403.3.1.2 high-rise building sprinkler system design....403.3.1.2 high-rise building sprinkler...

2015 IBC City of Bellevue Amendments --Errata as of 4/2018-- Effective July 1, 2016

[F] 403.3 Automatic sprinkler system. – High-rise building. Buildings and structures shall beequipped throughout with an automatic sprinklersystem in accordance with Section 903.3.1.1 anda secondary water supply where required bySection 403.3.3.

403.3.1.2 High-rise building sprinklersystem design. Combination standpipe/sprinkler risers using 6 in. pipe minimum, shallbe used. Shut-off valves and water-flow devicesshall be provided on each floor at the sprinklersystem connection to each standpipe. Twofour-way fire department connections servingthe combination system shall be provided onseparate streets well separated from eachother. At least one of the fire departmentconnections shall be connected to the riserabove a riser isolation valve. Dry pipe sprinklersystems serving parking garages may use oneseparate two-way fire department connection.The dry pipe sprinkler system shall be suppliedby the on-site water tank.

[F] 403.3.2 Water supply to required fire pumps. Inbuildings that are more than 450 feet in building height,required fire pumps shall be supplied by connections tono fewer than two water mains located in differentstreets and shall not serve other buildings. Separatesupply piping shall be provided between eachconnection to the water main and the pumps. Eachconnection and the supply piping between theconnection and the pumps shall be sized to supply theflow and pressure required for the pumps to operate.

Exception: When approved by the fire codeofficial, two connections to the same mainshall be permitted provided the main is valvedsuch that an interruption can be isolated sothat the water supply will continue withoutinterruption through no fewer than one of theconnections.

[F] 403.3.3 Secondary water source. A secondaryon-site water source shall be provided for high-risebuilding as follows:

1. High-rise buildings containing R or B occupancyonly shall be provided with a net useable volumeof 15,000 gallons.

2. High-rise buildings containing an S-2 occupancyshall be provided with a net useable volume of40,000 gallons.

3. High-rise buildings containing an M occupancyshall be provided with a net useable volume of50,000 gallons.

4. Multi high-rise complexes that are less than 450’in height may share a common secondary watersource shall by combining the highest demand ofnumber 2 or 3 above, with number 1 above. Onlyone parking/retail area and 2 high-rise buildingsmay share a common secondary water source.

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An acceptable alternative to items 1 through 4 above,is to prove a calculated net useable volume capableof meeting the hydraulically calculated sprinkler

demand, including the total (combined inside andoutside) hose stream requirement, as per NFPA 13.The duration of the calculated source shall have aduration of not less than 30 minutes for buildings withlight hazard occupancies only and a 60 minute durationfor building with ordinary hazard occupancies asdefined by NFPA 13.

Exception: Existing buildings, including thoseundergoing substantial renovation.

403.4.8.1 Equipment room. If the standby oremergency power system includes a generator setinside a building, the system shall be in accordancewith Section 2702.1.8.

Exception: In Group I-2, Condition 2, manualstart and transfer features for the critical branch ofthe emergency power are not required to beprovided at the fire command center.

403.4.8.1.1 Penetrations. Penetrations intoand openings through an equipment roomcontaining a standby or emergency generatorset inside a building, are prohibited except forrequired exit doors, equipment and ductworknecessary for heating, cooling or ventilation,sprinkler branch line piping, or electricalraceway, serving the generator set equipmentroom or being served by the generator set.Such penetrations shall be protected inaccordance with Section 713.

Exception: Metallic piping with no joints oropenings where it passes through thegenerator set equipment room.

403.4.8.2 Fuel line piping protection. Fuel linessupplying a generator set inside a building shall be

separated from areas of the building other thanthe room the generator is located in by anapproved method or assembly that has a fireresistance rating of not less than 2 hours. Wherethe building is protected throughout with anautomatic sprinkler system installed inaccordance with Section 903.3.1.1 or 903.3.1.2,the required fire-resistance rating may be reducedto 1 hour.

403.5 Means of egress and evacuation. The meansof egress in high-rise buildings shall comply withSections 403.5.1 through 403.5.6, and in addition tothese requirements, shall comply with Bellevue CityCode 23.11.907.5.2.2.6, which requires either PhasedEvacuation, an additional stair, or occupant evacuationelevators, to facilitate simultaneous buildingevacuation and firefighter response into the building.

403.5.1 Remoteness of interior exit stairways.Required interior exit stairways shall be separatedby a distance not less than 30 feet (9144 mm) ornot less than one-fourth of the length of themaximum overall diagonal dimension of thebuilding or area to be served, whichever is less.The distance shall be measured in a straight linebetween the nearest points of the enclosuresurrounding the interior exit stairways. In buildingswith three or more interior exit stairways, no fewerthan two of the interior exit stairways shall complywith this section. Interlocking or scissor stairwaysshall be counted as one interior exit stairway.

