A. Exceptions. 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.

B. The City of Bellevue Fire Department Smoke Control Guidelines shall be adopted for administering the smoke control provisions of the International Building Code and International Fire Code.

C. Amend IBC Section 202, Definitions, to read as follows:

[F] HIGH-RISE BUILDING. A building with an occupied floor or occupied roof located more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access.

[F] STANDBY POWER SYSTEM. All references to Standby Power Systems shall be considered to indicate Legally Required Power Systems in accordance with NFPA 70 (National Electrical Code) or other electrical codes adopted by the State of Washington and shall be in accordance with Chapter 27 Legally Required Standby Power, as a source of automatic electric power of a required capacity and duration to operate required building, hazardous materials or ventilation systems in the event of a failure of the primary power. Legally Required Standby Power Systems are required for electrical loads where interruption of the primary power could create hazards or hamper rescue or fire-fighting operations.

[F] WATER SUPPLY. The source and delivery system supplying the required flow (gpm) and pressure (psi) to a sprinkler system or other fire protection system/equipment.

D. Amend IBC Section 403.2.1.1, Type of construction, to read as follows:

403.2.1.1. Type of construction.

The following reductions in the minimum fire-resistance rating of the building elements in Table 601 shall be permitted as follows:

1. For buildings not greater than 420 feet (128 m) in building height, the fire-resistance rating of the building elements in Type IA construction shall be permitted to be reduced to the minimum fire-resistance ratings for the building elements in Type IB.

Exception: The required fire-resistance rating of the structural frame and bearing walls shall not be reduced.

2. In other than Group F-1, H-2, H-3, H-5, M and S-1 occupancies, the fire-resistance rating of the building elements in Type IB construction shall be permitted to be reduced to the fire-resistance ratings in Type IIA.

3. The building height and building area limitation of a building containing building elements with reduced fire-resistance ratings shall be permitted to be the same as the building without such reductions.

E. Amend IBC Section 403.3, Automatic sprinkler system, to read as follows:

[F] 403.3 Automatic sprinkler system. Buildings and structures shall be equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 and a secondary water supply where required by Section 403.3.3.

[F] 403.3.1 Number of sprinkler risers and system design. Each sprinkler system zone in buildings that are more than 420 feet (128 m) in building height shall be supplied by not fewer than two risers. Each riser shall supply sprinklers on alternate floors. If more than two risers are provided for a zone, sprinklers on adjacent floors shall not be supplied from the same riser.

[F] 403.3.1.1 Riser location. Sprinkler risers shall be placed in interior exit stairways and ramps that are remotely located in accordance with Section 1007.1.

[F] 403.3.2 Water supply to required fire pumps. In all buildings that are more than 420 feet in building height, and buildings of Type IV-A and IV-B construction that are more than 120 feet (37 m) in building height, required fire pumps shall be supplied by connections to no fewer than two water mains located in different streets and shall not serve other buildings. Separate supply piping shall be provided between each connection to the water main and the pumps. Each connection and the supply piping between the connection and the pumps shall be sized to supply the flow and pressure required for the pumps to operate.

Exception: When approved by the fire code official, two connections to the same main shall be permitted provided the main is valved such that an interruption can be isolated so that the water supply will continue without interruption through no fewer than one of the connections.

[F] 403.3.3 Secondary water source. An automatic secondary on-site water source shall be provided for high-rise building as follows:

1. High-rise buildings containing R or B occupancies only shall be provided with a net usable volume of 15,000 gallons.

2. High-rise buildings containing an S-2 occupancy shall be provided with a net usable volume of 40,000 gallons.

3. High-rise buildings containing an M occupancy shall be provided with a net usable volume of 50,000 gallons.

4. Multi high-rise complexes that are less than 420 feet in height may share a common secondary water source by combining the highest demand of item 2 or 3 above, with number 1 above. Only one parking/retail area and two high-rise buildings may share a common secondary water source.

An acceptable alternative to items 1 through 4 above is to prove a calculated net useable volume capable of meeting the hydraulically calculated sprinkler demand, including the total (combined inside and outside) hose stream requirement, as per NFPA 13. The duration of the calculated source shall have a duration of not less than 30 minutes for buildings with light hazard occupancies only and a 60-minute duration for buildings with ordinary hazard occupancies as defined by NFPA 13.

Exception: Existing buildings, including those undergoing substantial renovation.

[F] 403.3.4 Fire pump room. Fire pumps shall be located in rooms protected in accordance with Section 913.2.1.

[F] 403.3.5 High-rise building sprinkler system design. Combination standpipe/sprinkler risers using 6-inch pipe minimum, shall be used. Shut-off valves and water-flow devices shall be provided on each floor at the sprinkler system connection to each standpipe.

Two four-way fire department connections serving the combination system shall be provided on separate streets well separated from each other. At least one of the fire department connections shall be connected to the riser above a riser isolation valve. Dry pipe sprinkler systems serving parking garages may use one separate two-way fire department connection. The dry pipe sprinkler system shall be supplied by the on-site water tank.

F. Amend and rename IBC Section 403.4.8, Standby and emergency power, to read as follows:

403.4.8 Legally required standby and emergency power. A legally required standby power system complying with Section 2702 and Section 3003 shall be provided for the standby power loads specified in Table 2702, and an emergency power system complying with Section 2702 shall be provided for the emergency power loads specified in Table 2702.

403.4.8.1 Equipment room. If the legally required standby or emergency power system includes a generator set inside a building, the system shall be in accordance with Section 2702.1.8.

Exception: In Group I-2, Condition 2, manual start and transfer features for the critical branch of the emergency power are not required to be provided at the fire command center.

403.4.8.1.1 Penetrations. Penetrations into and openings through an equipment room containing a legally required standby or emergency generator set inside a building are prohibited except for required exit doors, equipment and ductwork necessary for heating, cooling or ventilation, sprinkler branch line piping, or electrical raceway serving the generator set equipment room or being served by the generator set. Such penetrations shall be protected in accordance with Section 714.

Exception: Metallic piping with no joints or openings where it passes through the generator set equipment room.

403.4.8.2 Fuel line piping protection. Fuel lines supplying a generator set inside a building shall be separated from areas of the building other than the room the generator is located in by one of the following methods:

1. A fire-resistant pipe-protection system that has been tested in accordance with UL 1489. The system shall be installed as tested and in accordance with the manufacturer’s installation instructions, and shall have a rating of not less than 2 hours. Where the building is protected throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1, the required rating shall be reduced to 1 hour.

2. An assembly that has a fire-resistance rating of not less than 2 hours. Where the building is protected throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2, the required fire-resistance rating shall be reduced to 1 hour.

3. Other approved methods.

[F] 403.4.8.3 Legally required standby power loads. Legally required standby power loads shall be classified in accordance with Section 2702 and Table 2702.

[F] 403.4.8.4 Emergency power loads. Emergency power loads shall be classified in accordance with Section 2702 and Table 2702.

G. Amend IBC Section 403.5, Means of egress and evacuation, to read as follows:

403.5 Means of egress and evacuation. The means of egress in high-rise buildings shall comply with Sections 403.5.1 through 403.5.5 and Section 907.5.2.2.6 which requires either Phased Evacuation, an additional stair, or occupant evacuation elevators, to facilitate simultaneous building evacuation and firefighter response into the building.

403.5.1 Remoteness of interior exit stairways. Required interior exit stairways shall be separated by a distance not less than 30 feet (9144 mm) or not less than one- fourth of the length of the maximum overall diagonal dimension of the building or area to be served, whichever is less. The distance shall be measured in a straight line between the nearest points of the enclosure surrounding the interior exit stairways. In buildings with three or more interior exit stairways, not fewer than two of the interior exit stairways shall comply with this section. Interlocking or scissor stairways shall be counted as one interior exit stairway.

403.5.2 Additional interior exit stairway. For buildings other than Group R-2 and their ancillary spaces that are more than 420 feet (128 m) in building height, one additional interior exit stairway meeting the requirements of Sections 1011 and 1023 shall be provided in addition to the minimum number of exits required by Section 1006.3. The total capacity of any combination of remaining interior exit stairways with one interior exit stairway removed shall be not less than the total capacity required by Section 1005.1. Scissor stairways shall not be considered the additional interior exit stairway required by this section.

