corridor is one hundred percent outside air; and | |
| 6.2 The units served by the corridor have conforming ventilation air independent of the air supplied to the corridor; and | |
| 6.3 For other than high-rise buildings, the supply fan will automatically shut off upon activation of corridor smoke detectors which shall be spaced at no more than thirty feet (9,144 mm) on center along the corridor; or | |
| 6.4 For high-rise buildings, corridor smoke detector activation will close required smoke/fire dampers at the supply inlet to the corridor at the floor receiving the alarm. |
| EXCEPTIONS: | 1. Foyers, lobbies or reception rooms constructed as required for corridors shall not be construed as intervening rooms. |
| 2. In Group R-2 boarding homes and residential treatment facilities licensed by Washington state, seating areas shall be allowed to be open to the corridor provided: | |
| 2.1 The seating area is constructed as required for the corridor; | |
| 2.2 The floor is separated into at least two compartments complying with Section (( |
|
| 2.3 Each individual seating area does not exceed 150 square feet, excluding the corridor width; | |
| 2.4 The combined total space of seating areas per compartment does not exceed 300 square feet, excluding the corridor width; | |
| 2.5 Combustible furnishings located within the seating area shall be in accordance with the International Fire Code Section 805; and | |
| 2.6 Emergency means of egress lighting is provided as required by Section 1006 to illuminate the area. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, amended and recodified as § 51-50-1018, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1017, filed 12/19/06, effective 7/1/07.]
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).))
1101.2.2 (ICC A117.1 Section 403.5) Clear width of accessible
route. Clear width of an accessible route shall comply with
ICC A117.1 ((Table)) Section 403.5. For exterior routes of
travel, the minimum clear width shall be 44 inches (1118 mm).
1101.2.3 (ICC A117.1 Section 404.2.8) Door-opening force.
Fire doors shall have the minimum opening force allowable by
the appropriate administrative authority. The force for
pushing or pulling open doors other than fire doors shall be
as follows:
1. Interior hinged door: 5.0 pounds (22.2 N) maximum
2. Interior sliding or folding doors: 5.0 pounds (22.2 N) maximum
3. Exterior hinged, sliding or folding door: 10 pounds (44.4 N) maximum.
| EXCEPTION: | Interior or exterior automatic doors complying with Section 404.3 of ICC ANSI A117.1. |
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 A117.1 603.4) 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 floor.
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)) 603.6.
1101.2.8 (ICC A117.1 Section 604.6) Flush controls. Flush
controls shall be hand operated or automatic. Hand operated
flush controls shall comply with Section 309, except the
maximum height above the floor shall be 44 inches. Flush
controls shall be located on the open side of the water
closet.
| EXCEPTION: | In ambulatory accessible compartments complying with Section (( |
1101.2.9 (ICC A117.1 Section 703.6.3.1) International Symbol
of Accessibility. Where the International Symbol of
Accessibility is required, it shall be proportioned complying
with ICC A117.1 Figure 703.6.3.1. All interior and exterior
signs depicting the International Symbol of Accessibility
shall be white on a blue background.
((1101.2.10 (ICC A117.1 Section 404.3.5) Control switches.
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 control
switch.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1101, 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, § 51-50-1101, 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.]
((1106.3 Group I-2 outpatient facilities. Ten percent, but
not less than one, of patient and visitor parking spaces
provided to serve Group I-2 outpatient facilities shall be
accessible.))
1106.6 Location. Accessible parking spaces shall be located
on the shortest accessible route of travel from adjacent
parking to an accessible building entrance. In parking
facilities that do not serve a particular building, accessible
parking spaces shall be located on the shortest route to an
accessible pedestrian entrance to the parking facility. Where
buildings have multiple accessible entrances with adjacent
parking, accessible parking spaces shall be dispersed and
located near the accessible entrances. Wherever practical,
the accessible route shall not cross lanes of vehicular
traffic. Where crossing traffic lanes is necessary, the route
shall be designated and marked as a crosswalk.
| EXCEPTION: | 1. In multilevel parking structures, van accessible parking spaces are permitted on one level. |
| 2. Accessible parking spaces shall be permitted to be located in different parking facilities if substantially equivalent or greater accessibility is provided in terms of distance from an accessible entrance or entrances, parking fee and user convenience. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1106, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1106, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1106, filed 12/17/03, effective 7/1/04.]
1107.6 Group R. Accessible units, Type A units and Type B
units shall be provided in Group R Occupancies in accordance
with Sections 1107.6.1 through 1107.6.4. Accessible and Type
A units shall be apportioned among efficiency dwelling units,
single bedroom units and multiple bedroom units, in proportion
to the numbers of such units in the building.
1107.6.2.1.1 Type A units. In Group R-2 Occupancies
containing more than 10 dwelling units or sleeping units, at
least 5 percent, but not less than one, of the units shall be
a Type A unit. All units on a site shall be considered to
determine the total number of units and the required number of
Type A units. Type A units shall be dispersed among the
various classes of units, as described in Section 1107.6.
| EXCEPTIONS: | 1. The number of Type A units is permitted to be reduced in accordance with Section 1107.7. |
| 2. Existing structures on a site shall not contribute to the total number of units on a site. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1107, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1107, filed 12/17/03, effective 7/1/04.]
1203.1 General. Buildings shall be provided with natural
ventilation in accordance with Section 1203.4, or mechanical
ventilation in accordance with the International Mechanical
Code.
1203.2 Attic spaces. Enclosed attics and enclosed rafter
spaces formed where ceilings are applied directly to the
underside of roof framing members shall have cross ventilation
for each separate space by ((ventilating)) ventilation
openings protected against the entrance of rain and snow. Blocking and bridging shall be arranged so as not to interfere
with the movement of air. ((A minimum of)) An airspace of not
less than 1 inch (25 mm) ((of airspace)) shall be provided
between the insulation and the roof sheathing. The net free
ventilating area shall not be less than 1/150th of the area of
the space ventilated((, with 50 percent of the required
ventilating area provided by ventilators located in the upper
portion of the space to be ventilated at least 3 feet (914 mm)
above eave or cornice vents with the balance of the required
ventilation provided by eave or cornice vents)).
| EXCEPTIONS: | 1. The (( |
| 2. The net free cross-ventilation area shall be permitted to be reduced to 1/300 where a Class I or II vapor retarder is installed on the warm-in-winter side of the ceiling. | |
| 3. Attic ventilation shall not be required when determined not necessary by the building official due to atmospheric or climatic conditions. | |
| 4. Unvented attic assemblies (spaces between the ceiling joists of the top story and the roof rafters) shall be permitted if all the following conditions are met: | |
| (( |
|
| (( |
|
| (( |
|
| (( |
|
| (( |
|
| a. Air-impermeable insulation only. Insulation shall be applied in direct contact to the underside of the structural roof sheathing. | |
| b. Air-permeable insulation only. In addition to the air-permeable insulation installed directly below
the structural sheathing, rigid board or sheet insulation shall be installed directly above the structural
roof sheathing as specified (( |
|
| (( |
|
| c. Air-impermeable and air-permeable insulation. The air-impermeable insulation shall be applied in
direct contact to the underside of the structural roof sheathing as specified (( |
|
| i. Climate Zone #1 - R-10 minimum rigid board or air-impermeable insulation R-value. | |
| ii. Climate Zone #2 - R-25 minimum rigid board or air-impermeable insulation R-value. | |
| d. Where preformed insulation board is used as the air-impermeable insulation layer, it shall be sealed at the perimeter of each individual sheet interior surface to form a continuous layer. |
Insulation for Condensation Control
| CLIMATE ZONE | MINIMUM RIGID BOARD ON AIR-IMPERMEABLE INSULATION R-VALUEa | ||
| 4C | R-15 | ||
| 5B | R-20 | ||
| 6B | R-25 | ||
| a Contributes to but does not supercede the requirements for insulation in the Washington State Energy Code (WAC 51-11). |
1203.6 Radon resistive construction standards. The criteria
of this section establishes minimum radon resistive
construction requirements for Group R Occupancies.
