Fire Protection Water Supply Requirements for … on‐site wells or Water Mutuals* as their source...

SANTACLARACOUNTYGOVERNMENTCENTER PHONE:(408)299‐576370WestHeddingStreet,EastWing,7thFloor http://firemarshal.sccgov.orgSanJose,CA95110‐1705 January27,2012

Theseguidelinesapplyto:

✓ Non‐residentialstructures

✓ Newconstructionandadditionsover500sq.ft.

✓ Propertieswithon‐sitewellsorWaterMutuals*astheirsourceoffireprotectionwatersupply

✓ UnincorporatedSantaClaraCounty

* Ifyourwatermutualcanprovidethefire‐flowanddurationrequiredbytheCountyFireCode,seeourbrochureentitledFireProtectionWaterRequirementsforPropertieswithMunicipalTypeWaterPurveyors

SantaClaraCounty

FireMarshal’sOffice

FireProtectionWaterSupplyRequirementsforPropertiesservedby

WaterMutualsorPrivateWells

WATERSTORAGE


TheFireDepartmentwillneedwaterincaseofafire.Youmaybeservedbyawatermutualthathaslimitedfire‐floworwaterquantityinstorage,oryoumaybegettingyourfireprotectionwatersupplyfromanon‐sitewell. Either way, you will need to provide for the required fire‐flow and delivery system necessary foreffectivefirefightingoperations.Thefollowinginformationwillhelpyoudetermineyourwaterrequirements.HazardClassification:Chooseyourhazardclassificationfromthetablebelow:

LIGHT MODERATE(NFPAOrdinaryGroup1or2)

HIGH(NFPAExtraHazardGroup1&2)

DEFINITIONOccupanciesorportionsofotheroccupancieswherethequantityand/orthecombustibilityofcontentsislowandfireswithrelativelylowratesofheatreleaseareexpected

Occupanciesorportionsofotheroccupancieswherethecombustibilityandquantityofcontentsismoderatetohigh,wherestockpilesofcontentswithmoderateratesofheatreleasedonotexceed12ft.inheightorstockpilesofcontentswithhighratesofheatreleasedonotexceed8ft.inheight

Occupanciesorportionsofotheroccupancieswherethequantityandcombustibilityofcontentsareveryhighanddust,lint,flammableorcombustibleliquidsorothermaterialsarepresent,introducingtheprobabilityofrapidlydevelopingfireswithhighratesofheatrelease

EXAMPLESOffices,kennels,restaurantseatingareas,auditoriums,etc.

Parkinggarages,restaurantserviceareas,agriculturalfacilities,barns,machineshops,mercantile,printshops,woodmachining,etc.

Sawmills,upholsteringwithplasticfoam,flammableliquidspraying,plasticsmanufacturing,etc.

NOTE:MoreexamplescanbefoundinNFPA13InstallationofSprinklerSystems.Buildingswithmultipleoccupancieswillbeconsideredonacase‐by‐casebasis. FinaldeterminationofhazardclassificationforpurposesofthisstandardshallbemadebytheFireMarshal’sOffice.

IsyourStructureIsolated?Waterrequirementsforisolatedstructuresarelowerbecausefireisnotlikelytojumptoanearbystructureorproperty.Anisolatedstructureisdefinedasasinglestructureorgroupofupto three structures located a minimum of 50 ft. from a property line or another structure or group ofstructures. Youwill need to determinewhether your project qualifies as isolated because this affects theamountofwateryoumustprovide.

Fire‐Flow is the amount ofwater available from the nearest standard hydrant for fire suppression. It isexpressedintermsofgallonsperminute(gpm)at20poundspersquareinch(psi)residualpressure.

UseTable II‐B.1,Table II‐B.2orTable II‐B.3 (below) todetermineyour required fire‐flow,using the squarefootageandtypeofconstructionofthelargestproposedstructureinyourproject.ITISIMPORTANTTONOTEthatthequantitiesofwaterinstoragelistedonthesetablesdonotincludewaterneededforthefiresprinklersystem.Sincetherearemanyvariablesindeterminingthesprinklersystemwatersupply,wecannottellyoutheadditionalamountrequired.Pleasecontactyourfiresprinklercontractorforanevaluationoffiresprinklerdemand.