403.5.2 Additional interior exit stairway. Forbuildings other than Group R-2 that are more than420 feet (128 000 mm) in building height, oneadditional interior exit stairway meeting therequirements of Sections 1011 and 1023 shall beprovided in addition to the minimum number of exitsrequired by Section 1006.3. The total width of anycombination of remaining interior exit stairwayswith one interior exit stairway removed shall be notless than the total width required by Section1005.1. Scissor stairs shall not be considered theadditional interior exit stairway required by thissection.

Exception: An additional interior exit stairwayshall not be required to be installed in buildingshaving elevators used for occupant self-evacuation in accordance with Section 3008.

403.5.3 Stairway door operation. Stairway doorsother than the exit discharge doors shall bepermitted to be locked from the stairway side.Stairway doors that are locked from the stairwayside shall be capable of being unlockedsimultaneously without unlatching upon a signalfrom the fire command center.

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2015 IBC City of Bellevue Amendments – Errata as of 4/2018 -- Effective July 1, 2016

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2015 IBC City of Bellevue Amendments – Errata as of 4/2018 Effective July 1, 2016

503.1.4 Occupied roofs. A roof level or portionthereof shall be permitted to be used as an occupiedroof provided the occupancy of the roof is anoccupancy that is permitted by Table 504.4 for the storyimmediately below the roof. The area of the occupiedroofs shall not be included in the building area asregulated by Section 506.

Exceptions:

1. The occupancy located on an occupied roofshall not be limited to the occupancies allowedon the story immediately below the roof wherethe building is equipped throughout with anautomatic sprinkler system in accordance withSection 903.3.1.1 or 903.3.1.2 and occupantnotification in accordance with Section 907.5 isprovided in the area of the occupied roof.

2. Assembly occupancies shall be permitted onroofs of open parking garages of Type I orType II construction, in accordance with theexception to Section 903.2.1.6.

Elements or structures enclosing the occupied roofareas shall not extend more than 48 inches above thesurface of the occupied roof.

Exception:

Penthouses constructed in accordance withSection 1510.2, and towers, domes, spires, andcupolas constructed in accordance with Section1510.5.

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2015 IBC City of Bellevue Amendments – Errata as of 4/2018-- Effective July 1, 2016


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2015 IBC City of Bellevue Amendments – Errata as of 4/2018-- Effective July 1, 2016

[F] 903.2.11 All occupancies. In all occupanciesother than Group U, an automatic sprinkler systemshall be installed for building design or hazards inthe locations set forth in Section 903.2.11.1through 903.2.11.7.

[F] 903.2.11.1 Stories and basements withoutopenings. An automatic sprinkler system shall beinstalled throughout all stories, includingbasements, of all buildings where the floor areaexceeds 1,500 square feet (139.4 m2) and wherethere is not provided at least one of the followingtypes of exterior wall openings:

1. Openings below grade that lead directly toground level by an exterior stairwaycomplying with Section 1011 or an outsideramp complying with Section 1012.Openings shall be located in each 50 linearfeet (15,240 mm), or fraction thereof, ofexterior wall in the story on at least oneside. The required openings shall bedistributed such that the lineal distancebetween adjacent openings does notexceed 50 feet (15 240 mm).

2. Openings entirely above the adjoiningground level totaling at least 20 square feet(1.86 m2) in each 50 linear feet (15,240mm), or fraction thereof, of exterior wall inthe story on at least one side. The requiredopenings shall be distributed such that thelineal distance between adjacent openingsdoes not exceed 50 feet (15 240 mm). Theheight of the bottom of the clear openingshall not exceed 44 inches (1118 mm)measured from the floor.

[F] 903.2.11.1.1 Opening dimensions andaccess. Openings shall have a minimumdimension of not less than 30 inches (762 mm).Such openings shall be accessible to the firedepartment from the exterior and shall not beobstructed in a manner that firefighting orrescue cannot be accomplished from theexterior.

[F] 903.2.11.1.2 Openings on one side only.Where openings in a story are provided on onlyone side and the opposite wall of such story ismore than 75 feet (22,860 mm) from suchopenings, the story shall be equippedthroughout with an approved automaticsprinkler system or openings as specifiedabove shall be provided on at least two sides ofthe story.

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2015 IBC City of Bellevue Amendments – Amended as of 3/5/2018 -- Effective March 5, 2018

SECTION 917FIREFIGHTER AIR SYSTEMS

[F] 917.1 Scope. The design, installation, andmaintenance of firefighter air systems shall be inaccordance with this section.