1203.6.1 Application. The requirements of Section 1203.6
shall be adopted and enforced by all jurisdictions of the
state according to the following subsections.
1203.6.1.1 All jurisdictions of the state shall comply with
Section 1203.6.2.
1203.6.1.2 Clark, Ferry, Okanogan, Pend Oreille, Skamania,
Spokane, and Stevens counties shall also comply with Section
1203.6.3.
1203.6.2 State wide radon requirements.
1203.6.2.1 Crawlspaces. All crawlspaces shall comply with the
requirements of this section.
1203.6.2.2 Ventilation. All crawlspaces shall be ventilated
as specified in Section 1203.3.
If the installed ventilation in a crawlspace is less than one square foot for each 300 square feet of crawlspace area, or if the crawlspace vents are equipped with operable louvers, a radon vent shall be installed to originate from a point between the ground cover and soil. The radon vent shall be installed in accordance with Sections 1203.6.3.2.6 and 1203.6.3.2.7.
1203.6.2.3 Crawlspace plenum systems. In crawlspace plenum
systems used for providing supply air for an HVAC system,
aggregate, a permanently sealed soil gas retarder membrane and
a radon vent pipe shall be installed in accordance with
Section 1203.6.3.2. Crawlspaces shall not be used for return
air plenums.
In addition, an operable radon vent fan shall be installed and activated. The fan shall be located as specified in Section 1203.6.3.2.7. The fan shall be capable of providing at least 100 cfm at 1-inch water column static pressure. The fan shall be controlled by a readily accessible manual switch. The switch shall be labeled "RADON VENT FAN."
1203.6.3 Radon prescriptive requirements.
1203.6.3.1 Scope. This section applies to those counties
specified in Section 1203.6.1.2. This section establishes
prescriptive construction requirements for reducing the
potential for radon entry into all Group R Occupancies, and
for preparing the building for future mitigation if desired.
In all crawlspaces, except crawlspace plenums used for providing supply air for an HVAC system, a continuous air barrier shall be installed between the crawlspace area and the occupied area to limit air transport between the areas. If a wood sheet subfloor or other material is utilized as an air barrier, in addition to the requirements of Section 502.1.6.2 of the Washington State Energy Code, all joints between sheets shall be sealed.
1203.6.3.2 Floors in contact with the earth.
1203.6.3.2.1 General. Concrete slabs that are in direct
contact with the building envelope shall comply with the
requirements of this section.
| EXCEPTION: | Concrete slabs located under garages or other than Group R Occupancies need not comply with this chapter. |
1203.6.3.2.3 Gradation. Aggregate shall:
1. Comply with ASTM Standard C-33 Standard Specification for Concrete Aggregate and shall be size No. 8 or larger size aggregate as listed in Table 2, Grading Requirements for Course Aggregate; or
2. Meet the 1988 Washington State Department of Transportation Specification 9-03.1 (3) "Coarse Aggregate for Portland Cement Concrete," or any equivalent successor standards. Aggregate size shall be of Grade 8 or larger as listed in Section 9-03.1 (3) C, "Grading"; or
3. Be screened, washed pea gravel free of deleterious substances in a manner consistent with ASTM Standard C-33 with 100 percent passing a 1/2-inch sieve and less than 5 percent passing a No. 16 sieve. Sieve characteristics shall conform to those acceptable under ASTM Standard C-33.
| EXCEPTION: | Aggregate shall not be required if a substitute material or system, with sufficient load bearing characteristics, and having approved capability to provide equal or superior air flow, is installed. |
1203.6.3.2.5 Sealing of penetrations and joints. All
penetrations and joints in concrete slabs or other floor
systems and walls below grade shall be sealed by an approved
sealant to create an air barrier to limit the movement of
soil-gas into the indoor air.
Sealants shall be approved by the manufacturer for the intended purpose. Sealant joints shall conform to manufacturer's specifications. The sealant shall be placed and tooled in accordance with manufacturer's specifications. There shall be no gaps or voids after the sealant has cured.
1203.6.3.2.6 Radon vent. One continuous sealed pipe shall run
from a point within the aggregate under each concrete slab to
a point outside the building. Joints and connections shall be
permanently gas tight. The continuous sealed pipe shall
interface with the aggregate in the following manner, or by
other approved equal method. The pipe shall be permanently
connected to a "T" within the aggregate area so that the two
end openings of the "T" lie within the aggregate area. A
minimum of 5 feet of perforated drain pipe of 3 inches minimum
diameter shall join to and extend from the "T." The
perforated pipe shall remain in the aggregate area and shall
not be capped at the ends. The "T" and its perforated pipe
extensions shall be located at least 5 feet horizontally from
the exterior perimeter of the aggregate area.
The continuous sealed pipe shall terminate no less than 12 inches above the eave, and more than 10 horizontal feet from a woodstove or fireplace chimney, or operable window. The continuous sealed pipe shall be labeled "radon vent." The label shall be placed so as to remain visible to an occupant.
The minimum pipe diameter shall be 3 inches unless otherwise approved. Acceptable sealed plastic pipe shall be smooth walled, and may include either PVC schedule 40 or ABS schedule of equivalent wall thickness.
The entire sealed pipe system shall be sloped to drain to the subslab aggregate.
The sealed pipe system may pass through an unconditioned attic before exiting the building; but to the extent practicable, the sealed pipe shall be located inside the thermal envelope of the building in order to enhance passive stack venting.
| EXCEPTION: | A fan for subslab depressurization system includes the following: |
| 1. Soil-gas retarder membrane as specified in Section 1203.6.3.2.4; | |
| 2. Sealing of penetrations and joints as specified in Section 1203.6.3.2.5; | |
| 3. A 3-inch continuous sealed radon pipe shall run from a point within the aggregate under each concrete slab to a point outside the building; | |
| 4. Joints and connections shall be gas tight, and may be of either PVC schedule 40 or ABS schedule of equivalent in wall thickness; | |
| 5. A label of "radon vent" shall be placed on the pipe so as to remain visible to an occupant; | |
| 6. Fan circuit and wiring as specified in Section 1203.6.3.2.7 and a fan. |
1203.6.3.2.7 Fan circuit and wiring and location. An area for
location of an in-line fan shall be provided. The location
shall be as close as practicable to the radon vent pipe's
point of exit from the building, or shall be outside the
building shell; and shall be located so that the fan and all
downstream piping is isolated from the indoor air.
Provisions shall be made to allow future activation of an in-line fan on the radon vent pipe without the need to place new wiring. A 110 volt power supply shall be provided at a junction box near the fan location.
1203.6.3.2.8 Separate aggregate areas. If the 4-inch
aggregate area underneath the concrete slab is not continuous,
but is separated into distinct isolated aggregate areas by a
footing or other barrier, a minimum of one radon vent pipe
shall be installed into each separate aggregate area.
| EXCEPTION: | Separate aggregate areas may be considered a single area if a minimum 3-inch diameter connection joining the separate areas is provided for every 30 feet of barrier separating those areas. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1203, filed 1/20/10, effective 7/1/10; 04-01-108, § 51-50-1203, 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. |
DESIGNATED AREAS are those areas designated by a county to be an
urban growth area in chapter 36.70A RCW and those areas
designated by the U.S. Environmental Protection Agency as
being in nonattainment for particulate matter.
SUBSTANTIALLY REMODELED means any alteration or restoration of a
building exceeding 60 percent of the appraised value of such
building within a 12-month period. For the purpose of this
section, the appraised value is the estimated cost to replace
the building and structure in-kind, based on current
replacement costs.
1204.2.2 Primary heating source. Primary heating sources in
all new and substantially remodeled buildings in designated
areas shall not be dependent upon wood stoves.