Exceptions:

1) An additional interior exit stairway shall not be required to be installed in buildings having elevators used for occupant self-evacuation in accordance with Section 3008.

2) An additional interior exit stairway shall not be required for other portions of the building where the highest occupiable floor level in those areas is less than 420 feet (128 m) in building height.

403.5.3 Stairway door operation. Stairway doors other than the exit discharge doors shall be permitted to be locked from the stairway side. Stairway doors that are locked from the stairway side shall be capable of being unlocked simultaneously without unlatching upon a signal from the fire command center.

403.5.3.1 Stairway communication system. A telephone or other two-way communications system connected to an approved constantly attended station shall be provided at not less than every fifth floor in each stairway where the doors to the stairway are locked.

403.5.4 Smokeproof enclosures. Every required interior exit stairway serving floors more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access shall be a smokeproof enclosure in accordance with Sections 909.20 and 1023.12. Where interior exit stairways and ramps are pressurized in accordance with Section 909.20.5, the smoke control pressurization system shall comply with the requirements specified in Section 909.6.3.

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 1023.12 provided the portion of the stairway below is separated from the level of exit discharge with a 1-hour fire barrier.

403.5.5 Luminous egress path markings. Luminous egress path markings shall be provided in accordance with Section 1025.

H. Amend IBC Section 403 to add a new subsection 403.6.1.1, Machine rooms, to read as follows:

403.6.1 Fire service access elevator. In buildings with an occupied floor more than 120 feet (36 576 mm) above the lowest level of fire department vehicle access, not fewer than two fire service access elevators, or all elevators, whichever is less, shall be provided in accordance with Section 3007. Each fire service access elevator shall have a capacity of not less than 3,500 pounds (1588 kg) and shall comply with Section 3002.4.

403.6.1.1 Machine rooms. Each fire service access elevator shall be served by a different machine room or control room.

I. Amend IBC Section 403 to add a new subsection 403.7, Smoke control, to read as follows:

403.7 Smoke control. A smoke-control system meeting the requirements of Section 909 shall be provided in all areas containing a Group I or Group R occupancy within high-rise buildings. Such areas shall be separated in accordance with Section 709 and Section 909 to create separate smoke zones, or smoke control shall be provided in all such unseparated areas of the building.

J. Amend and rename IBC Section 404.7, Standby power, to read as follows:

[F] 404.7 Emergency power. Equipment required to provide smoke control shall be provided with emergency power in accordance with Section 909.11, Section 2702, and Table 2702.

K. Amend IBC Section 405.1, General, to read as follows:

405.1 General. The provisions of Sections 405.2 through 405.9 apply to building spaces having a floor level used for human occupancy more than 30 feet (9144 mm) below the finished floor of the lowest level of exit discharge.

Exceptions: The provisions of Section 405 are not applicable to the following buildings or portions of buildings:

1. One- and two-family dwellings, sprinklered in accordance with Section 903.3.1.3.

2. Parking garages provided with automatic sprinkler systems in compliance with Section 405.3 and pressurized stair enclosures provided with emergency power in compliance with Sections 909.20, 909.20.5, and 909.20.6 need not comply with Sections 405.2 through 405.9 but must comply with Section 405.4.3.1.

3. Fixed guideway transit systems.

4. Grandstands, bleachers, stadiums, arenas, and similar facilities.

5. Where the lowest story is the only story that would qualify the building as an underground building and has an area not greater than 1,500 square feet (139 m²) and has an occupant load less than 10.

6. Pumping stations and other similar mechanical spaces intended only for limited periodic use by service or maintenance personnel.

L. Amend IBC Section 405.4.3 to add a new subsection 405.4.3.1, Fire service access elevator, to read as follows:

[F] 405.4.3 Elevators. Where elevators are provided, each compartment shall have direct access to an elevator. Where an elevator serves more than one compartment, an enclosed elevator lobby shall be provided and shall be separated from each compartment by a smoke barrier in accordance with Section 709. Doorways in the smoke barrier shall be protected by fire door assemblies that comply with Section 716, shall comply with the smoke and draft control assembly requirements of Section 716.2.2.1 with the UL 1784 test conducted without an artificial bottom seal, and shall be automatic-closing by smoke detection in accordance with Section 716.2.6.6.

[F] 405.4.3.1 Fire service access elevator. In buildings with an occupied floor more than 80 feet below the level of exit discharge, not fewer than two fire service access elevators, or all elevators, whichever is less, shall be provided in accordance with Section 3007. Each fire service access elevator shall have a capacity of not less than 3,500 pounds and shall comply with Section 3002.4.

M. Amend and rename IBC Section 405.8, Standby and emergency power, to read as follows:

[F] 405.8 Legally required standby and emergency power. A legally required standby power system complying with Section 2702 shall be provided for the legally required standby power loads specified in Table 2702. An emergency power system complying with Section 2702 shall be provided for the emergency power loads specified in Table 2702.

N. Amend IBC Section 503.1.4.1, Enclosure of occupied roof areas, to read as follows:

503.1.4.1 Enclosure of occupied roof areas. Elements or structures enclosing the occupied roof areas shall not extend more than 48 inches (1220 mm) above the surface of the occupied roof.

Exceptions:

Penthouses constructed in accordance with Section 1511.2 and towers, domes, spires and cupolas constructed in accordance with Section 1511.5.

O. Amend IBC Section 504.4.1, Stair enclosure pressurization increase, to read as follows:

504.4.1 Stair enclosure pressurization increase. For Group R-1, R-2, and I-1 Condition 2 assisted living facilities licensed under Chapter 388-78A WAC and residential treatment facilities as licensed by Washington State under Chapter 246-337 WAC located 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 504.4 may be increased by one provided the interior exit stairways and ramps are pressurized in accordance with Sections 909.6.3 and 909.20. Legally required standby power shall be provided in accordance with Sections 909.11 and 2702.2.16 for buildings constructed in compliance with this section and shall be connected to stairway shaft pressurization equipment, elevators and lifts used for accessible means of egress (if provided), elevator hoistway pressurization equipment (if provided) and other life safety equipment as determined by the authority having jurisdiction. For the purposes of this section, legally required standby power shall comply with the 2020 National Electrical Code (NFPA 70) Section 701.12, options (C) Storage Battery, (D) Generator Set, (E) Uninterruptible Power Supplies, or (H) Fuel Cell System or subsequent revised section number(s).

Add IBC Section 706.1 General to read as follows:

Section 706.1 General. Fire walls shall be constructed in accordance with Sections 706.2 through 706.11. The extent and location of such fire walls shall provide a complete separation. Where a fire wall separates occupancies that are required to be separated by a fire barrier wall, the most restrictive requirements of each separation shall apply.

Point of Information When fire walls are provided, automatic sprinkler and fire alarm systems must be zoned to conincide with fire walls. Reference Sections 903.3.9 and 907.6.4.

P. Amend IBC Section 903.3.1, Standards, to read as follows:

[F] 903.3.1 Standards. Sprinkler systems shall be designed and installed in accordance with Section 903.3.1.1, 903.3.1.2 or 903.3.1.3 and other chapters of this code, as applicable. In addition, sprinkler systems shall be designed with a buffer to account for water system fluctuations to include a low reservoir condition. Such buffer shall be 5% for static pressures less than 50 psi and 10% for static pressures above 50 psi.

Exception: Buffers are not required for systems designed in accordance with Section 903.3.1.3 (NFPA 13 D)

Permit applicants shall independently verify site specific static pressure:

• Prior to initiating the sprinkler system.

• Prior to installing any sprinkler piping, including the underground supply.

• Prior to requesting any cover inspections.

Q. Amend IBC Section 903.3.1.1, NFPA 13 sprinkler systems, to read as follows:

[F] 903.3.1.1 NFPA 13 sprinkler systems. Where the provisions of this code require that a building or portion thereof be equipped throughout with an automatic sprinkler system in accordance with this section, sprinklers shall be installed throughout in accordance with NFPA 13 except as provided in Section 903.3.1.1.1, 903.3.1.1.2, and 903.3.1.1.3.