[F] 917.2 Required installations. Firefighter airsystem shall be installed in the following buildings:

1. Buildings classified as high-rise in accordancewith the International Building Code.

2. Transportation tunnels constructed inaccordance with NFPA 130 or 502 that exceed300’ in length.

[F] 917.3 Plans and contractor qualifications.

[F] 917.3.1 Plans. Prior to the installation of afirefighter air system, a minimum of two sets ofplans and specifications shall be submitted to theBellevue Fire Department for review andapproval. Plans shall demonstrate compliancewith the requirements of this section and shallinclude calculations prepared by a registeredprofessional engineer demonstrating that thedesign criteria for all pressure containingcomponents is satisfied plus a minimum safetyfactor of 25 percent.

The plans submittal shall also includespecifications for the tubing, fittings, andmanufacturer data sheets for valves, pressureregulators, pressure relief devices, gauges, RICuniversal air connections and cylinder fillinghoses.

[F] 917.3.2 Contractor qualification. Thefirefighter air system shall be installed byWashington state licensed contractors. Proof oflicensure shall be provided with the plansubmittal.

[F] 917.4 Design criteria.

[F] 917.4.1 The system shall be designed to fill,at each interior cylinder filling panel, two empty66 standard cubic foot compressed breathing aircylinders to a maximum pressure of 5,500 psig(37 921.17 kPa).

[F] 917.4.2 The filling operation shall becompleted in not more than two minutes uponconnection of the cylinders to the fill hose.

[F] 917.4.3 The minimum design flow of thebreathing air piping system shall be calculatedusing two interior cylinder filling panels operatingsimultaneously and located at the highest levelabove the most remote location from the basestation exterior fire department connection paneland enclosure base.

[F] 917.5 Operating pressure. All components usedin the system shall be rated to operate at a minimumpressure of 5,500 psig (37 921.17 kPa) at 70°F(210C).

[F] 917.6 Marking. System piping, gauges, valvesand air outlets shall be clearly marked by means ofsteel or plastic labels or tags indicating their function.Markings used for piping systems shall consist of thecontent’s name and include a direction of flow arrow.Markings shall be provided at each valve; at wall, flooror ceiling penetrations; at each change of direction;and at a minimum of every 20 feet (6096 mm) orfraction thereof throughout the piping system.

[F] 917.7 Base station exterior fire departmentconnection panel and enclosure.

[F] 917.7.1 Location.A fire department connection panel shall beattached to the building or on a remotemonument at the exterior of the building. Thepanel shall be secured inside of a weather-resistant enclosure. The panel shall be within 50feet (15 240 mm) of an approved roadway ordriveway, or other location approved by theBellevue Fire Department. The enclosure shall bevisible and accessible on approach to thebuilding.

[F] 917.7.2 Construction.The fire department connection panel shall beinstalled in a cabinet constructed of minimum 18-gauge carbon steel. When constructed of steel,the cabinet shall be provided with coating toprotect the cabinet from corrosion. When theenclosure is constructed of nonmetallic materials,the enclosure shall be resistant to ultraviolet andinfrared solar radiation.

[F] 917.7.3 Vehicle protection.When the panel is located in an area subject tovehicle traffic, impact protection shall be providedin accordance with this code.

[F] 917.7.4 Base station enclosure marking.The front of the enclosure shall be marked “FIRE-FIGHTER AIR SYSTEM” on securely attachedsteel, plastic engraved or painted plate. Thelettering shall be in a color that contrasts with theenclosure front and in letters that are a minimumof 2 inches (51 mm) high with 3/8-inch (9053mm) brush stroke. The marking of the enclosureshall be visible.

[F] 917.7.5 Base station enclosurecomponents.The components in the base station panel shallconsist of the necessary components to provideair to the air substations located on upper and/orlower building levels. The fire department airsupply source shall be designed to connect to the

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base station panel. The following componentsshall be installed in the base station enclosure.

1. Two Male Rapid Intervention Crew (RIC)Universal Air Connection (UAC) fittings.When connected to a female fitting, theassembled UAC shall meet the construction,performance and dimensional requirementsof NFPA 1981, Standard on Open-CircuitSelf-Contained Breathing Apparatus for Fireand Emergency Services.

2. One downstream shutoff valve.

3. One pressure gauge to check pressure ofthe piping distribution to air substationslocated on upper and lower building levels.

4. One pressure relief valve designed for 1.25times the design discharge of the firedepartment air supply or air supply trucks. Allfittings, hoses and hard piping in the basestation supply panel and distribution piping toair substations supply panels, shall bedesigned for an air pressure of 1.5 times thepressure of the fire department air deliverysystem.