1204.2.3 Solid fuel burning devices. No new or used solid
fuel burning device shall be installed in new or existing
buildings unless such device is United States Environmental
Protection Agency certified ((or a pellet stove either
certified)) or exempt from certification by the United States
Environmental Protection Agency and conforms with RCW 70.94.011, 70.94.450, 70.94.453 and 70.94.457.
| EXCEPTION: | (( |
| 2. Antique wood heaters manufactured prior to 1940. |
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1204, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1204, filed 12/17/03, effective 7/1/04.]
1208.2 Minimum ceiling heights. Occupiable spaces and
habitable spaces shall have a ceiling height of not less than
7 feet 6 inches (2286 mm). Bathrooms, toilet rooms, kitchen,
storage rooms and laundry rooms shall be permitted to have a
ceiling height of not less than 7 feet (2134 mm).
| EXCEPTIONS: | 1. In one- and two-family dwellings, beams or girders spaced not less than 4 feet (1219 mm) on center
(( |
| 2. If any room in a building has a sloped ceiling, the prescribed ceiling height for the room is required in one-half the area thereof. Any portion of the room measuring less than 5 feet (1524 mm) from the finished floor to the ceiling shall not be included in any computation of the minimum area thereof. | |
| 3. The height of mezzanines (( |
| EXCEPTION: | Kitchens (( |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1208, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-1208, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1208, filed 12/17/03, effective 7/1/04.]
((1210.5)) 1210.4 Toilet rooms. This section is not adopted.
(The requirements of this section have been moved to
Section ((2902.2.1.1)) 2902.3.1.1)
[Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-1210, filed 12/2/04, effective 7/1/05.]
1403.2 Weather protection. Exterior walls shall provide the
building with a weather-resistant exterior wall envelope. The
exterior wall envelope shall include flashing as described in
Section 1405.4. The exterior wall envelope shall be designed
and constructed in such a manner as to prevent the
accumulation of water within the wall assembly by providing a
water-resistant barrier behind the exterior veneer, as
described in Section 1404.2, and a means ((of)) for draining
water that enters the assembly to the exterior. An air space
cavity is not required under the exterior cladding for an
exterior wall clad with lapped or panel siding made of
plywood, engineered wood, hardboard, or fiber cement. Protection against condensation in the exterior wall assembly
shall be provided in accordance with Section 1405.3.
| 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 (( |
|
| 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. | |
| 3. Exterior insulation and finish systems (EIFS) complying with Section 1408.4.1. |
| EXCEPTION: | Walls that contain less than 500 gm/m2 combustible material and where the water-resistive barrier has a flame spread index of 25 or less and a smoke-developed index of 450 or less as determined in accordance with ASTM E 84 or UL 723. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1403, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-1403, filed 12/18/07, effective 4/1/08.]
((1405.6.2 Seismic requirements. Anchored masonry veneer
located in Seismic Design Category C, D, E, or F shall conform
to the requirements of Section 6.2.2.10, except Section
6.2.2.10.3.2, of TMS 402/ACI 530/ASCE 5.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1405, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1405, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-1405, filed 12/2/04, effective 7/1/05.]
((1609.1.1 Determination of wind loads. Wind loads on every
building or structure shall be determined in accordance with
Chapter 6 of ASCE 7 or provisions of the alternate all-heights
method in Section 1609.6. The type of opening protection
required, the basic wind speed and the exposure category for a
site is permitted to be determined in accordance with Section
1609 or ASCE 7. Wind shall be assumed to come from any
horizontal direction and wind pressures shall be assumed to
act normal to the surface considered.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-1609, filed 1/20/10, effective 7/1/10.]
1702.1 ((General.)) Definitions. The following terms are
defined in Chapter 2: (add terms from 2012 IBC pg 379)
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 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1702, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-1702, filed 12/17/03, effective 7/1/04.]
Modify Table 1705.3. Remainder of Table 1705.3 remains as
published in the 2012 IBC.
Required Verification and Inspection of Concrete Construction
| Verification and Inspection | Continuous | Periodic | Referenced Standarda | IBC Reference |
| 3. Inspection of anchors cast in concrete. | ------- | X | ACI 318: D.9.2 | |
| 4. Inspection of anchors post-installed in hardened concrete membersb. | ||||
| a. Adhesive anchors installed in horizontally or upwardly inclined orientations to resist sustained tension loads. | X | ---------- | ACI 318: D.9.2.4 | |
| b. Mechanical anchors and adhesive anchors not defined in 4a. | ---------- | X | ACI 318: D.9.2 |
| a. Where applicable, see also Section 1705.11, Special inspections for seismic resistance. | |
| b. Specific requirements for special inspection shall be included in the research report for the anchor issued by an approved source in accordance with D.9.2 in ACI 318, or other qualification procedures. Where specific requirements are not provided, special inspection requirements shall be specified by the registered design professional and shall be approved by the building official prior to the commencement of the work. |
[]
1710.5 Exterior window and door assemblies. The design
pressure rating of exterior windows and doors in buildings
shall be determined in accordance with Section 1710.5.1 or
1710.5.2.
| EXCEPTIONS: | 1. Structural wind load design pressures for window units smaller than the size tested in accordance with Section 1710.5.1 or 1710.5.2 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 1710 of the International Building Code provided they meet the applicable provisions of Chapter 24 of the International Building Code. | |
[]
((1715.5 Exterior window and door assemblies. The design
pressure rating of exterior windows and doors in buildings
shall be determined in accordance with Section 1715.5.1 or
1715.5.2.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, amended and recodified as § 51-50-1715, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-1714, filed 12/19/06, effective 7/1/07.]
1901.2.1 Anchoring to concrete. Anchoring to concrete shall
be in accordance with ACI 318 as amended in Section 1905, and
applies to cast-in (headed bolts, headed studs, and hooked
J-or L-bolts) anchors and post-installed expansion
(torque-controlled and displacement-controlled), undercut, and
adhesive anchors.
[]
1903.1 General. Materials used to produce concrete, concrete
itself and testing thereof shall comply with the applicable
standards listed in ACI 318 where required, special
inspections and tests shall be in accordance with Chapter 17.
| EXCEPTION: | The following standards as referenced in Chapter 35 shall be permitted to be used. |
| 1. ASTM C 150 | |
| 2. ASTM C 595 | |
| 3. ASTM C 1157 |
[]
1904.1 Structural concrete. Structural concrete shall conform
to the durability requirements of ACI 318.
| EXCEPTION: | For Group R-2 and R-3 occupancies not more than three stories above grade plane, the specified compressive strength, f'c, for concrete in basement walls, foundation walls, exterior walls and other vertical surfaces exposed to the weather shall be not less than 3000 psi. |
[]
1905.1 General. The text of ACI 318 shall be modified as
indicated in Sections 1905.1.1 through 1905.1.10.
WALL PIER. This definition is not adopted.
21.4.3 - Connections that are designed to yield shall be
capable of maintaining 80 percent of their design strength at
the deformation induced by the design displacement or shall
use Type 2 mechanical splices.
21.4.4 - Elements of the connection that are not designed to
yield shall develop at least 1.5 Sy.