[F] 903.3.1.1.1 Exempt locations. Automatic sprinklers shall not be required in the following rooms or areas where such rooms or areas are protected with an approved automatic fire detection system in accordance with Section 907.2 that will respond to visible or invisible particles of combustion. Sprinklers shall not be omitted from any room merely because it is damp, of fire-resistance rated construction or contains electrical equipment.

1. Any room where the application of water, or flame and water, constitutes a serious life or fire hazard.

2. A room or space where sprinklers are considered undesirable because of the nature of the contents, where approved by the fire code official.

3. Rooms or areas that are of noncombustible construction with wholly noncombustible contents.

4. Fire service access elevator machine rooms and machinery spaces.

5. Machine rooms, machinery spaces, control rooms and control spaces associated with occupant evacuation elevators designed in accordance with Section 3008.

6. Elevator machine rooms, elevator machinery spaces, control spaces, or hoistways of traction elevators that comply with NFPA 13 Section 8.15.5.3.

[F] 903.3.1.1.2 Bathrooms. In Group R occupancies sprinklers shall not be required in bathrooms that do not exceed 55 square feet (5 m2) in area and are located within individual dwelling units or sleeping units, provided that walls and ceilings, including the walls and ceilings behind a shower enclosure or tub, are of noncombustible or limited-combustible materials with a 15-minute thermal barrier rating.

R. Amend IBC Section 903.3.1.1 to add a new subsection 903.3.1.1.3, Seismic coefficient, to read as follows:

903.3.1.1.3 Seismic Coefficient. The coefficient Cp for seismic bracing design calculations in accordance with NFPA 13 shall either use a value of 0.70 or shall use a value based on site specific USGS data.

S. Amend IBC Section 903.3.1.2, NFPA 13R sprinkler systems, to read as follows:

[F] 903.3.1.2 NFPA 13R sprinkler systems. Automatic sprinkler systems in Group R occupancies up to and including four stories in height shall be permitted to be installed throughout in accordance with NFPA 13R.

A building designed in accordance with WAC 51-50-0504, 0510 or Section 510.4 of the International Building Code shall be sprinklered throughout in accordance with NFPA 13.

T. Amend IBC Section 903.3 to add a new subsection 903.3.9, Fire sprinkler zones, to read as follows:

903.3.9 Fire sprinkler zones. When fire walls and/or horizontal exits are provided the sprinkler system shall be zoned to coincide with the fire walls and/or horizontal exits.

Exception: Sprinkler zoning is not required in existing construction if fire alarm initiating devices provide the same level of occupant notification that a zoned sprinkler system would provide.

U. Amend IBC Section 903.4.2, Alarms, to read as follows:

[F] 903.4.2 Alarms. Approved fire alarm system with audible and visible alarm notification appliances shall be provided for every automatic sprinkler system in accordance with Section 907 and throughout areas designated by the fire code official. Sprinkler water-flow alarm devices shall be activated by water flow equivalent to the flow of a single sprinkler of the smallest orifice size installed in the system. Alarm devices shall be provided on the exterior of the building in an approved location. Where a fire alarm system is installed, actuation of the automatic sprinkler system shall actuate the building fire alarm.

V. Amend IBC Section 903.4.3, Floor control valves, to read as follows:

[F] 903.4.3 Floor control valves. Approved supervised indicating control valves shall be provided at the point of connection to the riser on each floor.

The floor control valves shall be located within interior exit stairways and within 6 feet of floors or landings unless chains or other approved devices are readily available.

Exception: In buildings without interior exit stairways, the location of the floor control valves shall be determined by the fire code official.

W. Amend IBC Section 903.5, Testing and maintenance, to read as follows:

[F] 903.5 Testing and maintenance. Sprinkler systems shall be tested and maintained in accordance with Section 903.5.1.

[F] 903.5.1 Fire sprinkler and standpipe main/express drains. Fire sprinkler and standpipe main/express drains shall be positioned to drain to the sanitary sewer. Additionally, maintenance or testing discharges from fire pumps shall be treated in order to comply with the National Pollution Discharge Elimination System (NPDES) requirements.

Point of Information Water drained or otherwise discharged from a fire sprinkler system, standpipe or fire pump in the course of testing and maintenance is considered an “illicit discharge” and must drain to the sanitary sewer or be treated in order to discharge to storm drains, ditches, or water bodies.

X. Amend IBC Section 905.3, Required installations, to read as follows:

[F] 905.3 Required installations. Standpipe systems shall be installed where required by Sections 905.3.1 through 905.3.10. Standpipe systems are allowed to be combined with automatic sprinkler systems.

Exception: Standpipe systems are not required in Group R-3 occupancies.

Y. Amend IBC Section 905.3.1, Height, to read as follows:

[F] 905.3.1 Height. Class I standpipe systems shall be installed throughout buildings where any of the following conditions exist:

1. Four or more stories are above or below grade plane.

2. The floor level of the highest story is located more than 30 feet (9144 mm) above the lowest level of fire department access.

3. The floor level of the lowest story is located more than 30 feet (9144 mm) below the highest level of fire department vehicle access.

Exception:

In determining the lowest level of fire department vehicle access, it shall not be required to consider either of the following:

1. Recessed loading docks for four vehicles or less.

2. Conditions where topography makes access from the fire department vehicle to the building impractical or impossible.

Z. Amend IBC Section 905.3 to add Section 905.3.9, High-rise building standpipes, to read as follows:

[F] 905.3.9 High-rise building standpipes. Standpipe risers shall be combination standpipe/sprinkler risers using a minimum pipe size of 6 inch. One 2-1/2 inch hose connection shall be provided on every intermediate floor level landing in every required stairway and elsewhere as required by NFPA 14. Where, and only where, static or residual water pressures at any hose outlet exceeds 175 psi (1207 kPa), approved pressure-regulating devices shall be installed to limit the pressure to a range between 125 and 175 psi at not less than 300 gpm. The pressure on the inlet side of the pressure-regulating device shall not exceed the rated working pressure of the device. An additional non-regulated hose connection located directly below the PRV or an equally sized bypass around the pressure regulating device with a normally closed control valve shall be provided at each reduced pressure connection.

Each non-regulated hose connection shall be labeled “High Pressure – No PRV”. The sign shall have 1/2-inch white letters on a red background.

Point of Information Additional flow and pressure requirements are contained in NFPA 14. Designers should be cognizant of space considerations within stair shafts and additional signage needed for the PRV bypass control valves.

AA. Amend IBC Section 905.3 to add Section 905.3.10, Vertical standpipes served by fire pumps in high-rise buildings, to read as follows:

[F] 905.3.10 Vertical standpipes served by fire pumps in high-rise buildings. Where vertical standpipes are served by fire pumps a check valve shall be installed at the base of vertical standpipe.

AB. Amend IBC Section 905.4, Location of Class I standpipe hose connections, to read as follows:

[F] 905.4 Location of Class I standpipe hose connections. Class I standpipe hose connections shall be provided in all of the following locations:

1. In every required interior exit stairway, a hose connection shall be provided for each story above and below grade plane. Hose connections shall be located at an intermediate landing between stories, unless otherwise approved by the fire code official. Where stairs are required to provide roof access, the standpipe roof connections shall be located adjacent to the stair opening on the roof.

Exception: A single hose connection shall be permitted to be installed in the open corridor or open breezeway between open stairs that are not greater than 75 feet (22 860 mm) apart.

2. On each side of the wall adjacent to the exit opening of a horizontal exit.

Exceptions:

1. Where floor areas adjacent to a horizontal exit are reachable from an interior exit stairway hose connection by a 30-foot (9144 mm) hose stream from a nozzle attached to 100 feet (30 480 mm) of hose, a hose connection shall not be required at the horizontal exit.

2. When the fire code official determines that a standpipe connection is not needed.

3. In every exit passageway, at the entrance from the exit passageway to other areas of a building.

Exception: Where floor areas adjacent to an exit passageway are reachable from an interior exit stairway hose connection by a 30-foot (9144 mm) hose stream from a nozzle attached to 100 feet (30 480 mm) of hose, a hose connection shall not be required at the entrance from the exit passageway to other areas of the building.