5. Base station can be designed for an airpressure supply piping system for supply ofair to air substations.

The air supply lines will require anintermediate regulator to provide air pressurefor a 5,500 psi (37 921.17 kPa), for a 5.5 airpack system. The air supply lines will befitted with separate pressure relief valves setat 1.25 times the working pressure of the airsupply line and the operating pressure of thepressurized lines.

6. The relief valve, piping, pressure regulator,pressure gauges, fittings and connectionhoses shall meet the requirement of theASME Boiler and Pressure Code, 7 SectionVIII, Unified Pressure Vessel Code. Theinstallation of the piping system, as aminimum, will be based on ASME B31.3-2012.

7. Mechanical supports for piping, hoses,gauges and pressure components, will bedesigned and built to provide a solid rigidstructure.

[F] 917.7.6 Security.To prevent unauthorized access to or tamperingwith the system, the fire department connectionpanel enclosure shall remain locked by anapproved means.

[F] 917.7.7 Fire department key box.A fire department key box shall be providedadjacent to the fire department connection paneland enclosure. A key for the enclosure shall beprovided in the key box.

[F] 917.8 Interior cylinder fill panels andenclosure—air substation.

[F] 917.8.1 Location. Cylinder fill panels shall beinstalled in the interior of buildings as follows:

1. Aboveground structure. An interior airsubstation cylinder fill panel andenclosure shall be installed on floorlandings. In buildings classified as high-rise in two stairwells as approved by thefire code official regardless of height ofbuildings commencing on the secondfloor landing above grade, below gradeand every other floor thereafter.Approved stairwells must extend the fullheight of the building and separated inaccordance with International BuildingCode Section 403.5.1

2. Underground structure. An interior airsubstation cylinder fill panel andenclosure shall be installed in twostairwells as approved by the fire codeofficial on the floor landing on the thirdlevel below grade and every other below-grade level thereafter. The panel shall belocated a minimum of 36 inches (914mm) but not more than 60 inches (1524mm) above the finished floor or astairway landing. Approved stairwellsmust extend the full height of theunderground structure and separated inaccordance with International BuildingCode Section 1007.1.1

3. Transportation tunnels. An interior airsubstation cylinder fill panel andenclosure shall be installed within 200’ ofthe tunnel entrance and then at intervalsnot exceeding 400’ thereafter. All fillpanels shall be located within 10’ ofstandpipe hose connections. The panelshall be located a minimum of 36 inches(914 mm) but not more than 60 inches(1524 mm) above the finished floor.

[F] 917.8.2 Cabinet requirements.Each air substation cylinder fill panel shall beinstalled in a cabinet constructed of minimum 18-gauge carbon steel. The depth of the cabinetshall not create an exit obstruction when installedin building stairways. All components, with theexception of the shutoff valve, pressure gauges,fill hoses and ancillary components, shall becontained behind a minimum 18-gauge interiorpanel.

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[F] 917.8.3 Door.Hinges for the cabinet door shall be locatedinside of the cabinet. The door shall be arrangedsuch that when the door is open, it does notreduce the required exit width or create anobstruction in the path of egress. A minimum of80 percent of the door surface area shall beconstructed of tempered glass. The thickness ofthe glass shall not be greater than 1/8 inch (3.17mm).

[F] 917.8.4 Cabinet marking.The front of each cylinder fill panel shall bemarked “FIREFIGHTER AIR SYSTEM.” Thelettering shall be in a color that contrasts with thecabinet front and in letters that are a minimum of2 inches (50mm) high with 3/8-inch (5 mm) brushstroke. The marking of the cabinet shall be visibleto emergency response personnel.

[F] 917.8.5 Air substation cabinetcomponents.The cabinet shall be of sufficient size to allow forthe installation of the following components:

1. One-isolation valve located between theair discharge line to the next air substationand the downstream line to the air basestation supply or the air substationimmediately below to the next substationabove the air base station.

2. The fill hoses and isolation valves shallbe installed between the air bottleconnection line and the fresh air supply.

3. Excess bleed valves shall be locatedbetween the air bottle fill hose and the nextair substation.

4. Four SCBA fill hoses are required at asingle air substation, the air supply linesshall be identified as 5,500 psig (37 921.17kPa) pressure and shall be controlled by asingle valve between the air supply and airbottle. The SCBA fill hoses shall be designedwith RIC UAC fittings. A protective cap shallbe provided for each hose.

5. Mechanical supports for piping, hoses,gauges and pressure components shall bedesigned and built to provide a solid rigidstructure.