FIRE‐FLOW


RURAL FIRE-FLOW TABLES

Revised 12/20/11

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Note1:SeeLightHazardClassificationasdefinedbyNFPA13Chapter5,adoptededitionNote2:Additionalhydrantsmaybeneededtomeetthespacingrequirements

Note1:SeeOrdinaryHazardGroups1and2asdefinedbyNFPA13Chapter5,adoptededitionNote2:Additionalhydrantsmaybeneededtomeetthespacingrequirements


StandardHydrant

Figure1

HYDRANTS

PRESSURE

Note1:SeeExtraHazardGroups1and2asdefinedbyNFPA13Chapter5,adoptededitionNote2:Additionalhydrantsmaybeneededtomeetthespacingrequirements

Standardhydrants(figure1)mustbelocatedwithin400ft.ofallexteriorportionsofyourproposedstructure(s).This,andthefire‐flowtables(above),willdeterminethenumberof hydrants required. Hydrants cannotbe installed less than40 ft. fromastructure to ensure safe fire ground operations, and they must be protected bybollardsifthereisanychanceofdamagebyvehiculartraffic,includingforklifts.

HydrantsmustbeinstalledincompliancewithNFPA24(adoptededition).Theymustalsobepaintedsafetyyellowandmarkedwithabluereflectivemarkerinthestreettoallowfirefighterstolocatethehydrantinthedark.Theymustbekeptvisibleandaccessibleatalltimes,andvegetationmustbekeptclearforaminimumof3feet.

Pressureforyoursystemmustbeprovidedbytankelevationoralistedfirepumpthatcansupplytherequiredfire‐flow(calculatedat20psi)tothehydrantsatthefurthestandhighestextentofthesystem.

Alternative1:Ifyourtankisprovidedwithadirecttankconnectionandcanbelocatedsuchthattheoutletiswithin400ft.(alonganapprovedpathoftravel)ofallexteriorportionsofthestructure(s)tobeprotected,thehydrantsystemandlistedfirepumpmaynotbeneeded(NOTE:alistedfirepumpmaystillberequiredforthefiresprinklersystem).ThenumberoftankoutletswillbedeterminedbyTablesII‐B.1,II‐B.2andII‐B.3,andthe tank(s) must comply with NFPA 22 (adopted edition), however paved access must be provided to alloutletsandtherearesomepracticallimitationsthatmaymakethisalternativeunsuitableforyourproject.


Revised 12/20/11

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PROCESS

Alternative2:Anagricultural, industrialordomesticwellandpumpsystemmaybeapproved in lieuofalistedfirepumpifaWellYieldandPumpTestReportfromanapprovedprofessionalshowsthatboththewellandpumpcanprovidetherequiredfire‐flowanddurationyeararound,evenduringdrought.Thepumpmustbeessentialtothebusiness,anditmustprovidetherequiredflowandpressureonaregularbasissoweknowitwillbekeptingoodworkingorderatalltimes.Thereareongoingtestinganddocumentationrequirements,and the installation must comply with our standard CFMO‐W6 Installation of Non‐Listed Pumps for FireProtectionWater. Thisalternativewillbeapprovedona case‐by‐casebasisby thisoffice,and if approved,shallbe recordedonthedeedto theproperty.NOTE:WellYieldandPumpTestReportandproceduresareunderdevelopment.ContactourFireProtectionEngineerfordetails.

LANDUSEPROCESS:TheFireMarshal’sOfficereviewsplanssubmittedtothePlanningOfficeand lists requirements forwatersupply,hydrantsandfire department access (on‐site driveways and roads) as part of yourconditionsofdevelopment. Atthattimeit is importantthatyouincludethefollowinginformationonyoursiteplansubmittedtothePlanningOffice:

a. Sourceofwatersupply(e.g.,watercompany)b. Totalsquarefootageofallproposedstructurescoveredbyyourapplicationc. TypeofconstructionpertheCaliforniaBuildingCoded. Proposeduseofallstructurese. Existingandproposedhydrants(includinghydranttype)androadways

BUILDINGPERMITPROCESS:Phase I:Our LandDevelopmentDeputywill reviewplans submitted to theBuilding Inspection Office to make sure everything required during thePlanningreviewisshownontheplans(e.g.,waterandroads).IfsomethingismissingitwillbelistedontheletteryouwillreceivefromthePlanningOffice.