1905.1.4 ACI 318, Section 21.9. This section is not adopted.
1905.1.9 ACI 318, Section D.3.3.
Modify ACI 318 Sections D.3.3.4.2 and D.3.3.5.2 to read as
follows:
D.3.3.4.2 - Where the tensile component of the strength-level
earthquake force applied to anchors exceeds 20 percent of the
total factored anchor tensile force associated with the same
load combination, anchors and their attachments shall be
designed in accordance with D.3.3.4.3. The anchor design
tensile strength shall be determined in accordance with
D.3.3.4.4.
| EXCEPTIONS: | 1. Anchors designed to resist wall out-of-plane forces with design strengths equal to or greater than the force determined in accordance with ASCE 7 Equation 12.11-1 or 12.14-10 need not satisfy Section D.3.3.4.3. |
| 2. Anchors in concrete designed to support nonstructural components in accordance with ASCE 7 Section 13.4.2 need not satisfy Section D.3.3.4.3. |
| EXCEPTIONS: | 1. D.3.3.5.3 need not apply and the design shear strength in accordance with D.6.2.1(c) need not be computed for anchor bolts attaching wood sill plates of bearing or nonbearing walls of light-frame wood structures to foundations or foundation stem walls provided all of the following are satisfied: |
| 1.1. The allowable in-plane shear strength of the anchor is determined in accordance with AF&PANDS Table 11E for lateral design values parallel to grain. | |
| 1.2. The maximum anchor nominal diameter is 5/8 inches (16 mm). | |
| 1.3. Anchor bolts are embedded into concrete a minimum of 7 inches (178 mm). | |
| 1.4. Anchor bolts are located a minimum of 1 3/4 inches (45 mm) from the edge of the concrete parallel to the length of the wood sill plate. | |
| 1.5. Anchor bolts are located a minimum of 15 anchor diameters from the edge of the concrete perpendicular to the length of the wood sill plate. | |
| 1.6. The sill plate is 2-inch or 3-inch nominal thickness. | |
| 2. Section D.3.3.5.3 need not apply and the design shear strength in accordance with Section D.6.2.1(c) need not be computed for anchor bolts attaching cold-formed steel track of bearing or nonbearing walls of light-frame construction to foundations or foundation stem walls provided all of the following are satisfied: | |
| 2.1. The maximum anchor nominal diameter is 5/8 inches (16 mm). | |
| 2.2. Anchors are embedded into concrete a minimum of 7 inches (178 mm). | |
| 2.3. Anchors are located a minimum of 1 3/4 inches (45 mm) from the edge of the concrete parallel to the length of the track. | |
| 2.4. Anchors are located a minimum of 15 anchor diameters from the edge of the concrete perpendicular to the length of the track. | |
| 2.5. The track is 33 to 68 mil designation thickness. | |
| Allowable in-plane shear strength of exempt anchors, parallel to the edge of concrete shall be permitted to be determined in accordance with AISI S100 Section E3.3.1. | |
| 3. Anchors in concrete designed to support nonstructural components in accordance with ASCE 7 Section 13.4.2 need not satisfy Section D.3.3.5.3. | |
| 4. In light-frame construction, bearing or nonbearing walls, shear strength of concrete anchors less than or equal to 1 inch (25 mm) in diameter connecting sill plate or track to foundation or foundation stem wall need not satisfy D.3.3.5.3 when the design strength of the anchors is determined in accordance with D.6.2.1(c). |
D.4.2.2 - For anchors with diameters not exceeding 4 in., the
concrete breakout strength requirements shall be considered
satisfied by the design procedure of D.5.2 and D.6.2. For
anchors in shear with diameters exceeding 4 inches, shear
anchor reinforcement shall be provided in accordance with the
procedures of D.6.2.9.
[]
[]
[]
((2104.1 Masonry construction. Masonry construction shall
comply with the requirements of Sections 2104.1.1 through
2104.6 and with TMS 602/ACI 530.1/ASCE 6 except as modified by
Sections 2104.5 and 2104.6.
2104.5 TMS 602/ACI 530.1/ASCE 6, Article 3.5 D, grout lift
heights. Modify items 1.b, 1.c, and 2.b of Article 3.5 D as
follows:
3.5 D.1.b When the conditions of Articles 3.5 D.1.a.i and 3.5 D.1.a.ii are met but there are intermediate bond beams within the grout pour, limit the grout lift height to the bottom of the lowest bond beam that is more than 5.33 ft. (1.63 m) above the bottom of the lift, but do not exceed a grout lift height of 12.67 ft. (3.86 m).
3.5 D.1.c When the conditions of Article 3.5 D.1.a.i or Article 3.5 D.1.a.ii are not met, place grout in lifts not exceeding 5.33 ft. (1.63 m).
3.5 D.2.b When placed in masonry that has not cured for at least 4 hours, place in lifts not exceeding 5.33 ft. (1.63 m).
2104.6 TMS 602/ACI 530.1/ASCE 6, Article 3.2F, cleanouts.
Modify the first sentence of Article 3.2F as follows:
Provide cleanouts in the bottom course of masonry for each grout pour when the grout pour height exceeds 5.33 ft. (1.63 m).))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-2104, filed 1/20/10, effective 7/1/10.]
2107.1 General. The design of masonry structures using
allowable stress design shall comply with Sections 2106,
2107.2 and the requirements of Chapters 1 and 2 of TMS 402/ACI
530/ASCE 5 except as modified by Sections ((2107.3)) 2107.2
through 2107.5.
((2107.2 Load combinations. Structures and portions thereof
shall be designed to resist the most critical effects
resulting from the load combinations of Section 1605.3. When
using the alternative load combinations of Section 1605.3.2
that include wind or seismic loads, allowable stresses are
permitted to be increased by one-third.
2107.6 TMS 402/ACI 530/ASCE 5, Section 1.16.1 anchor bolts.
Modify the second paragraph of Section 1.16.1 as follows:
Anchor bolts placed in the top of grouted cells and bond beams
shall be positioned to maintain a minimum of 1/4 inch (6.4 mm)
of fine grout between the bolts and the masonry unit or 1/2
inch (12.7 mm) of coarse grout between the bolts and the
masonry unit. Anchor bolts placed in drilled holes in the
face shells of hollow masonry units shall be permitted to
contact the masonry unit where the bolt passes through the
face shell, but the portion of the bolt that is within the
grouted cell shall be positioned to maintain a minimum of 1/4
inch (6.4 mm) of fine grout between the head or bent leg of
the bolt and the masonry unit or 1/2 inch (12.7 mm) of coarse
grout between the head or bent leg of the bolt and the masonry
unit.))
2107.2 TMS 402/ACI 530/ASCE 5, Section 2.1.8.7.1.1, lap
splices. In lieu of Section 2.1.8.7.1.1, it shall be
permitted to design lap splices in accordance with Section
2107.2.1.
2107.2.1 Lap splices. The minimum length of lap splices for
reinforcing bars in tension or compression, ld, shall be
ld = 0.002db fs (Equation 21-1)
| For SI: | ld | = | 0.29db fs |
| where: | ||
| db | = | Diameter of reinforcement, inches (mm). |
| fs | = | Computed stress in reinforcement due to design loads, psi (MPa). |
2107.5 TMS 402/ACI 530/ASCE 5. Modify Section 2.3.4 Axial
compression and flexure, as follows:
2.3.4.2.1 The compressive force in reinforced masonry due to
axial load only shall be permitted to not exceed that given by
Equation 2-21 or Equation 2-22.
(a) For members having an h/r ratio not greater than 99:
| Pa | = | (0.33 ƒ' mAn + 0.65AstFs) [1-(h/140r)2] | (Equation 2-21) |
| Pa | = | (0.33 ƒ' mAn + 0.65FsAst) (70r/h)2 | (Equation 2-22) |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-21070, filed 1/20/10, effective 7/1/10.]
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.
Reviser's note: RCW 34.05.395 requires the use of underlining and deletion marks to indicate amendments to existing rules. The rule published above varies from its predecessor in certain respects not indicated by the use of these markings.
AMENDATORY SECTION(Amending WSR 10-03-097, filed 1/20/10,
effective 7/1/10)
WAC 51-50-2108
Section 2108 -- ((Strength design of
masonry.)) Reserved.
((2108.4 TMS 402/ACI 530/ASCE 5, Section 3.1.6. Modify
Section 3.1.6 as follows:
3.1.6 Headed and bent-bar anchor bolts. All embedded bolts
shall be grouted in place, except that 1/4 inch (6.4 mm)
diameter bolts are permitted to be placed in bed joints that
are at least 1/2 inch (12.7 mm) in thickness.
