City of Walnut Creek Development Review Services 1666 N. Main Street, Walnut Creek, CA (925) phone (925) fax

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Summary of Automatic Sprinkler Thresholds f Commercial and Multifamily Residential Projects This bulletin summarizes automatic sprinkler thresholds f commercial and multifamily residential projects

1 Summary of Automatic Sprinkler Thresholds f Commercial and Multifamily Residential Projects This bulletin summarizes automatic sprinkler thresholds f commercial and multifamily residential projects accding to occupancy, use and specific areas. The requirements are based on the 2013 Califnia Fire (CFC) and Califnia Building (CBC). Highlighted ptions denote local amendments adopted by the City of Walnut Creek and the Contra Costa County Fire Protection District. These local amendments generally lower the fire area thresholds f new buildings, additions and changes of occupancy classification. The effective date of these amendments is March 6, The Contra Costa County Fire Protection District will perfm plan review and inspection services related to automatic fire sprinkler systems. Therefe, please verify the requirements in this bulletin with the Fire Protection District as they apply to your specific project. NEW BUILDINGS The table below lists code provisions f fire sprinkler triggers and thresholds. F new commercial buildings, the local amendments generally lower the fire area trigger to 5,000 sq. ft., as highlighted. Summary of Use- and -Related Automatic Sprinkler Thresholds f New Buildings Based on 2013 CFC and CBC City amendments highlighted (effective March 6, 2014) Sprinkler Threshold A-1 Fire area > 5,000 sq. ft. Throughout flo area Fire area occupant load 300 where occupancy is Fire area above below level located, and in all flos Fire area contains multitheater occupancy to nearest complex level A-2 Fire area > 5,000 sq. ft. Throughout flo area Fire area occupant load 100 Fire area above below level where occupancy is located, and in all flos occupancy to nearest level , Structure > 5,000 sq. ft, contains me than 1 fire area containing A-2, and is separated into 2 me buildings by fire walls of < 4-hour rating without openings A-3 Fire area > 5,000 sq. ft. Throughout flo area Fire area occupant load 300 where occupancy is , Fire area above below level located, and in all flos Created March 15, 2011 Page 1 of 7

2 Sprinkler Threshold Structure > 10,000 sq. ft, contains me than 1 fire area containing exhibition and display rooms, and is separated into 2 me buildings by fire walls of < 4-hour rating without openings occupancy to nearest level A-4 Fire area > 5,000 sq. ft. Throughout flo area Fire area occupant load 300 Fire area above below level where occupancy is located, and in all flos occupancy to nearest level A-5 Accessy areas > 1,000 sq. ft. Concessions stands, retail areas, press boxes and other accessy areas Ambulaty Care Facility 4 care recipients incapable of self-preservation Any care recipient incapable of self-preservation above below level Throughout flo containing ambulaty care facility and where ambulaty care is provided on levels other than level of exit discharge, entire flo where care is provided and all flos below and between level of ambulaty care and nearest level of exit discharge, including level , , CBC 422.6, CFC B Fire area > 5,000 sq. ft. Throughout occupancy CFC , E Fire area > 5,000 sq. ft. Throughout fire area Any area below level of exit discharge Throughout area below level Sprinklers not required where every classroom has exteri exit do at grade , Created March 15, 2011 Page 2 of 7

3 Sprinkler Threshold Area with special hazards such as labs and vocational shops where hazardous material quantities used sted are maximum allowable quantity Structure > 10,000 sq. ft., containing > 1 fire area, and separated into 2 buildings by fire walls < 4 hours without openings Public school state funded construction project (see ) In areas with special hazards Throughout Group E structure All occupancies F-1 Fire area > 5,000 sq. ft. Throughout building Fire area located > 3 sties containing Group F-1 above grade plane Combined fire area on all flos including any mezzanine > 10,000 sq. ft. Manufacturing of upholstered furniture mattresses > 2,500 sq. ft. Woodwking operations > 2,500 sq. ft. Throughout F-1 fire area containing woodwking operations > 2,500 sq. ft. Created March 15, 2011 Page 3 of 7 Sprinklers not required f a, a relocatable building that is sited with intent to be at site f <3years on tempary foundation detached buildings f non-instructional purposes that meet the requirements f that occupancy including concession stands, press boxes, restroom facilities, shade structures, snack bars, stage buildings ticket booths , H Sprinklers required Throughout occupancy I Sprinklers required Throughout building containing Group I L Sprinklers required Throughout building containing Group L