[F] 917.8.6 Cylinder filling hose.The design of the cabinet shall provide a meansfor storing the hose to prevent kinking. When thehose is coiled, the brackets shall be installed sothat the hose bend radius is maintained at 4inches (102 mm) or greater.

The discharge outlet of each cylinder filling hoseshall have a female RIC UAC. The female fittingshall be designed to connect to a male RIC UAC.The assembled RIC UAC shall meet the

construction, performance and dimensionalrequirements of NFPA 1981, Standard on OpenBreathing Circuit Self-Contained BreathingApparatus for Fire and Emergency Services.

[F] 917.8.7 Security.To prevent unauthorized access to or tamperingwith the system, each panel cover shall remainlocked by an approved means.

[F] 917.9 Installation of components.

[F] 917.9.1 Air monitoring system.An approved air monitoring system shall beprovided. The system shall automatically monitorair quality, moisture and pressure on a continualbasis. The air monitoring system shall beequipped with not less than two contentanalyzers capable of detecting carbon monoxide,carbon dioxide, nitrogen, oxygen, moisture andhydrocarbons.

[F] 917.9.1.1 Alarm conditions.The air monitoring system shall transmit asupervisory signal when any of the followinglevels are detected:

1. Carbon monoxide exceeds 5 ppm.2. Carbon dioxide exceeds 1,000 ppm.3. An oxygen level below 19.5 percent orabove 23.5 percent.4. A nitrogen level below 75 percent orabove 81 percent.5. Hydrocarbon (condensed) contentexceeds 5 milligrams per cubic meter ofair.6. The moisture concentration exceeds24 ppm by volume.7. The pressure falls below 4,950 psig(34 129.05 kPa) at 70° F (210C)

[F] 917.9.1.2 Alarm supervision,monitoring and notification.The air monitoring system shall beelectrically supervised and monitored by anapproved supervising station.

[F] 917.9.1.3 Air quality status display.Air quality status shall be visually displayedat within the fire command center.

[F] 917.9.2 Tubing.Piping shall be constructed of stainless steel orother approved materials that are compatible withbreathing air. The use of nonmetallic materialsshall be compatible with breathing air. Whenstainless steel tubing is used, it shall meet ASTMA-269, Grade 316 or an equal standard.Stainless steel fitting shall be Grade 316 and aminimum, 0.375 inch (9.5 mm) outside diameterby .065 inch (1.6 mm) wall Grade 316 fullyannealed seamless. Stainless steel fittings shallbe at least Grade 316 and meet the requirements

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of ASTMA 479 or equal. Routing of tubing andbends shall be such as to protect the tubing frommechanical damage.

[F] 917.9.3 Support.Piping shall be supported at maximum intervalsof 5 feet (1524 mm). Individual tubing clamps andmounting components shall be mechanicallysecured to the building support members inaccordance with the manufacturer’sspecifications.

[F] 917.9.4 Fittings.Fittings shall be constructed of stainless steel orother approved materials that are compatible withbreathing air. The use of nonmetallic materialsshall be compatible with breathing air. Stainlesssteel fittings shall be at least Grade 316 and meetthe requirements of ASTMA 479 or an equalstandard.

[F] 917.9.5 Prohibition.The use of carbon steel, iron pipe, malleable iron,high-strength gray iron or alloy steel is prohibited.

[F] 917.10 System assembly requirements.The system shall be welded except where the tubingjoints are readily accessible and at the individual airfill panels. When mechanical high-pressure tubefittings are used, they shall be approved for the typeof materials to be joined and rated for the maximumpressure of the system. Welding procedures shallmeet ASME B31.1-2010, Part 4 and Chapter V(Exhibit VI). Prior to and during the welding ofsections of tubing, a continuous, regulated drynitrogen or argon purge at 3 psig (20.68 kPa) shall bemaintained to eliminate contamination with productsof the oxidation or welding flux. The purge shallcommence a minimum of 2 minutes prior to weldingoperations and continue until the welded joint is at anambient temperature between 60° F and 80°F (15.5°Cand 26.6°C).

[F] 917.11 Prevention of contamination.The installing contractor shall ensure that, at all times,the system components are not exposed tocontaminants, including, but not limited to, oils,solvents, dirt and construction materials. Whencontamination of system components has occurred,the effected component shall not be installed in thesystem.

[F] 917.12 Testing and inspection.