2108.5 TMS 402/ACI 530/ASCE 5, Section 1.16.1 anchor bolts.
Modify the second paragraph of Section 1.16.1 as follows:
Anchor bolts placed in the top of grouted cells and bond beams
shall be positioned to maintain a minimum of 1/4 inch (6.4 mm)
of fine grout between the bolts and the masonry unit or 1/2
inch (12.7 mm) of coarse grout between the bolts and the
masonry unit. Anchor bolts placed in drilled holes in the
face shells of hollow masonry units shall be permitted to
contact the masonry unit where the bolt passes through the
face shell, but the portion of the bolt that is within the
grouted cell shall be positioned to maintain a minimum of 1/4
inch (6.4 mm) of fine grout between the head or bent leg of
the bolt and the masonry unit or 1/2 inch (12.7 mm) of coarse
grout between the head or bent leg of the bolt and the masonry
unit.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-2108, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-2108, filed 12/2/04, effective 7/1/05.]
2111.7 Fireplaces. Fireplaces shall be provided with each of
the following:
1. Tightly fitting flue dampers, operated by a readily accessible manual or approved automatic control.
| EXCEPTION: | Fireplaces with gas logs shall be installed in accordance with the International Mechanical Code Section 901, except that the standards for liquefied petroleum gas installations shall be NFPA 58 (Liquefied Petroleum Gas Code) and NFPA 54 (National Fuel Gas Code). |
| EXCEPTION: | Washington certified fireplaces shall be installed with the combustion air systems necessary for their
safe and efficient combustion and specified by the manufacturer in accordance with (( |
2111.7.1 Lintel and throat. Masonry over a fireplace opening
shall be supported by a lintel of noncombustible material.
The minimum required bearing length on each end of the
fireplace opening shall be 4 inches (102 mm). The fireplace
throat or damper shall be located a minimum of 8 inches (203
mm) above the top of the fireplace opening.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-2111, filed 1/20/10, effective 7/1/10.]
2114.1 Emission Standards for Factory-built Fireplaces.
((After January 1, 1997,)) No new or used factory-built
fireplace shall be installed in Washington state unless it is
certified and labeled in accordance with procedures and
criteria specified in ((the Washington State Building Code
Standard 31-2)) ASTM E2558 Standard Test Method for
determining particulate matter emission from fires in low mass
wood burning fireplaces.
To certify an entire fireplace model line, the internal assembly shall be tested to determine its particulate matter emission performance. Retesting and recertifying is required if the design and construction specifications of the fireplace model line internal assembly change. Testing for certification shall be performed by a Washington state department of ecology (DOE) approved and U.S. Environmental Protection Agency (EPA) accredited laboratory.
2114.2 Emission Standards for Certified Masonry and Concrete
Fireplaces. ((After January 1, 1997, new certified masonry or
concrete fireplaces installed in Washington state shall be
tested and labeled in accordance with procedures and criteria
specified in the Washington State Building Code Standard 31-2.
To certify an entire fireplace model line, the internal assembly shall be tested to determine its particulate matter emission performance. Retesting and recertifying is required if the design and construction specifications of the fireplace model line internal assembly change. Testing for certification shall be performed by a Washington state department of ecology (DOE) approved and U.S. Environmental Protection Agency (EPA) accredited laboratory.)) Masonry and concrete fireplace model lines certified to Washington State Building Code Standard 31-2 prior to July 1, 2013, may retain certification provided the design and construction specifications of the fireplace model line internal assembly do not change.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-2114, filed 12/17/03, effective 7/1/04.]
SECTION 2901 -- GENERAL.
2901.1 Scope. The provisions of this chapter and the state
plumbing code shall ((apply to the number of plumbing fixtures
and sanitation facilities to be provided in an occupancy
regulated by this Code)) govern the erection, installation,
alteration, repairs, relocation, replacement, addition to, use
or maintenance of plumbing equipment and systems. Toilet and
bathing rooms shall be constructed in accordance with Section
1210. Plumbing systems and equipment shall be constructed,
installed and maintained in accordance with the state plumbing
code.
2901.2 ((Minimum requirements. Plumbing fixtures and
sanitation facilities shall be provided in the minimum number
shown in Table 2902.1 and in this chapter. Where the proposed
occupancy is not listed in Table 2902.1, the building official
shall determine the fixture and facility requirements based on
the occupancy which most nearly resembles the proposed
occupancy. The number of occupants used for determining
minimum fixtures and facilities shall be computed at the rate
of one occupant per unit of net floor area as prescribed in
Table 2902.1.
Plumbing fixtures need not be provided for unoccupied buildings or facilities.)) Health codes. In food preparation, serving and related storage areas, additional fixture requirements may be dictated by health codes.
SECTION 2902 -- ((FIXTURES)) MINIMUM PLUMBING FACILITIES.
2902.1 Minimum number of fixtures. Plumbing fixtures shall be
provided for the type of occupancy and in the minimum number
shown in Table 2902.1. Types of occupancies not shown in
Table 2902.1 shall be determined individually by the building
official based on the occupancy which most nearly resembles
the proposed occupancy. The number of occupants shall be
determined by this code. Occupancy classification shall be
determined in accordance with Chapter 3. Plumbing fixtures
need not be provided for unoccupied buildings or facilities.
2902.1.1 Fixture calculations. To determine the occupant load
of each sex, the total occupant load shall be divided in half.
To determine the required number of fixtures, the fixture
ratio or ratios for each fixture type shall be applied to the
occupant load of each sex in accordance with Table 2902.1.
Fractional numbers resulting from applying the fixture ratios
of Table 2902.1 shall be rounded up to the next whole number.
For calculations involving multiple occupancies, such
fractional numbers for each occupancy shall first be summed
and then rounded up to the next whole number.
| EXCEPTION: | The total occupant load shall not be required to be divided in half where approved statistical data indicate a distribution of the sexes of other than 50 percent of each sex. |
2902.1.1.2 Urinals. Where urinals are provided, one water
closet less than the number specified may be provided for each
urinal installed, except the number of water closets in such
cases shall not be reduced to less than one quarter (25%) of
the minimum specified. For men's facilities serving 26 or
more persons, not less than one urinal shall be provided.
2902.1.2 ((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.
2902.1.3 Food preparation areas. In food preparation, serving
and related storage areas, additional fixture requirements may
be dictated by health codes.
2902.1.4 Other requirements. For other requirements for
plumbing facilities, see Section 1210 and Chapter 11.)) Family
or assisted-use toilet and bath fixtures. Fixtures located
within family or assisted-use toilet and bathing rooms
required by Section 1109.2.1 are permitted to be included in
the number of required fixtures for either the male or female
occupants in assembly and mercantile occupancies.
2902.2 ((Access to fixtures.)) Separate facilities. Where
plumbing fixtures are required, separate facilities shall be
provided for each sex.
| EXCEPTIONS: | 1. Separate facilities shall not be required for dwelling units and sleeping units. |
| 2. Separate facilities shall not be required in structures or tenant spaces with a total occupant load, including both employees and customers, of 15 or less. | |
| 3. Separate facilities shall not be required in mercantile occupancies in which the maximum occupant load is 100 or less. |
2902.2.1.1 Toilet rooms. Toilet rooms shall not open directly
into a room used for the preparation of food for service to
the public or residents of Group R-2 boarding homes and
residential treatment facilities licensed by Washington state.
2902.2.2 Multiple tenants. Access to toilets serving multiple
tenants shall be through a common use area and not through an
area controlled by a tenant.
2902.2.3 Multistory buildings. Required fixtures shall not be
located more than one vertical story above or below the area
served.
SECTION 2903 -- FACILITIES.
2903.3 Facilities.
2903.3.1 Requirements. Separate toilet facilities shall be
provided for each sex.
2903.4 Pay facilities. Required facilities shall be free of
charge. Where pay facilities are installed, they shall be in
addition to the minimum required facilities.
2903.5 is not adopted.
SECTION 2904 -- SPECIAL PROVISIONS.