4. In covered and open mall buildings, adjacent to each exterior public entrance to the mall, adjacent to each entrance from an exit passageway or exit corridor to the mall, at each intermediate landing within required enclosed stairways, and at other locations as necessary so that the distance to reach all portions of a tenant space does not exceed 200 feet (60 960 mm) from a hose connection.

5. Where the roof has a slope less than four units vertical in 12 units horizontal (33.3- percent slope), at least one standpipe shall be provided with a 2-1/2 inch hose connection located on the roof. Additional hose connections shall be provided so that all portions of the roof are within 200 feet of hose travel distance from a standpipe hose connection. The hose connection(s) shall be at least 10 feet (3048 mm) from the roof edge, skylight, light well or other similar openings, unless protected by a 42-inch- high (1,067 mm) guardrail or equivalent. All roof hose connections shall be arranged to be operable without entering the building. Roof connections in high-rise buildings are allowed to be located at the highest landing of a stairway with stair access to the roof. An additional hose connection shall be provided at the top of the most hydraulically remote standpipe for testing purposes.

6. Where the most remote portion of a nonsprinklered floor or story is more than 150 feet (45 720 mm) from a hose connection or the most remote portion of a sprinklered floor or story is more than 200 feet (60 960 mm) from a hose connection, additional hose connections shall be provided in interior exit stairways or protected locations that are accessed through protected enclosures. The protected enclosure shall be a corridor constructed as a smoke barrier from the exit enclosure to the standpipe connection.

Exception: Hose connections in parking garages must be located in vertical exit enclosures, protected locations, immediately adjacent to exterior exit doors, loading docks or other areas as approved by the fire code official. Subject to the approval of the fire code official, the travel distance may also be increased to a maximum distance of 240 feet.

AC. Amend IBC Section 905.8, Dry standpipes, to read as follows:

[F] 905.8 Dry standpipes. Dry standpipes shall not be installed.

Exception: Where subject to freezing and in accordance with NFPA 14 when approved by the fire code official.

AD. Amend IBC Section 906.1, Where required, to read as follows:

[F] 906.1 Where required. Portable fire extinguishers shall be installed in all of the following locations:

1. In new and existing Group A, B, E, F, H, I, M, R-1, R-2, R-4 and S occupancies.

Exceptions:

1. In Group R-2 occupancies, portable fire extinguishers shall only be required to be within common areas and corridors and not within each dwelling unit.

2. In Group E occupancies, portable fire extinguishers shall be required only in locations specified in Items 2 through 6 where each classroom is provided with a portable fire extinguisher having a minimum rating of 2-A:20-B:C.

3. In storage areas of Group S Occupancies where forklift, powered industrial truck or powered cart operators are the primary occupants, fixed extinguishers, as specified in NFPA 10, shall not be required where in accordance with all of the following:

3.1 Use of vehicle-mounted extinguishers shall be approved by the fire code official.

3.2. Each vehicle shall be equipped with a 10-pound, 40A:80B:C extinguisher affixed to the vehicle using a mounting bracket approved by the extinguisher manufacturer or the fire code official for vehicular use.

3.3 Not less than two spare extinguishers of equal or greater rating shall be available on site to replace a discharged extinguisher.

3.4 Vehicle operators shall be trained in the proper operation, use and inspection of extinguishers.

3.5 Inspections of vehicle-mounted extinguishers shall be performed daily.

2. Within 30 feet (9144 mm) distance of travel from commercial cooking equipment and from domestic cooking equipment in Group I-1; I-2, Condition 1; and R-2 college dormitory occupancies.

3. In areas where flammable or combustible liquids are stored, used or dispensed.

4. On each floor of structures under construction, except Group R-3 occupancies, in accordance with Section 3315.1 of the International Fire Code.

5. Where required by the International Fire Code sections indicated in Table 906.1.

6. Special-hazard areas, including but not limited to laboratories, computer rooms and generator rooms, where required by the fire code official.

Exception: Portable fire extinguishers are not required at normally unmanned Group U occupancy buildings or structures where a portable fire extinguisher suitable to the hazard of the location is provided on the vehicle of visiting personnel.

AE. Amend IBC Section 907.1, General, to read as follows:

[F] 907.1 General. This section covers the application, installation, performance and maintenance of fire alarm systems and their components in new and existing buildings and structures in accordance with the items listed below.

1. The requirements of Section 907.2 are applicable to new buildings and structures, new fire alarm systems, and replacement of existing fire alarm control panels being installed in existing structures.

2. When an existing fire alarm unit is replaced in existing structures, the entire fire alarm system shall comply with the requirements of Section 907.2.

Point of Information See Public Information Sheet F-75 “Fire Alarm Panel Replacement” for additional information.

Fire alarm system upgrades shall not require upgrades to other building systems, unless necessary to meet the requirements of Section 907.2. Pursuant to Section 104.8 and subject to the approval of the fire code official, fire alarm system upgrades may be phased in over a time period not to exceed 5 years. Approval of a phased alarm system upgrade must be documented in an executed agreement between the applicant and the City of Bellevue, and shall contain measurable milestones, insurance requirements, and indemnity provisions.

3. The requirements of International Fire Code Section 907.9 are applicable to existing buildings and structures in addition to the condition described in item 2.

4. For the purpose of this section, fire barriers shall not be considered to create a separate building.

5. Buildings required by this section to be provided with a fire alarm system shall be provided with a single fire alarm system unless otherwise approved by the fire code official.

AF. Amend IBC Section 907.1.2, Fire alarm shop drawings, to read as follows:

[F] 23.10.907.1.2 Fire alarm shop drawings. Shop drawings for fire alarm systems shall be prepared in accordance with NFPA 72 and submitted for review and approval prior to system installation. In addition, the submittal documents shall include a narrative and input/output matrix that supports the approved exiting plan for the building.

Delete IBC Section 907.2.7.1 Occupant notification.

Amend IBC Section 907.2.13.1.1, Area smoke detection, to read as follows:

[F] 907.2.13.1.1 Area smoke detection. Area smoke detectors shall be provided in accordance with this section. Smoke detectors shall be connected to an automatic fire alarm system. The activation of any detector required by this section, other than duct smoke detectors, shall activate the emergency voice/alarm communication system in accordance with Section 907.5.2.2. In addition to smoke detectors required by Sections 907.2.1 through 907.2.9, smoke detectors shall be located as follows:

1. In each mechanical equipment, electrical, transformer, telephone equipment or similar room that is not provided with sprinkler protection.

2. In each elevator machine room, machinery space, control room and control space and in elevator lobbies.

3. Within 5 feet (1524 mm) of doors opening into stairways that are smokeproof enclosures or are pressurized stairways.

Where smoke detectors cannot be utilized due to ambient conditions, approved automatic heat detectors shall be installed in accordance with Section 907.4.3.

Delete IBC Section 907.2.13.2 Fire department communication system.

AG. Amend IBC Section 907.2.18.1, Smoke detectors, to read as follows:

[F] 907.2.18.1 Smoke detectors. Not fewer than one smoke detector listed for the intended purpose shall be installed in all of the following areas:

1. Electrical, non-utility-owned transformer vault rooms, telephone equipment, elevator machine, or similar rooms.

2. Elevator lobbies.

3. The main return and exhaust air plenum of each air-conditioning system serving more than one story and located in a serviceable area downstream of the last duct inlet.

4. Each connection to a vertical duct or riser serving two or more floors from return air ducts or plenums of heating, ventilating and air-conditioning systems, except that in Group R occupancies, a listed smoke detector is allowed to be used in each return air riser carrying not more than 5,000 cfm (2.4 m³/s) and serving not more than 10 air-inlet openings.

5. Within 5 feet of doors opening into stairways that are smokeproof enclosures, or that are pressurized stairways. Where smoke detectors cannot be utilized due to ambient conditions, approved automatic heat detectors shall be installed in accordance with Section 907.4.3.