[F] 917.12.1 Testing.Following fabrication, assembly, and installationof the piping distribution system, exteriorconnection panel and interior cylinder fill panels,the Bellevue Fire Department shall witness thepneumatic testing of the complete system at aminimum test pressure of 6,050 psi (41 368.54kPa) using oil-free dry air, nitrogen or argon. Aminimum 24-hour pneumatic or hydrostatic test

shall be performed. During this test all fittings,joints and system components shall be inspectedfor leaks. A solution compatible with the systemcomponent materials shall be used on each jointand fitting. Any defects in the system or leaksdetected shall be documented on an inspectionreport, repaired or replaced. As an alternate, apressure decay test in accordance with ASMEB31.3 is allowed. A test of the low-pressuremonitoring switch shall be performed. Each air fillpanel shall be tested for compatibility with the firedepartment’s SCBA RIC UAC. The pipe or tubingmanufacturer mill report shall be provided to theBellevue Fire Department.

[F] 917.12.2 Air samples.A minimum of two samples shall be taken fromseparate air fill panels and submitted to anindependent, certified gas analysis laboratory toverify the system’s cleanliness and that the air iscertified as breathing air. The laboratory shallsubmit a written report of the analysis to theBellevue Fire Department documenting that thebreathing air complies with this section.

[F] 917.12.3 Quality analysis.During the period of air quality analysis, the air fillpanel inlet shall be secured so that no air can beintroduced into the system and each air fill panelshall be provided with a sign stating: “AIRQUALITY ANALYSIS IN PROGRESS, DO NOTFILL OR USE ANY AIR FROMTHIS SYSTEM.”This sign shall be a minimum of 8 1/2 by 11inches (215mm by 279 mm) with a minimum of 1-inch (25 mm) lettering.

[F] 917.12.4 Periodic Inspection, Testing andMaintenance.The Firefighter Air System shall be continuouslymaintained in an operative condition and shall beinspected not less than annually. Annually two airsamples shall be taken from two separate fillingstations and tested to veryify compliance withNFPA 1989. The laboratory test results shall bemaintained on site and readily available forreview by the Bellevue Fire Department.

[F] 917.13 System acceptance and certification.Prior to the final acceptance of the air system, thebuilding owner shall provide for the testing andcertification of the system. As a minimum, this shallinclude verifying the system’s compatibility with thefire department’s SCBA apparatus; the system’sability to maintain 5,500 psi (37 921.17 kPa) workingpressure; the operability of the low-pressuremonitoring switch and that the system’s air qualitycomplies with the requirements of Section 915.12.Prior to final acceptance, the building owner shallprovide the Bellevue Fire Department with writtenverification of a testing and certification contract.Upon satisfactory completion of all tests andverification of air quality, the system shall beconsidered complete.

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1612.3 Establishment of flood hazard areas. Toestablish flood hazard areas, the applicable governingauthority shall adopt a flood hazard map andsupporting data. The flood hazard map shall include, ata minimum, areas of special flood hazard as identifiedby the Federal Emergency Management Agency in anengineering report entitled “The Flood Insurance Studyfor King County,” dated May 16, 1995, as amended orrevised with the accompanying Flood Insurance RateMap (FIRM) and Flood Boundary and Floodway Map(FBFM) and related supporting data along with anyrevisions thereto. The adopted flood hazard map andsupporting data are hereby adopted by reference anddeclared to be part of this section.

1612.3.1 Design flood elevations. Where designflood elevations are not included in the flood hazardareas established in Section 1612.3, or wherefloodways are not designated, the building officialis authorized to require the applicant to:

1. Obtain and reasonably utilize any designflood elevation and floodway data availablefrom a federal, state or other source; or

2. Determine the design flood elevation and/orfloodway in accordance with the City ofBellevue LUC 20.25H.175A and Surface WaterEngineering Standards, Section D4-04.5,“Floodplain/Floodway Analysis” to definespecial flood hazard areas. Determinationsshall be undertaken by a registered designprofessional who shall document that thetechnical methods used reflect currentlyaccepted engineering practice.

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1612.3.2 Determination of impacts. In riverineflood hazard areas where design flood elevationsare specified but floodways have not beendesignated, the applicant shall provide a floodwayanalysis that demonstrates that the proposed workwill meet the City of Bellevue Surface WaterEngineering Standards, Section D4-04.5,“Floodplain/Floodway Analysis.”

1612.4 Design and construction. The design andconstruction of buildings and structures located inflood hazard areas, including flood hazard areassubject to high-velocity wave action, shall be inaccordance with Chapter 5 of ASCE 7 ASCE 24 andwith BCC Section 20.25H.175.

SECTION 1613EARTHQUAKE LOADS

1613.1 Scope. Every structure, and portion thereof,including nonstructural components that arepermanently attached to structures and their supportsand attachments, shall be designed and constructed toresist the effects of earthquake motions in accordancewith ASCE 7, excluding Chapter 14 and Appendix 11A.The seismic design category for a structure ispermitted to be determined in accordance with Section1613 or ASCE 7.