2904.1 Dwelling units. Dwelling units shall be provided with
a kitchen sink.
2904.2 Water closet space requirements. The water closet
stool in all occupancies shall be located in a clear space not
less than 30 inches (762 mm) in width, with a clear space in
front of the stool of not less than 24 inches (610 mm).
2904.3 Water. Each required sink, lavatory, bathtub and
shower stall shall be equipped with hot and cold running water
necessary for its normal operation.
2904.4 Drinking fountains.
2904.4.1 Number. Occupant loads over 30 shall have one
drinking fountain for the first 150 occupants, then one per
each additional 500 occupants.
2904.4.3 Penal institutions. Penal institutions shall have
one drinking fountain on each cell block floor and one on each
exercise floor.
2904.4.4 Location. Drinking fountains shall not be located in
toilet rooms.
TABLE 2902.1 -- MINIMUM PLUMBING FIXTURES1,2,4,6
| (( |
(fixtures per person) |
(fixtures per person) |
(fixtures per person) |
||
Assembly places -- |
|||||
Theaters, auditoriums, convention halls, dance floors, lodge rooms, casinos, and such places which have limited time for fixture use (intermissions) |
|||||
Stadiums, arena and other sporting facilities where fixture use is not limited to intermissions |
|||||
and other clerical or administrative employee accessory use |
|||||
2902.3 Employee and public toilet facilities. Customers,
patrons and visitors shall be provided with public toilet
facilities in structures and tenant spaces intended for public
utilization. The number of plumbing fixtures located within
the required toilet facilities shall be provided in accordance
with Section 2902.1 for all users. Employees shall be
provided with toilet facilities in all occupancies. Employee
toilet facilities shall either be separate or combined
employee and public toilet facilities.
| EXCEPTION: | Public toilet facilities shall not be required in open or enclosed parking garages. Toilet facilities shall not be required in parking garages where there are no parking attendants. |
2902.3.1.1 Food preparation areas. Toilet rooms shall not
open directly into a room used for the preparation of food for
service to the public or residents of Group R-2 boarding homes
and residential treatment facilities licensed by Washington
state.
2902.3.2 Location of toilet facilities in occupancies other
than malls. In occupancies other than covered and open mall
buildings, the required public and employee toilet facilities
shall be located in each building not more than one story
above or below the space required to be provided with toilet
facilities, or conveniently in a building adjacent thereto on
the same property, and the path of travel to such facilities
shall not exceed a distance of 500 feet (152 m).
| EXCEPTION: | The location and maximum travel distances to required employee facilities in factory and industrial occupancies are permitted to exceed that required by this section, provided that the location and maximum travel distance are approved. |
2902.3.4 Pay facilities. Where pay facilities are installed,
such facilities shall be in excess of the required minimum
facilities. Required facilities shall be free of charge.
2902.3.5 Door locking. Where a toilet room is provided for
the use of multiple occupants, the egress door for the room
shall not be lockable from the inside of the room. This
section does not apply to family or assisted-use toilet rooms.
2902.4 Signage. Required public facilities shall be
designated by a legible sign for each sex. Signs shall be
readily visible and located near the entrance to each toilet
facility. Signs for accessible toilet facilities shall comply
with Section 1110.
2902.4.1 Directional signage. Directional signage indicating
the route to the public facilities shall be posted in
accordance with Section 3107. Such signage shall be located
in a corridor or aisle, at the entrance to the facilities for
customers and visitors.
2902.5 Drinking fountain location. Drinking fountains shall
not be required to be located in individual tenant spaces
provided that public drinking fountains are located within a
travel distance of 500 feet of the most remote location in the
tenant space and not more than one story above or below the
tenant space. Where the tenant space is in a covered or open
mall, such distance shall not exceed 300 feet. Drinking
fountains shall be located on an accessible route. Drinking
fountains shall not be located in toilet rooms.
2902.5.1 Drinking fountain number. Occupant loads over 30
shall have one drinking fountain for the first 150 occupants,
then one per each additional 500 occupants.
| 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. |
2902.5.3 Penal institutions. Penal institutions shall have
one drinking fountain on each cell block floor and one on each
exercise floor.
2902.6 Dwelling units. Dwelling units shall be provided with
a kitchen sink.
2902.7 Water closet space requirements. The water closet
stool in all occupancies shall be located in a clear space not
less than 30 inches (762 mm) in width, with a clear space in
front of the stool of not less than 24 inches (610 mm).
2902.8 Water. Each required sink, lavatory, bathtub and
shower stall shall be equipped with hot and cold running water
necessary for its normal operation.
SECTION 2903 -- RESERVED.
SECTION 2904 -- RESERVED.
Minimum Number of Required Plumbing Fixturesa (See Sections 2902.2 and 2902.3)
| No. | Classification | Occupancy | Description | Water Closets | Lavatories | Bathtubs /Showers |
||
| Male | Female | Male | Female | |||||
| 1 | Assembly | A-1d | Theaters and other buildings for the performing arts and motion pictures | 1 per 125 | 1 per 65 | 1 per 200 | -- | |
| A-2d | Nightclubs, bars, taverns, dance halls and buildings for similar purposes | 1 per 40 | 1 per 40 | 1 per 75 | -- | |||
| Restaurants, banquet halls and food courts | 1 per 75 | 1 per 75 | 1 per 200 | -- | ||||
| A-3d | Auditoriums without permanent seating, art galleries, exhibition halls, museums, lecture halls, libraries, arcades and gymnasiums | 1 per 125 | 1 per 65 | 1 per 200 | -- | |||
| Passenger terminals and transportation facilities | 1 per 500 | 1 per 500 | 1 per 750 | -- | ||||
| Places of worship and other religious services | 1 per 150 | 1 per 75 | 1 per 200 | -- | ||||
| A-4 | Coliseums, arenas, skating rinks, pools, and tennis courts for indoor sporting events and activities | 1 per 75 for first 1,500 and 1 per 120 for remainder exceeding 1,500 | 1 per 40 for first 1,520 and 1 per 60 for remainder exceeding 1,520 | 1 per 200 | 1 per 150 | -- | ||
| A-5 | Stadiums amusement parks, bleachers and grandstands for outdoor sporting events and activities | 1 per 75 for first 1,500 and 1 per 120 for remainder exceeding 1,500 | 1 per 40 for first 1,520 and 1 per 60 for remainder exceeding 1,520 | 1 per 200 | 1 per 150 | -- | ||
| 2 | Business | B | Buildings for the transaction of business, professional services, other services involving merchandise, office buildings, banks, light industrial and similar uses | 1 per 25 for first 50 and 1 per 50 for the remainder exceeding 50 | 1 per 40 for first 80 and 1 per 80 for remainder exceeding 80 | -- | ||
| 3 | Educational | E | Educational facilities | 1 per 50 | 1 per 30 | 1 per 100 | 1 per 60 | -- |
| 4 | Factory and industrial | F-1 and F-2 | Structures in which occupants are engaged in work fabricating, assembly or processing of products or materials | 1 per 100 | 1 per 100 | Check State (UPC) | ||
| 5 | Institutional | I-1 | Residential care | 1 per 10 | 1 per 10 | 1 per 8 | ||
| I-2 | Hospitals, ambulatory nursing home care recipientb | 1 per roomc | 1 per roomc | 1 per 15 | ||||
| Employees, other than residential careb | 1 per 25 | 1 per 35 | -- | |||||
| Visitors other than residential care | 1 per 75 | 1 per 100 | -- | |||||
| I-3 | Prisonsb | 1 per cell | 1 per cell | 1 per 15 | ||||
| Reformatories, detention centers and correctional centersb | 1 per 15 | 1 per 15 | 1 per 15 | |||||
| Employeesb | 1 per 25 | 1 per 35 | -- | |||||
| I-4 | Adult day care and child day care | 1 per 15 | 1 per 15 | 1 | ||||
| 6 | Mercantile | M | Retail stores, service stations, shops, salesrooms, markets and shopping centers | 1 per 500 | 1 per 750 | -- | ||
| 7 | Residential | R-1 | Hotels, motels, boarding houses (transient) | 1 per sleeping unit | 1 per sleeping unit | 1 per sleeping unit | ||
| R-2 | Dormitories, fraternities, sororities and boarding houses (not transient) | 1 per 10 | 1 per 10 | 1 per 8 | ||||
| Apartment house | 1 per dwelling unit | 1 per dwelling unit | 1 per dwelling unit | |||||
| R-3 | One- and two-family dwellings | 1 per dwelling unit | 1 per 10 | 1 per dwelling unit | ||||
| Congregate living facilities with 16 or fewer persons | 1 per 10 | 1 per 10 | 1 per 8 | |||||
| R-4 | Congregate living facilities with 16 or fewer persons | 1 per 10 | 1 per 10 | 1 per 8 | ||||
| 8 | Storage | S-1 S-2 |
Structures for the storage of goods, warehouses, storehouses and freight depots, low and moderate hazard | 1 per 100 | 1 per 100 | Check State (UPC) | ||
| a. The fixtures shown are based on one fixture being the minimum required for the number of persons indicated or any fraction of the number of persons indicated. The number of occupants shall be determined by this code. | |
| b. Toilet facilities for employees shall be separate from facilities for inmates or care recipients. | |
| c. A single-occupant toilet room with one water closet and one lavatory serving not more than two adjacent patient sleeping units shall be permitted where such room is provided with direct access from each patient sleeping unit and with provisions for privacy. | |
| d. The occupant load for seasonal outdoor seating and entertainment areas shall be included when determining the minimum number of facilities required. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-2900, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-2900, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.020, 19.27.031, 19.27.074 and chapters 19.27 and 34.05 RCW. 05-01-014, § 51-50-2900, filed 12/2/04, effective 7/1/05. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-2900, filed 12/17/03, effective 7/1/04.]