AH. Amend IBC Section 907.5.2.1.1, Average sound pressure, to read as follows:

[F] 907.5.2.1.1 Average sound pressure. The audible alarm notification appliances shall provide a sound pressure level of 15 decibels (dBA) above the average ambient sound level or 5 dBA above the maximum sound level having a duration of not less than 60 seconds, whichever is greater, in every occupiable space within the building, or in the case of a partial alarm system, throughout the space that is provided with the fire alarm system. The minimum sound pressure levels shall be: 75 dBA in occupancies in Groups R and I-1; 90 dBA in mechanical equipment rooms; and 60 dBA in other occupancies. In occupancies with high sound levels, such as nightclubs, bars, theaters, auditoriums, sanctuaries, etc., an interface shall be provided between the fire alarm system and the noise source to eliminate the noise source upon activation of the fire alarm system.

Exception: Private mode signaling in accordance with NFPA 72 shall be allowed in areas of group I-2 and I-3 occupancies where occupants are not expected to self-evacuate.

AI. Amend and rename IBC Section 907.5.2.2.5, Standby power, to read as follows:

[F] 907.5.2.2.5 Legally required standby power. Emergency voice/alarm communications systems shall be provided with legally required standby power in accordance with Section 2702 and Table 2702.

AJ. Add IBC Section 907.5.2.2.6, Phased evacuation, to read as follows:

[F] 907.5.2.2.6 Phased evacuation. All buildings more than 10 stories above the lowest level of fire department access shall utilize an approved phased evacuation plan.

Exceptions:

1. When an additional exit stairway meeting the requirements of Sections 1011 and 1023 are provided in addition to the minimum number of exits required by Section 1006.

2. Where the width of each required exit stairway as specified in Section 1011.2 is increased by not less than 24 inches of additional width.

3. Where occupant self-evacuation elevators in accordance with IBC Section 3008 have been installed.

4. Where full tenant evacuation can be demonstrated to be accomplished in less than 7 minutes.

Point of Information These provisions are intended to facilitate the simultaneous building evacuation and firefighter response into the building.

AK. Rename and amend IBC Section 907.6.3.1, Annunciator panel, to read as follows:

[F] 907.6.3.1 Annunciator panel. All fire alarm systems in buildings without a fire command center shall be provided with an annunciator panel (or the main fire alarm control panel) located inside the building at the main addressed building entrance.

Exception: Other approved locations.

AL. Delete IBC Section 907.2.13.2, Fire department communication system.

AM. Add IBC Section 907.6.6.4, Monitoring required, to read as follows:

[F] 907.6.6.4 Monitoring required. When required by the fire code official, all new and existing fire detection systems shall be monitored and shall meet the requirements of Section 907.6.6. Wired phone lines (POTS) are not permitted for new monitoring.

AN. Amend IBC Section 909.10.2, Ducts, to read as follows:

[F] 909.10.2 Ducts. Duct materials and joints, including shafts acting as ducts, shall be capable of withstanding the probable temperatures and pressures to which they are exposed as determined in accordance with Section 909.10.1. Ducts shall be constructed and supported in accordance with the International Mechanical Code. Ducts shall be leak tested to 1.5 times the maximum design pressure in accordance with nationally accepted practices. Measured leakage shall not exceed 5 percent of design flow. Results of such testing shall be a part of the documentation procedure. Ducts shall be supported directly from fire-resistance-rated structural elements of the building by substantial, noncombustible supports.

Exception: Flexible connections for the purpose of vibration isolation, complying with the International Mechanical Code and that are constructed of approved fire-resistance-rated materials.

AO. Amend IBC Section 909.10.3, Equipment, inlets and outlets, to read as follows:

[F] 909.10.3 Equipment, inlets and outlets. Equipment shall be located so as to not expose uninvolved portions of the building to an additional fire hazard. Outdoor air inlets shall be located so as to minimize the potential for introducing smoke or flame into the building. Exhaust outlets shall be so located as to minimize reintroduction of smoke into the building and to limit exposure of the building or adjacent buildings to an additional fire hazard. In addition, supply air shall be taken directly from an outside, uncontaminated source located a minimum distance of 20 feet from any air exhaust system or outlet.

AP. Amend and rename IBC Section 909.11, Standby power, to read as follows:

[F] 909.11 Emergency power. Smoke control systems, including energy management systems used for smoke control or smoke removal, shall be provided with emergency power in accordance with Section 2702 and Table 2702.

Exception: In other than high-rise buildings, underground buildings, atriums, and covered mall buildings, smoke control systems shall be provided with legally required standby power in accordance with Section 2702 and Table 2702.

[F] 909.11.1 Power sources and power surges. Elements of the smoke control system relying on volatile memories or the like shall be supplied with uninterruptable power sources of sufficient duration to span 15-minute primary power interruption. Elements of the smoke control system susceptible to power surges shall be suitably protected by conditioners, suppressors or other approved means.

AQ. Amend IBC Section 909.12, Detection and control systems, to read as follows:

[F] 909.12 Detection and control systems. Fire detection systems providing control input or output signals to mechanical smoke control systems or elements thereof shall comply with the requirements of Section 907. Such systems shall be equipped with a control unit complying with UL 864 and listed as smoke control equipment.

Exception: Shaft pressurization equipment in buildings constructed in accordance with Washington Administrative Code 51-50-0504 or WAC 51-50-0510, or International Building Code Section 510.4 may utilize a fire detection system that is listed as releasing equipment.

[F] 909.12.1 Verification. Control systems for mechanical smoke control systems shall include provisions for verification. Verification shall include positive confirmation of actuation, testing, manual override and the presence of power downstream of all disconnects. A preprogrammed weekly test sequence shall report abnormal conditions audibly, visually, by printed report or other approved means. The preprogrammed weekly test shall operate all devices, equipment and components used for smoke control.

Exception: Where verification of individual components tested through the preprogrammed weekly testing sequence will interfere with, and produce unwanted effects to, normal building operation, such individual components are permitted to be bypassed from the preprogrammed weekly testing, where approved by the fire code official and in accordance with both of the following:

1. Where the operation of components is bypassed from the preprogrammed weekly test, presence of power downstream of all disconnects shall be verified weekly by a listed control unit.

2. Testing of all components bypassed from the preprogrammed weekly test shall be in accordance with Section 909.20.6 of the International Fire Code.

AR. Amend IBC Section 909.18.8.3, Reports, to add the following subsection, 909.18.8.3.2, Certificate of compliance, to read as follows:

[F] 909.18.8.3.2 Certificate of compliance. A certificate of compliance shall be provided by the special inspector and responsible registered design professional certifying that the referenced property is in substantial compliance. The certificate shall identify the company, designer, special inspector that performed the testing, and shall identify the name, date and address of the property being tested. The following statement must also be included in the certificate: "I have reviewed the report and by personal knowledge and on-site observation certify that the smoke control system is in substantial compliance with the approved design documents, and to the best of my understanding complies with requirements of the applicable codes as identified in the smoke control report.”

AS. Amend IBC Section 909.20, Smokeproof enclosures, to read as follows:

909.20 Smokeproof enclosures. Where required by Section 1023.12, a smokeproof enclosure shall be constructed in accordance with this section. All portions of the smokeproof enclosure ventilation system and equipment must comply with the provisions of Section 909. A smokeproof enclosure shall consist of an interior exit stairway or ramp that is enclosed in accordance with the applicable provisions of Section 1023, an open exterior balcony, ventilated vestibule or pressurized stair and pressurized entrance vestibule meeting the requirements of this section. Where access to the roof is required by the International Fire Code, such access shall be from the smokeproof enclosure where a smokeproof enclosure is required.

AT. Amend and rename IBC Section 909.20.7.2, Standby power, to read as follows:

909.20.7.2 Emergency power. Mechanical vestibule and stairway and ramp shaft ventilation systems and automatic fire detection systems shall be provided with emergency power in accordance with Section 2702 and Table 2702.

Exception: Legally required standby power systems shall be provided for pressurization systems in low-rise buildings when designed in accordance with IBC Section 504.4.1.

AU. Amend IBC Section 909.20.7.3, Acceptance and testing, to read as follows:

909.20.7.3 Acceptance and testing. Special inspection for performance shall be required in accordance with Section 909.18.8.