Exceptions:

1. Detached one- and two-family dwellings,assigned to Seismic Design Category A, B, orC, or located where the mapped short-periodspectral response acceleration, Ss, is less than0.4 g.

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

3. Agricultural storage structures intended onlyfor incidental human occupancy.

4. Structures that require special considerationof their response characteristics andenvironment that are not addressed by thiscode or ASCE 7 and for which other regulationsprovide seismic criteria, such as vehicularbridges, electrical transmission towers,hydraulic structures, buried utility lines and theirappurtenances and nuclear reactors.

5. Seismic design of automatic sprinklersystems when hanging, bracing, and restraint isdesigned and installed in accordance with the2013 edition of NFPA 13 and the coefficient Cpfor seismic bracing design calculations inaccordance with NFPA 13 is either a value of0.70, or a value based on site specific USGSdata.



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SECTION 2701GENERAL

2701.1 Scope. This chapter governs the electricalcomponents, equipment and systems used inbuildings and structures covered by this code.Electrical components, equipment and systems shallbe designed and constructed in accordance with theprovisions of the Washington Cities Electrical Code.

SECTION 2702EMERGENCY AND LEGALLY REQUIRED

STANDBY POWER SYSTEMS

[F] 2702.1 Installation. Emergency power systemsand legally required standby power systems shallcomply with Sections 2702.1.1 through 2702.1.7 andTable 2702.

[F] 2702.1.1 Stationary generators. Stationaryemergency and legally required standby powergenerators required by this code shall be listed inaccordance with UL 2200.

[F] 2702.1.2 Electrical. Emergency power systemsand legally required standby power systemsrequired by this code or the International Fire Codeshall be installed in accordance with theInternational Fire Code, the Washington CitiesElectrical Code, NFPA 110 and NFPA 111.

[F] 2702.1.3 Load transfer. Emergency powersystems shall automatically provide secondarypower within 10 seconds after primary power is lost,unless specified otherwise in this code. Legallyrequired standby power systems shallautomatically provide secondary power within 60seconds after primary power is lost, unlessspecified otherwise in this code. Transfer to fullemergency or legally required standby power shalltake place within the maximum time to energizeloads specified in Table 2702.

[F] 2702.1.4 Load duration. Emergency powersystems and legally required standby powersystems shall be designed to provide the requiredpower for a minimum duration of 8 hours for firepumps serving high-rise buildings in accordancewith NFPA 20, and 2 hours for other systemswithout being refueled or recharged, unlessspecified otherwise in this code.

[F] 2702.1.5 Uninterruptable power source. Anuninterrupted source of power shall be provided forequipment when required by the manufacturer’sinstructions, the listing, this code or applicablereferenced standards.

[F] 2702.1.6 Interchangeability. Emergencypower systems shall be an acceptable alternativefor installations that require standby powersystems.

[F] 2702.1.7 Group I-2 occupancies. In Group I-2occupancies, in new construction or where thebuilding is substantially damaged, where anessential electrical system is located in floodhazard areas established in Section 1612.3, thesystem shall be located and installed in accordancewith ASCE 24.

[F] 2702.1.8 Equipment room. If a legally requiredstandby or emergency power system includes agenerator set inside or serving a building, thegenerator set shall be located in a separate roomenclosed with 2-hour fire barriers constructed inaccordance with Section 707 or horizontalassemblies constructed in accordance with Section711, or both, to separate it from the remainder ofthe building, the transfer switches, and from thenormal power source including transformers anddistribution equipment. The transfer switches shallalso be located in a separate room enclosed with2-hour fire barriers constructed in accordance withSection 707 or horizontal assemblies constructedin accordance with Section 711, or both, toseparate it from the remainder of the building.Power distribution from the emergency source tothe emergency transfer switch shall be by anindependent route from the normal powersource. Independent routes shall mean either aphysical separation distance of not less than 50feet, or a minimum 1-hour fire-resistance ratedseparation System supervision with manual startand transfer features shall be provided at the firecommand center or an approved location when afire command center is not required. Suchequipment rooms shall be ventilated directly to theexterior for generator combustion air and radiatorcooling air. Any ducts required for such ventilationshall not be dampered, and shall be fire-resistancerated to the same level of protection as thatrequired for the equipment room. Therequirements of this subsection 2702.1.8 do notapply to optional tenant-owned or landlord-ownedgenerator sets.

Exception:

1. Legally required standby or emergencypower system generator sets inside abuilding other than a high-rise buildingin accordance with Section 403 andother than an underground buildingspace in accordance with Section 405,may be located in equipment roomswith a 1-hour fire-resistance rating.(Page 567a)


2. Transfer switches shall be permitted tobe located in the same room as thelegally required standby or emergencypower system generator sets wheninside or serving buildings that areneither a high-rise building inaccordance with Section 403, nor anunderground building in accordancewith Section 405.