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)) The
elevator car shall be of such a size and arrangement to
accommodate a 24-inch by 84-inch (610 mm by 2134 mm) ambulance
stretcher with not less than 5-inch (127 mm) radius corners,
in the horizontal, open position and shall be identified by
the international symbol for emergency medical services (star
of life). The symbol shall not be less than 3 inches (76 mm)
((high)) in height and shall be placed inside on both sides of
the hoistway door frame.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-3001, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.190, 19.27.020, and chapters 19.27 and 34.05 RCW. 08-01-110, § 51-50-3001, filed 12/18/07, effective 4/1/08. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-3001, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3001, filed 12/17/03, effective 7/1/04.]
((3108.1 General. Towers shall be designed and constructed in
accordance with the provisions of TIA-222. In Section
2.6.6.2, the extent of Topographic Category 2, escarpments,
shall extend 16 times the height of the escarpment. Towers
shall be designed for seismic loads. The exceptions to the
requirement of seismic design listed in Section 2.7.3 shall
not apply. Class I structures per Table 2-1 of the standard
may be exempted from seismic design, if approved by the
building official.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-3108, filed 1/20/10, effective 7/1/10.]
3401.5 Alternative compliance. Work performed in accordance
with the ((2009)) 2012 International Existing Building Code as
amended in WAC 51-50-480000 shall be deemed to comply with the
provisions of this chapter.
3401.6 Dangerous conditions. The building official shall have
the authority to require the elimination of conditions deemed
dangerous.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-3401, filed 1/20/10, effective 7/1/10.]
3411.7 Alterations affecting an area containing a primary
function. Where an alteration affects the accessibility to,
or contains an area of primary function, the route to the
primary function area shall be accessible. The accessible
route to the primary function area shall include toilet
facilities, telephones or drinking fountains serving the area
of primary function.
| EXCEPTIONS: | 1. The costs of providing the accessible route are not required to exceed 20 percent of the costs of the alteration affecting the area of primary function. |
| 2. This provision does not apply to alterations limited solely to windows, hardware, operating controls, electrical outlets and signs. | |
| 3. This provision does not apply to alterations limited solely to mechanical systems, electrical systems, installation or alteration of fire protection systems and abatement of hazardous materials. | |
| 4. This provision does not apply to alterations undertaken for the primary purpose of increasing the
accessibility of (( |
|
| 5. This provision does not apply to altered areas limited to Type B dwellings and sleeping units. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, amended and recodified as § 51-50-3411, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-3409, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-108, § 51-50-3409, filed 12/17/03, effective 7/1/04.]
Add new standards to Chapter 35:
ASTM
C150-12 Specification for Portland Cement.
C595-12 Specification for Blended Hydraulic Cement.
C1157-11 Standard Performance Specification for Hydraulic Cement.
NFPA
720-12 Standard for the Installation of Carbon Monoxide (CO)
Warning Equipment in Dwelling Units . . . . . . . . . . . . 908.7.1
[]
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480000, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480000, filed 12/19/06, effective 7/1/07.]
INTERNATIONAL EXISTING BUILDING CODE ((2009)) 2012 EDITION
AMENDATORY SECTION(Amending WSR 10-03-097, filed 1/20/10,
effective 7/1/10)
WAC 51-50-480101
Section 101 -- General.
101.4 Applicability. When requested by the permit applicant,
this code shall apply to the repair, alteration, change of
occupancy and relocation of buildings existing on the date of
adoption of this code, regardless of occupancy, subject to the
criteria of Sections 101.4.1 and 101.4.2. When compliance
with this code has not been requested, compliance with the
State Building Code as adopted in TITLE 51 WAC shall be
demonstrated.
101.4.1 Buildings not previously occupied. A building or
portion of a building that has not been previously occupied or
used for its intended purpose in accordance with the laws in
existence at the time of its completion shall comply with the
provisions of the State Building Code adopted in TITLE 51 WAC,
for new construction or with any current permit for such
occupancy.
101.4.2 Buildings previously occupied. The legal occupancy of
any building existing on the date of adoption of this code
shall be permitted to continue without change, except as is
specifically covered in this code, the International Fire
Code, or as deemed necessary by the code official to mitigate
an unsafe building. For the purpose of this section, "unsafe
building" is not to be construed as mere lack of compliance
with the current code.
((101.7)) 101.6 Appendices. The code official is authorized
to require rehabilitation and retrofit of buildings,
structures, or individual structural members in accordance
with the appendices of this code if such appendices have been
individually adopted. Appendix A, Guidelines for the Seismic
Retrofit of Existing Buildings, is hereby adopted as part of
this code without any specific adoption by the local
jurisdiction.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480101, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480101, filed 12/19/06, effective 7/1/07.]
((102.4.1)) 102.4.1.1 Fire prevention. The provisions of the
International Fire Code shall apply to matters affecting or
relating to structures, processes and premises regarding: The
hazard of fire and explosion arising from the storage,
handling or use of structures, materials or devices;
conditions hazardous to life, property or public welfare in
the occupancy of structures or premises; and the construction,
extension, repair, alteration or removal of fire suppression
and alarm systems or fire hazards in the structure or on the
premises from occupancy or operation except as specifically
provided for in this Code.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480102, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480102, filed 12/19/06, effective 7/1/07.]
(([B] 307.1 Conformance. No change shall be made in the use
or occupancy of any building that would place the building in
a different division of the same group of occupancy or in a
different group of occupancies, unless such building is made
to comply with the requirements of the International Building
Code for such division or group of occupancy. Subject to the
approval of the building official, the use or occupancy of
existing buildings shall be permitted to be changed and the
building is allowed to be occupied for purposes in other
groups without conforming to all the requirements of the
International Building Code for those groups, provided the new
or proposed use is less hazardous, based on life and fire
risk, than the existing use. The hazard tables of Chapter 9
may be used to demonstrate the relative fire and life risk of
the existing and the new proposed uses.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480307, filed 1/20/10, effective 7/1/10.]