AV. Amend IBC Section 909.21.3, Ducts for system, to read as follows:

909.21.3 Ducts for system. Any duct system that is part of the pressurization system shall be protected with the same fire-resistance rating as required for the elevator shaft enclosure, and equipment, control wiring, power wiring, and ductwork shall comply with one of the methods specified in Section 909.20.7.1. Ducts shall be in accordance with Section 909.10.2.

Amend IBC Section 909.21.4.4, Fan capacity, to read as follows:

909.21.4.4 Fan capacity. The supply fan shall be either adjustable with a capacity of not less than 1,000 cfm (.4719 m3/s) per door, or that specified by a registered design professional to meet the requirements of a designed pressurization system. Fans shall be in accordance with Section 909.10.5.

Amend and rename IBC Section 911.1.2, Separation, to read as follows:

[F] 911.1.2 Separation and penetrations. The fire command center shall be separated from the remainder of the building by not less than a 2-hour fire barrier constructed in accordance with Section 707 or horizontal assembly constructed in accordance with section 711, or both. Penetrations into and openings through a fire command center are prohibited except for required exit doors; equipment and ductwork necessary for heating, cooling or ventilation; sprinkler branch line piping; electrical raceway for fire department communication and control; and electrical raceway serving the fire command center or being controlled from the fire command center. Such penetrations shall be protected in accordance with Section 714.

Exception: Metallic piping, with no joints or openings within the fire command center, is allowed if penetrations are protected in accordance with Section 714.

AW. Amend IBC Section 912.5, Signs, to read as follows:

[F] 912.5 Signs. A metal sign with raised letters not less than 1 inch (25 mm) in size shall be mounted on all fire department connections serving automatic sprinklers, standpipes or fire pump connections. Such signs shall read: SPRINKLERS, STANDPIPES, COMBINED, DRY S/PIPES, DRY S/P & SPKRS, BOOST TO (as specified by the fire code official) PSI, or TEST CONNECTION or a combination thereof as applicable. Systems utilizing Pressure Reducing Valves (PRV’s) must note the required boosted pressure at the Fire Department Connection in order to overcome the PRV setting. If it is not readily apparent which building or portion the fire department connection serves, the sign shall also include the premises address or building identification, and the portion of the building protected.

Exception: A metal sign with letters at least 1 inch (25 mm) in height may match the fire department connection where chrome, brass, or other approved decorative finish is utilized.

912.5.1 Markings. The fire department connection stand-alone pipe shall be painted red for greater visibility.

Exception: Fire department connections such as chrome, brass, or other approved decorative finish.

Point of Information Systems utilizing Pressure Reducing Valves (PRV’s) must note the required boosted pressure at the Fire Department Connection, in order to overcome the PRV setting.

AX. Amend IBC Section 913.1, General, to read as follows:

[F] 913.1 General. Where provided, fire pumps for fire protection systems shall be installed in accordance with this section and NFPA 20.

Exception: Pumps for automatic sprinkler systems installed in accordance with Section 903.3.1.3, or Section P2904 of the International Residential Code.

913.1.1 Fire Pump Controls. Fire pump controllers supplying standpipes in excess of 130 psi shall be soft start.

AY. Amend IBC Section 913.2, Protection against interruption of service, to read as follows:

[F] 913.2 Protection against interruption of service. The fire pump, driver and controller shall be protected in accordance with NFPA 20 against possible interruption of service through damage caused by explosion, fire, flood, earthquake, rodents, insects, windstorm, freezing, vandalism and other adverse conditions.

[F] 913.2.1 Protection of fire pump rooms and access. In high-rise buildings, fire pumps shall be located in rooms that are separated from all other areas of the building by 2-hour fire barriers constructed in accordance with Section 707 or 2- hour horizontal assemblies constructed in accordance with Section 711, or both. In other than high-rise buildings, separation shall consist of 1-hour fire barriers constructed in accordance with Section 707 or 1-hour horizontal assemblies constructed in accordance with Section 711, or both.

Fire pump rooms not directly accessible from the outside shall be accessible through an enclosed passageway from an interior exit stairway or exterior exit. The enclosed passageway shall have a fire-resistance rating not less than the fire- resistance rating of the fire pump room.

Exception: Where a fire pump is installed in a parking garage separated from the rest of the building by fire-rated construction equivalent to the pump room, and the portion of the building containing the fire pump is protected by a sprinkler system that does not rely on the fire pump, the protected access to the pump room shall not be required.

Rooms containing fire pumps shall be free from storage, equipment, and penetrations not essential to the operation of the pump and related components.

Exception: Equipment related to domestic water distribution shall be permitted to be located within the same room as the fire pump equipment.

Point of Information These provisions originate in NFPA 20 (2019) and are intended to facilitate fire department access to the fire pump room. Ideally fire pump rooms are located on the perimeter of the building affording direct access. Where that is not possible, a protected passageway is required. This passageway is not synonymous with an exit passageway and therefore not subject to the significant limitations of allowable penetrations. Fire pump rooms are not permitted to open directly into an exit passageway or interior exit stairway; rather the fire pump room must open into a vestibule before access to an exit passageway or an interior exit stairway.

AZ. Amend IBC Section 1008.3.4, Duration, to read as follows:

1008.3.4 Duration. The emergency power system shall provide power for a duration of not less than 90 minutes, or such time as stipulated by Section 2702 and Table 2702 when applicable for high-rise or underground buildings, and shall consist of storage batteries, unit equipment or an on-site generator. The installation of the emergency power system shall be in accordance with Section 2702.

AAA. Amend IBC Section 1009.8.1, System requirements, to read as follows:

1009.8.1 System requirements. Two-way communication systems shall provide communication between each required location and the fire command center or a central control point location approved by the fire department. Where the central control point is not a constantly attended location, the two-way communication system shall have a timed, automatic telephone dial-out capability that provides two-way communication with an approved supervising station. The two-way communication system shall include both audible and visible signals. The two-way communication system shall have a battery backup or an approved alternate source of power that is capable of a duration of operation in accordance with Section 2702 and Table 2702 upon failure of the normal power source.

AAB. Amend IBC Section 1010.1.6, Thresholds, to read as follows:

1010.1.6 Thresholds. Thresholds at doorways shall not exceed 3/4 inch (19.1 mm) in height above the finished floor or landing for sliding doors serving dwelling units or 1/2 inch (12.7 mm) above the finished floor or landing for other doors. Raised thresholds and floor level changes greater than 1/4 inch (6.4 mm) at doorways shall be beveled with a slope not greater than one-unit vertical in two units horizontal (50-percent slope).

Exceptions:

1. Occupancy Group R-2 or R-3, threshold heights for sliding and side-hinged exterior doors shall be permitted to be up to 7 3/4 inches (197 mm) in height if all of the following apply:

1.1 The door is not part of the required means of egress.

1.2 The door is not part of an accessible route as required by Chapter 11.

1.3 The door is not part of an Accessible unit, Type A unit or Type B unit.

2. In Type B units, where Exception 5 to Section 1010.1.5 permits a 4-inch (102 mm) elevation change at the door, the threshold height on the exterior side of the door shall not exceed 4 3/4 inches (120 mm) in height above the exterior deck, patio or balcony for sliding doors or 4 1/2 inches (114 mm) above the exterior deck, patio or balcony for other doors.

3. Thresholds at doors serving non-occupiable transformer rooms where emergency containment of oil and sprinkler water is required.

AAC. Amend IBC Section 1011.12.2, Roof access, to read as follows:

1011.12.2 Roof access. Where a stairway is provided to a roof, access to the roof shall be provided through a penthouse complying with Section 1511.2.

Exception: In buildings without an occupied roof, access to the roof shall be permitted to be a roof hatch or trap door not less than 16 square feet in area and having a minimum dimension of 3 feet.

AAD. Amend IBC Section 1026 to add Section 1026.6, Fire alarm and sprinkler zones, to read as follows:

1026.6 Fire alarm and sprinkler zones. When horizontal exits are provided the fire alarm and sprinkler systems shall be zoned to coincide with the horizontal exits.

Exception: Sprinkler zoning is not required in existing construction if fire alarm initiating devices provide the same level of occupant notification that a zoned sprinkler system would provide.

AAE. Amend IBC Section 1608.1, General, to read as follows:

1608.1 General. Design snow loads shall be determined in accordance with Chapter 7 of ASCE 7, but the design roof load shall not be less than 25 psf or that determined by Section 1607.