[F] 2702.1.9 Smoke control power systems.Smoke control equipment and systems requiringlegally required standby or emergency power shallbe supplied with two sources of power. Primarypower shall be from the normal building powersystem. Legally required standby power oremergency power shall be from an approvedsource complying with the Washington CitiesElectrical Code. The legally required standbypower or emergency power source and its transferswitches shall be in separate rooms from thenormal power transformers and switch gears, andventilated directly to and from the exterior. Theroom shall be completely enclosed in not less than1-hour fire barriers constructed in accordance withSection 707, or 1-hour horizontal assembliesconstructed in accordance with Section 711, orboth, except 2-hour fire-resistance constructionshall be required for high-rise and undergroundbuildings per Sections 403 and 405 respectively.Power distribution from the two sources shall be byindependent routes to the room containing theautomatic transfer switch(s). Independent routesshall mean either a minimum 1-hour fire-resistanceseparation, or a physical distance of not less than50 feet. Transfer to full emergency power shall beautomatic and shall take place within the maximumtime to energize loads. The systems shall complywith the Washington Cities Electrical Code.

[F] 2702.1.10 Fuel-fired generator sets and fuelstorage location. Fuel-fired generator sets andassociated fuel storage, including optional landlord-owned or tenant-owned generator sets, locatedmore than 75 feet above the lowest level of FireDepartment vehicle access, or located at a floorlevel more than 30 feet below the lowest level ofexit discharge, require the approval of the fire codeofficial.

[F] 2702.2 Where required. Emergency and legallyrequired standby power systems shall be providedwhere required by Sections 2702.2.1 through2702.2.16 and other sections of this code.

[F] 2702.2.1 Emergency alarm systems.Emergency power shall be provided for emergencyalarm systems as required by Section 415.5.

[F] 2702.2.2 Elevators and platform lifts. Legallyrequired standby power shall be provided forelevators and platform lifts used as accessiblemeans of egress as required in Sections 1009.4and 1009.5. Emergency power shall be providedfor elevators in high-rise buildings as required inSection 403.4.8.4.

[F] 2702.2.3 Emergency responder radiocoverage systems. Standby power shall beprovided for emergency responder radio coveragesystems required in Section 916 and theInternational Fire Code. The standby power supplyshall be capable of operating the emergencyresponder radio coverage system for a duration ofnot less than 24 hours.

[F] 2702.2.4 Emergency voice/alarmcommunication systems. Emergency powershall be provided for emergency voice/alarmcommunication systems as required in Section907.5.2.2.5. The system shall be capable ofpowering the required load for a duration of notless than 24 hours, as required in NFPA 72.

[F] 2702.2.5 Exit signs. Emergency power shall beprovided for exit signs as required in Section1013.6.3. The system shall be capable of poweringthe required load for a duration of not less than 90minutes.

[F] 2702.2.6 Group I-2 occupancies. Essentialelectrical systems for Group I-2 occupancies shallbe in accordance with Section 407.10.

[F] 2702.2.7 Group I-3 occupancies. Emergencypower shall be provided for power-operated doorsand locks in Group I-3 occupancies as required inSection 408.4.2.

[F] 2702.2.8 Hazardous materials. Emergency orlegally required standby power shall be provided inoccupancies with hazardous materials whererequired by the International Fire Code.

[F] 2702.2.9 High-rise buildings. Emergencypower shall be provided in high-rise buildings asrequired in Section 403.4.8.

[F] 2702.2.10 Horizontal sliding doors. Legallyrequired standby power shall be provided forhorizontal sliding doors as required in Section1010.1.4.3. The standby power supply shall have acapacity to operate not fewer than 50 closing cyclesof the door.

[F] 2702.2.11 Means of egress illumination.Emergency power shall be provided for means of

(Page 567b)


egress illumination as required in Section 1008.3.The system shall be capable of powering therequired load for a duration of not less than 90minutes.

[F] 2702.2.12 Membrane structures. Legallyrequired standby power shall be provided forauxiliary inflation systems in permanent membranestructures as required in Section 3102.8.2. Legallyrequired standby power shall be provided for aduration of not less than 4 hours. Auxiliary inflationsystems in temporary air-supported and air-inflatedmembrane structures shall be provided inaccordance with Section 3103.10.4 of theInternational Fire Code.

(Insert Facing Page 567)

403.3.1.2 high-rise building sprinkler system design....403.3.1.2 high-rise building sprinkler...

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