Phase II: Your building permit submittal will also be reviewed by ourConstructionDeputyorFireProtectionEngineerforcompliancewiththeFireandBuildingCodes.Wewillneedyoutoprovidethelocationofanyon‐sitehydrantsyouwillbeinstallingalongwithfiredepartmentaccessroutes.Ourplan check comments will be issued together with those of the Plan Check Engineer from the BuildingInspectionOffice. Corrections to the building permit plans ALWAYS require a resubmittal to the BuildingInspectionOffice.PleasedonotsubmitrevisionsdirectlytotheFireMarshal’sOffice.FIREMARSHALPERMITPROCESS:Ifyouarerequiredtoinstallon‐sitehydrantsorafirepumptosupplyfireprotectionwater,youmustobtainaFireMarshalPermitbeforeinstallation.Thesubmittalshouldbemade directly to the FireMarshal’s Office. IMPORTANT: your systemmust be installed and approvedbeforeyoucan startwith combustible construction! More informationon submittals canbe foundonourwebsiteathttp://firemarshal.sccgov.orgunder“Construction”.

LET US HELP YOU!The Fire Marshal’s Office iscommitted to providing asmuchassistanceaswecantomake your project move asquickly and easily as possiblethroughtheapprovalprocess.Weencourageyoutocontactour Land DevelopmentDeputy at (408) 299‐5763 orthrough our website athttp://firemarshal.sccgov.org(seeAboutUs)ifyouhaveanyquestionsorwouldliketosetupanappointmenttodiscussyour project. We are alsoavailable for drop‐inconsultation or project sign‐off at the public countereveryWednesdayandFridayfrom8am‐12pmand1pm‐5pm.

Judy Saunders � 1/18/12 2:49 PMComment [1]: Pump test procedures under construction

Judy Saunders � 1/18/12 2:53 PMComment [2]: Cannot enforce until we revise CFC amendments, scheduled for February, 2011


TOAVOIDDELAY:Inorderforustoapproveyourbuildingpermit,youmustshowhydrantlocationsaswellasadjacentpavedroadwaysonyoursiteplan.Installation details will be required when your contractor submits for a FireMarshalpermitforthehydrantsysteminstallation.

Thisbrochurewasdesignedtoincludethebasicrequirementsanddoesnotapplytoallsituationsorprojects.SeethecompleteStandardCFMO‐W2andotherassociatedstandardslistedbelow.ASSOCIATEDSTANDARDS:

CFMO‐W2 Installation of Private Fire Hydrants & Water Supply for Other Than One‐and Two‐FamilyDwellingsandAssociatedStructures(*availableonourwebsite)

CFMO‐W3Markingof FireDepartmentConnections, Post IndicatorValves, Fire Sprinkler ControlValves,andPrivateHydrants(*availableonourwebsite)

CFMO‐W6 Installation of Non‐Listed Pumps for Fire ProtectionWater (NOTE: this standard is currentlyunderdevelopment‐seeourFireProtectionEngineerfordetails)

CFMO‐C1 Bollards for Private Fire Protection Equipment, Generators and Fuel Tanks (*available on ourwebsite)

NFPA 20 Installation of Stationary Pumps for Fire Protection (current adopted edition with any Stateamendments)

NFPA22StandardforWaterTanksforPrivateFireProtection

NFPA24 InstallationofPrivateFireServiceMainsandtheirAppurtenances(currentadoptededitionwithStateamendments)

*Thesestandardscanbedownloadedfromourwebsiteathttp://firemarshal.sccgov.org.

Fire Protection Water Supply Requirements for … on‐site wells or Water Mutuals* as their source...

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