((405.1 Scope. Level 3 alterations apply where the work area
exceeds 50% of the floor area of the building.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480405, filed 12/19/06, effective 7/1/07.]
407.1 Conformance. No change shall be made in the use or
occupancy of any building that would place the building in a
different division of the same group of occupancy or in a
different group of occupancies, unless such building is made
to comply with the requirements of the International Building
Code for such division or group of 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 10
may be used to demonstrate the relative fire and life risk of
the existing and the new proposed uses.
[]
505.1 Scope. Level 3 alterations apply where the work area
exceeds 50% of the floor area of the building.
[]
((607.1 Minimum requirements. Level 1 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480607, filed 1/20/10, effective 7/1/10.]
((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.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480704, filed 12/19/06, effective 7/1/07.]
707.1 Minimum requirements. Level 1 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).
[]
((711.1 Minimum requirements. Level 2 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480711, filed 1/20/10, effective 7/1/10.]
804.1 Scope. The requirements of this section shall be
limited to work areas in which Level 2 alterations are being
performed, and where specified they shall apply throughout the
floor on which the work areas are located or otherwise beyond
the work area.
| EXCEPTION: | For Level 2 alteration projects in which the fire protection requirements constitute an excessive burden, the fire protection requirements may be modified or waived by the fire code official. |
[]
((807.4.1 Evaluation and analysis. An engineering evaluation
and analysis that establishes the structural adequacy of the
altered structure shall be prepared by a registered design
professional and submitted to the code official. For
structures assigned to Seismic Design Category D, the
registered design professional shall submit to the code
official a seismic evaluation report of the existing building
based on one of the procedures specified in Section 101.5.4.2.
This seismic evaluation report shall not be required for
buildings in compliance with the benchmark building provisions
of ASCE 31, Section 3.2.
807.4.2 Substantial structural alteration. Any building or
structure undergoing substantial improvement shall have an
evaluation and analysis to demonstrate that the altered
building or structure complies with the International Building
Code for wind loading and with reduced International Building
Code level seismic forces as specified in Section 101.5.4.2
for seismic loading. For seismic considerations, the analysis
shall be based on one of the procedures specified in Section
101.5.4.
807.4.3 Limited structural alteration. Where any building or
structure undergoes less than substantial improvement, the
evaluation and analysis shall demonstrate that the altered
building or structure complies with the loads applicable at
the time the building was constructed.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480807, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480807, filed 12/19/06, effective 7/1/07.]
((808.1 Minimum requirements. Level 3 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-480808, filed 1/20/10, effective 7/1/10.]
811.1 Minimum requirements. Level 2 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).
[]
907.4.1 Evaluation and analysis. An engineering evaluation
and analysis that establishes the structural adequacy of the
altered structure shall be prepared by a registered design
professional and submitted to the code official. For
structures assigned to Seismic Design Category D, the
registered design professional shall submit to the code
official a seismic evaluation report of the existing building
based on one of the procedures specified in Section 301.1.4.2.
This seismic evaluation report shall not be required for
buildings in compliance with the benchmark building provisions
of ASCE 31, Section 3.2.
[]
908.1 Minimum requirements. Level 3 alterations to existing
buildings or structures shall comply with the Washington State
Energy Code (chapter 51-11 WAC).
[]
((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 912.1.1.1 and 912.1.1.2. All
existing buildings with a change of occupancy classification
shall comply with the seismic provisions of Section 907.3.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-480912, filed 12/19/06, effective 7/1/07.]
1012.1.1 Compliance with Chapter 9. The requirements of
Chapter 9 shall be applicable throughout the building for the
new occupancy classification based on the separation
conditions set forth in Sections 1012.1.1.1 and 1012.1.1.2.
All existing buildings with a change of occupancy
classification shall comply with the seismic provisions of
Section 1007.3.
[]
((1101.1 Scope. It is the intent of this chapter to provide
means for the preservation of historic buildings as defined in
Chapter 2. It is the purpose of this chapter to encourage
cost-effective preservation of original or restored
architectural elements and features and to provide a historic
building that will result in a reasonable degree of safety,
based on accepted life and fire safety practices, compared to
the existing building. Historical buildings shall comply with
the provisions of this chapter relating to their repair,
alteration, relocation and change of occupancy.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-481101, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481101, filed 12/19/06, effective 7/1/07.]
((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.)) Reserved.
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481103, filed 12/19/06, effective 7/1/07.]
((1104.1 Accessibility requirements. The provisions of
Sections 605 and 706 shall apply to buildings and facilities
designated as historic structures that undergo alterations,
unless technically infeasible. Where compliance with the
requirements for accessible routes, ramps, entrances, or
toilet facilities would threaten or destroy the historic
significance of the building or facility, as determined by the
professional responsible for the historical documentation of
the project, the alternative requirements of Sections 1104.1.1
through 1104.1.4 for that element shall be permitted.))
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-481104, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481104, filed 12/19/06, effective 7/1/07.]
((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.))
[Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481105, filed 12/19/06, effective 7/1/07.]
((1201.1 Conformance. Buildings or structures moved into or
within the jurisdiction shall comply with the provisions of
this code, the International Residential Code (chapter 51-51 WAC), the International Mechanical Code (chapter 51-52 WAC),
the International Fire Code (chapter 51-54 WAC), the Uniform
Plumbing Code and Standards (chapters 51-56 and 51-57 WAC),
the Washington State Energy Code (chapter 51-11 WAC) and the
Washington State Ventilation and Indoor Air Quality Code
(chapter 51-13 WAC) for new buildings or structures.
1201.1 Scope. It is the intent of this chapter to provide
means for the preservation of historic buildings as defined in
Chapter 2. It is the purpose of this chapter to encourage
cost-effective preservation of original or restored
architectural elements and features and to provide a historic
building that will result in a reasonable degree of safety,
based on accepted life and fire safety practices, compared to
the existing building. Historical buildings shall comply with
the provisions of this chapter relating to their repair,
alteration, relocation and change of occupancy.
SECTION 1202--((REQUIREMENTS. This section not adopted.)) Reserved.
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-481201, filed 1/20/10, effective 7/1/10.]
1203.9 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.
[]
1204.1 Accessibility requirements. The provisions of Sections
705, 806, and 906, as applicable, shall apply to facilities
designated as historic structures that undergo alterations,
unless technically infeasible. Where compliance with the
requirements for accessible routes, entrances, or toilet rooms
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 1204.1.1 through
1204.1.4 for that element shall be permitted.
| EXCEPTION: | Type B dwelling or sleeping units required by Section 1107 of the International Building Code are not required to be provided in historical buildings. |
[]
1205.10 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.
1205.14 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 1011.1 will lead to loss of historic
character or historic materials in the building, the existing
level of natural lighting shall be considered acceptable.
[]
1301.1 Conformance. Buildings or structures moved into or
within the jurisdiction shall comply with the provisions of
this code, the International Residential Code (chapter 51-51 WAC), the International Mechanical Code (chapter 51-52 WAC),
the International Fire Code (chapter 51-54 WAC), the Uniform
Plumbing Code and Standards (chapters 51-56 and 51-57 WAC),
the Washington State Energy Code (chapter 51-11 WAC) and the
Washington State Ventilation and Indoor Air Quality Code
(chapter 51-13 WAC) for new buildings or structures.
| EXCEPTION: | Group R-3 buildings or structures are not required to comply if: |
| 1. The original occupancy classification is not changed; and | |
| 2. The original building is not substantially remodeled or rehabilitated. |
[Statutory Authority: RCW 19.27.031 and 19.27.074. 10-03-097, § 51-50-481301, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 70.92, 19.27, and 34.05 RCW. 07-01-091, § 51-50-481301, filed 12/19/06, effective 7/1/07.]
This section is not adopted.
[]
The following section of the Washington Administrative Code is repealed:
| WAC 51-50-31200 | Section 31-2 -- Standard test method for particulate emissions from fireplaces. |