AAF. Amend IBC Section 1608.2, Ground snow loads, to read as follows:

1608.2 Ground snow loads. The ground snow loads to be used in determining the design snow loads for roofs shall be determined in accordance with the following:

Minimum design snow loads shall be determined by the Issaquah Ground Snow Load Map in accordance with King County Public Rule 16-04 Structural Loading: Minimum Roof Snow Loads. P_g=C_g *h_msl where P_g = ground snow load, C_g = ground snow load coefficient determined by interpolating the isolines established in the “King County Ground Snow Load Map,” and hmsl = site elevation in feet above sea level.

AAG. Amend IBC Section 1612.3, Establishment of flood hazard areas, to read as follows:

1612.3 Establishment of flood hazard areas. To establish flood hazard areas, the applicable governing authority shall adopt a flood hazard map and supporting data. The flood hazard map shall include, at a minimum, areas of special flood hazard as identified by the Federal Emergency Management Agency in an engineering report entitled “The Flood Insurance Study for King County, Washington and Incorporated Areas” dated August 19, 2020, with accompanying flood insurance rate maps (FIRMs) dated August 19, 2020, and any revisions thereto, which are adopted by reference and are declared to part of this chapter. In case of any conflicts between this section and Issaquah Municipal Code Chapter 16.36 regarding areas of special flood hazard, Issaquah Municipal Code Chapter 16.36 shall govern.

AAH. Amend IBC Section 1613.1, Scope, to read as follows:

1613.1 Scope. Every structure, and portion thereof, including nonstructural components that are permanently attached to structures and their supports and attachments, shall be designed and constructed to resist the effects of earthquake motions in accordance with Chapters 11, 12, 13, 15, 17 and 18 of ASCE 7, as applicable. The seismic design category for a structure is permitted to be determined in accordance with Section 1613 or ASCE 7.

Exceptions:

1. Detached one- and two-family dwellings, assigned to Seismic Design Category A, B, or C, or located where the mapped short-period spectral response acceleration, S_s, is less than 0.4 g.

2. The seismic force-resisting system of wood-frame buildings that conform to the provisions of Section 2308 are not required to be analyzed as specified in this section.

3. Agricultural storage structures intended only for incidental human occupancy.

4. Structures that require special consideration of their response characteristics and environment that are not addressed by this code or ASCE 7 and for which other regulations provide seismic criteria, such as vehicular bridges, electrical transmission towers, hydraulic structures, buried utility lines and their appurtenances and nuclear reactors.

5. References within ASCE 7 to Chapter 14 shall not apply, except as specifically required herein.

6. Seismic design of automatic sprinkler systems when hanging, bracing, and restraint is designed and installed in accordance with the currently adopted edition of NFPA 13 and the coefficient Cp for seismic bracing design calculations in accordance with NFPA 13 is either a value of 0.70, or a value based on site specific USGS data.

AAI. Amend IBC Section 2702.1, General, to read as follows:

[F] 2702.1 General. Emergency power systems and legally required standby power systems shall comply with Sections 2702.1.1 through 2702.1.11 and Table 2702.

AAJ. Amend IBC Section 2702.1.1, Stationary generators, to read as follows:

[F] 2702.1.1 Stationary generators. Stationary emergency and legally required standby power generators required by this code shall be listed in accordance with UL 2200.

AAK. Amend IBC Section 2702.1.3, Installation, to read as follows:

[F] 2702.1.3 Installation. Emergency power systems and legally required standby power systems required by this code or the International Fire Code shall be installed in accordance with the International Fire Code, NFPA 70, NFPA 110 and NFPA 111.

AAL. Amend IBC Section 2702.1.4, Load transfer, to read as follows:

[F] 2702.1.4 Load transfer. Emergency power systems shall automatically provide secondary power within 10 seconds after primary power is lost, unless specified otherwise in this code. Legally required standby power systems shall automatically provide secondary power within 60 seconds after primary power is lost, unless specified otherwise in this code. Transfer to full emergency or legally required standby power shall take place within the maximum time to energize loads specified in Table 2702.

Amend IBC Section 2702.1.5 Load duration to read as follows:

[F] 2702.1.5 Load duration. Emergency power systems and legally required standby power systems shall be designed to provide the required power for a minimum duration of 8 hours for fire pumps serving high-rise buildings in accordance with NFPA 20, and a minimum duration of 2 hours for other systems without being refueled or recharged, unless specified otherwise in this code.

AAM. Amend IBC Section 2702.1.7, Interchangeability, to read as follows:

[F] 2702.1.7 Interchangeability. Emergency power systems shall be an acceptable alternative for installations that require legally required standby power systems.

AAN. Amend IBC Section 2702.1 to add Section 2702.1.9, Equipment room, to read as follows:

[F] 2702.1.9 Equipment room. If a legally required standby or emergency power system includes a generator set inside or serving a building, the generator set shall be located in a separate room enclosed with 2-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both, to separate it from the remainder of the building, the transfer switches, and from the normal power source including transformers and distribution equipment. The transfer switches shall also be in a separate room enclosed with 2-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both, to separate it from the remainder of the building. Power distribution from the emergency source to the emergency transfer switch shall be by an independent route from the normal power source. Independent routes shall mean either a physical separation distance of not less than 50 feet, or a minimum of 1-hour fire-resistance rated separation. System supervision with manual start and transfer features shall be provided at the fire command center or an approved location when a fire command center is not required. Such equipment rooms shall be ventilated directly to the exterior for generator combustion air and radiator cooling air. Any ducts required for such ventilation shall not be dampered and shall be fire-resistance rated to the same level of protection as that required for the equipment room. The requirements of this subsection shall not apply to optional tenant-owned or landlord-owned generator sets.

Exception: Transfer switches shall be permitted to be in the same room as the legally required standby or emergency power system generator sets when inside or serving other than: 1) a high-rise building in accordance with Section 403; 2) an underground building in accordance with Section 405; and 3) a hospital in accordance with Section 407.

AAO. Amend IBC Section 2702.1 to add Section 2702.1.10, Smoke control power systems, to read as follows:

[F] 2702.1.10 Smoke control power systems. Smoke control equipment and systems requiring legally required standby or emergency power shall be supplied with two sources of power. Primary power shall be from the normal building power system. Legally required standby power or emergency power shall be from an approved source complying with NFPA 70. The legally required standby power or emergency power source and its transfer switches shall be in separate rooms from the normal power transformers and switchgears, and ventilated directly to and from the exterior. The room shall be completely enclosed in not less than 1-hour fire barriers constructed in accordance with Section 707, or 1-hour horizontal assemblies constructed in accordance with Section 711, or both, except 2-hour fire-resistance construction shall be required for high-rise and underground buildings per Sections 403 and 405 respectively. Power distribution from the two sources shall be by independent routes to the room containing the automatic transfer switch(s). Independent routes shall mean a physical distance of 50 feet or a minimum 1-hour fire-resistance rated separation. Transfer to full emergency power shall be automatic and shall take place within the maximum time to energize loads. The systems shall comply NFPA 70.

EXCEPTION: Ventilation is not required for rooms containing only transfer switches.

AAP. Amend IBC Section 2702.1 to add Section 2702.1.11, Fuel-fired generator sets and fuel storage location, to read as follows:

[F] 2702.1.11 Fuel-fired generator sets and fuel storage location. Fuel-fired generator sets and associated fuel storage, including optional landlord-owned or tenant-owned generator sets, located more than 75 feet above the lowest level of Fire Department vehicle access, or located at a floor level more than 30 feet below the lowest level of exit discharge, require the approval of the fire code official.

AAQ. Amend IBC Section 2702.2, Where required to read, as follows:

[F] 2702.2 Where required. Emergency and legally required standby power systems shall be provided where required by Sections 2702.2.1 through 2702.2.19 and other sections of this code.

AAR. Amend IBC Section 2702.2.2, Elevators and platform lifts, to read as follows:

[F] 2702.2.2 Elevators and platform lifts. Legally required standby power shall be provided for elevators and platform lifts used as accessible means of egress as required in Sections 1009.4.1 and 1009.5. Emergency power shall be provided for elevators in high-rise buildings where required by Table 2702.