4 Sprinkler Threshold M Fire area > 5,000 sq. ft. Throughout building Fire area located > 3 sties above grade plane containing Group M , Combined fire area on all flos including any mezzanine > 10,000 sq. ft. Display and sale of upholstered furniture > 5,000 sq. ft. Structure > 10,000 sq. ft., containing > 1 fire area, and separated into 2 buildings by fire walls < 4 hours High-piled stage R-1 Sprinklers required Throughout building R-2 Sprinklers required Throughout building R-2.1 Sprinklers required Throughout building See s 3 and 4 R-4 Sprinklers required Throughout building See s 3 and 4 S-1 Fire area > 5,000 sq. ft. Throughout building Fire area located > 3 sties containing Group S-1 above grade plane Combined fire area on all flos including any mezzanine > 10,000 sq. ft. Fire area f stage of commercial trucks and buses where fire area > 5,000 sq. ft. Stage of upholstered furniture mattresses > 2,500 sq. ft. S-1 Fire area containing repair Throughout building used Repair garage > 5,000 sq. ft. as repair garage Garage Repair garage servicing vehicles in basement S-1 Bulk Tire stage > 20,000 cu. ft. Throughout building and stage of structures tires S-2 Enclosed Parking Garage Fire area > 5,000 sq. ft. Located beneath other occupancy groups Throughout building classified as enclosed parking garage , CBC , CBC , , , Created March 15, 2011 Page 4 of 7

5 All occupancies except U All occupancies except U All occupancies except U Sprinkler Threshold Sty without openings where flo area > 1,500 sq. ft. and where there is not provided at least one of the types of exteri wall openings specified in CBC Building with a flo level 55 feet above fire department vehicle access and occupant load 30 Rubbish and linen chutes; ducts conveying hazardous exhausts; commercial kitchen exhaust hood and duct systems Throughout sty Throughout building Sprinklers not required f airpt control towers, open parking garages, Group F See code reference , , See Table as noted in code reference f specific buildings and areas where fire suppression systems are required Refer to codes and any other applicable regulations standards f other triggers and thresholds Table Created March 15, 2011 Page 5 of 7

6 ADDITIONS AND EXPANSIONS F existing commercial and multifamily residential buildings that undergo additions and expansions, sprinklers are required if both of the following criteria are met: Addition of new fire area > 50% of existing fire area (In other wds, the expansion increases the existing fire area by me than 50%) AND The resulting new total fire area > 5,000 sq. ft. Sprinklers are not required if neither criterion is met. Sprinklers are not required if only one criterion is met and not the other. [ : CFC 903.6, ] CHANGES OF OCCUPANCY CLASSIFICATION F existing commercial and multifamily residential buildings that undergo a change of occupancy classification, sprinklers are required if both of the following criteria are met: Change of occupancy classification results in a higher hazard categy based upon the table below (In other wds, the change of occupancy classification is from a lower hazard categy to a higher one) Relative Hazard 1 (Highest Hazard) (Lowest Hazard) 2012 International Existing Building Table Heights and Areas Hazard Categies Typical Uses Classifications H L A-1 A-2 A-3 A-4 I R-1 R-2 R-4 E F-1 S-1 M B F-2 S-2 A-5 R-3, R-3.x U Hazardous materials Labaties Theaters Restaurants Community halls, gyms, churches Indo spts arenas, skating rinks Institutional hospitals, prisons, commercial day care Hotels, motels Apartments Assisted living facilities Schools through 12 th grade Facty industrial moderate-hazard Stage moderate-hazard Retail stes Offices Facty industrial low-hazard (noncombustible) Stage low-hazard (noncombustible), parking garages Outdo activities stadiums Single-family residences and duplexes Accessy, misc. private garages, carpts, sheds Created March 15, 2011 Page 6 of 7

7 AND The new occupancy fire area > 5,000 sq. ft., the new occupancy meeting any of its sprinkler thresholds in the table f New Buildings above Sprinklers are not required if change of occupancy classification is made to an equal lower hazard categy. Sprinklers are not required if neither criterion is met. Sprinklers are not required if only one criterion is met and not the other. [ : CFC 903.6, ] Definitions Fire Area: The aggregate flo area enclosed and bounded by fire walls, fire barriers, exteri walls, hizontal assemblies of a building. Areas of the building not provided with surrounding walls shall be included in the fire area if such areas are included within the hizontal projection of the roof flo next above. ( 202) Fire Wall: A fire-resistance-rated wall having protected openings, which restricts the spread of fire and extends continuously from the foundation to through the roof, with sufficient structural stability under fire conditions to allow collapse of construction on either side without collapse of the wall. ( 202) Fire Barrier: A fire-resistance-rated wall assembly of materials designed to restrict the spread of fire in which continuity is maintained. ( 202) Exteri Wall: A wall, bearing nonbearing, that is used as an enclosing wall f a building, other than a fire wall, and that has a slope of 60 degrees greater with the hizontal plane. ( 202) Hizontal Assembly: A fire-resistance-rated flo roof assembly of materials designed to restrict the spread of fire in which continuity is maintained. ( 202) Created March 15, 2011 Page 7 of 7

Automatic Fire Sprinkler Systems New Construction Matrix

Automatic Fire Sprinkler Systems New Construction Matrix May 2013-2012 I-Codes For additional information contact: Fire Prevention Division Building Safety Division (785) 832-3174 (785) 832-7700 cking@lawrenceks.org