AAS. Amend IBC Section 2702.2.3, Emergency responder ratio coverage systems, to read as follows:

2702.2.3 Emergency responder ratio coverage systems. Legally required standby power shall be provided for in-building 2-way emergency responder communication coverage systems required in Section 918 and the International Fire Code. The standby power supply shall be capable of operating the in-building 2-way emergency responder communication coverage system at 100-percent system operation capacity for a duration of not less than 12 hours.

AAT. Amend IBC Section 2702.2.4, Emergency voice/alarm communication systems, to read as follows:

[F] 2702.2.4 Emergency voice/alarm communication systems. Emergency power shall be provided for emergency voice/alarm communication systems as required in Section 907.5.2.2.5. The system shall be capable of powering the required load for a duration of not less than 24 hours, as required in NFPA 72.

Amend IBC Section 2702.2.5, Exhaust systems, to read as follows:

[F] 2702.2.5 Exhaust systems. Legally required standby power shall be provided for common exhaust systems for domestic kitchens located in multistory structures as required in Section 505.5 of the International Mechanical Code. Legally required standby power shall be provided for common exhaust systems for clothes dryers located in multistory structures as required in Section 504.11 of the International Mechanical Code and Section 614.11 of the International Fuel Gas Code.

AAU. Amend IBC Section 2702.2.7, Gas detection systems, to read as follows:

[F] 2702.2.7 Gas detection system. Emergency or legally required standby power shall be provided for gas detection systems in accordance with the International Fire Code.

AAV. Amend IBC Section 2702.2.10, Hazardous materials, to read as follows:

[F] 2702.2.10 Hazardous materials. Emergency or legally required standby power shall be provided in occupancies with hazardous materials where required by the International Fire Code.

AAW. Amend IBC Section 2702.2.11, High-rise buildings, to read as follows:

[F] 2702.2.11 High-rise buildings. Emergency and legally required standby power shall be provided in high-rise buildings as required in Table 2702.

AAX. Amend IBC Section 2702.2.12, Hydrogen fuel gas rooms, to read as follows:

[F] 2702.2.12 Hydrogen fuel gas rooms. Legally required standby power shall be provided for hydrogen fuel gas rooms as required by the International Fire Code.

AAY. Amend IBC Section 2702.2.13, Laboratory suites, to read as follows:

[F] 2702.2.13 Laboratory suites. Legally required standby or emergency power shall be provided for in accordance with Section 5004.7 of the International Fire Code where laboratory suites are located above the sixth story above grade plane or located in a story below grade plane.

AAZ. Amend IBC Section 2702.2.15, Membrane structures, to read as follows:

[F] 2702.2.15 Membrane structures. Legally required standby power shall be provided for auxiliary inflation systems in permanent membrane structures as required in Section 3102.8.2. Legally required standby power shall be provided for a duration of not less than 4 hours. Auxiliary inflation systems in temporary air-supported and air-inflated membrane structures shall be provided in accordance with Section 3103.10.4 of the International Fire Code.

ABA. Amend IBC Section 2702.2.17, Smoke control systems, to read as follows:

[F] 2702.2.17 Smoke control systems. Emergency power shall be provided for smoke control systems as required in Sections 404.7, 909.11, 909.20.6.2 and 909.21.5. Legally required standby power systems shall be provided for pressurization systems in low-rise buildings in accordance with IBC Sections 504.4.1, 909.20.6 and 909.21.5.

ABB. Amend IBC Section 2702.2.18, Special purpose horizontal sliding, accordion or folding doors, to read as follows:

[F] 2702.2.18 Special purpose horizontal sliding, accordion or folding doors. Legally required standby power shall be provided for special purpose horizontal sliding, accordion or folding doors as required in Section 1010.1.4.3. The standby power supply shall have a capacity to operate not fewer than 50 closing cycles of the door.

ABC. Amend IBC Section 2702.2.19, Underground buildings, to read as follows:

[F] 2702.2.19 Underground buildings. Emergency and legally required standby power shall be provided in underground buildings as required in Section 405.

ABD. Amend IBC Section 2702.4, Maintenance, to read as follows:

[F] 2702.4 Maintenance. Emergency and legally required standby power systems shall be maintained and tested in accordance with the International Fire Code.

ABE. Amend IBC Section 2702 to add Table 2702.2, Legally Required Standby and Emergency Power, to read as follows:

Table 2702. LEGALLY REQUIRED STANDBY AND EMERGENCY POWER

Type of Equipment	Maximum Time to Energize Loads	Minimum Run Time (Duration)	IBC Section	IFC or as Noted
Emergency Power Systems1
Exit signs	10 seconds	2 hours	1013.6.3	1013.6.3 Exit signs NFPA 70
Exit illumination	10 seconds	2 hours	1008.3	1008.3
Any emergency voice/alarm communication including area of refuge communication systems (barrier-free and horizontal exits)	Per NFPA 72	24 hours (battery); 4 hours (generator)	402.7.3, 402.7.4, and 907.5.2.2 Covered mall buildings 403.4.8 and 907.5.2.2 High-rises 405.8 and 907.2.1.1 Underground buildings 907.2.1 and 907.5.2.2 Assembly occupancies	907.2.20 Covered mall buildings 907.2.1.1 Assembly occupancies NFPA 72 907.2.12 Special amusement buildings
Fire detection and fire alarm	Per NFPA 72	24 hours (battery); 4 hours (generator)	403.4.8 High-rises 405.8 Underground buildings 909.20.7.2 Smokeproof enclosures	907.6.2 Power supply 907.2.12 Special amusement buildings NFPA 72
Smoke control systems in high-rise buildings, underground buildings, covered mall buildings, and atriums, including energy management systems if used for smoke control	60 seconds	2 hours	403.4.8 High-rises 404.7 Atriums 405.8 Underground buildings 909.11 Smoke control	909.11 Emergency power
Fire pumps in high-rise buildings and underground buildings	10 seconds	8 hours (NFPA 20)	403.4.8 High-rises 405.8 Underground buildings	913.2 All fire pumps NFPA 20
Smokeproof enclosures and elevator shaft pressurization	60 seconds for pressurization	4 hours	403.4.8 High-rises 909 and 909.20.7.2
Any shaft exhaust fans required to run continuously in lieu of dampers in high-rise and underground buildings	60 seconds	4 hours	717.5.3
Fire service or occupant evacuation elevator car operation in high-rise and underground buildings (including control system, motor controller, operation control, signal equipment, machine room cooling/heating, etc.)	60 seconds	4 hours	3003, 3007, and 3008
Elevator car lighting and communications in high-rise and underground buildings	10 seconds	4 hours	3003, 3007, and 3008
Lights, heating, and cooling for building fire command center and mechanical equipment rooms serving the fire command center	60 seconds	24 hours
Power (other than lights, heating and cooling) for building fire command center	60 seconds	4 hours
Mechanical and electrical systems required by IFC Chapter 27 (hazardous materials including UPS rooms)	60 seconds	4 hours		Chapter 27
Legally Required Standby1
Exhaust fans for any loading dock located interior to a building	60 seconds	4 hours
Transformer vault ventilation equipment	60 seconds	4 hours
Heat tape for sprinkler lines and heating in sprinkler riser rooms	60 seconds	24 hours
Fuel pump system for any legally required standby system	60 seconds	4 hours
Elevators used for accessible means of egress (in other than high-rise and underground buildings)	60 seconds	2 hours
Elevators (other than fire service or occupant evacuation elevators) in high-rise and underground buildings	60 seconds	2 hours
Any shaft exhaust fans required to run continuously in lieu of dampers (in other than high-rise and	60 seconds	4 hours	717.5.3
Auxiliary inflation systems	60 seconds	2 hours	3102.8.2	3103.10.4
Special purpose horizontal sliding, accordion or folding doors	60 seconds	2 hours	1010.3.3	1010.3.3
Hydrogen fuel gas rooms	60 seconds	2 hours	2702.2.12	5808.7 and 1203

FOOTNOTE:

1The fuel pump and associated systems for the emergency or legally required standby generator shall be provided with power from the generator to maintain fuel supply.