课件综合文件11 5 2015

SUPPLYANDINSTALLATIONOFFIRESERVICESWORKSNO.83HOIBUNROAD,KWUNTONG,KOWLOON223-231WAIYIPSTREET, SUITE1204-06(MAINRECEPTION)8CONNAUGHT TYSURVEYORLANGDON&SEAH LANDMARKEAST100HOWMINGSTREETINTERIORDESIGNERPDMIN+ERNATIONAL18WHITFIELDROADCAUSEWAYBAY,THOMASANDERSON&PARTNERSCONSULTINGENGINEERS ROOM1602/04,16/F,LEIGHTONCENTRE77LEIGHTONROADSETNO.Item11:1:1:2-1:22:CO2FIRE2:2:2:TEST2:2:33:3:3:DESIGNOF3:1-3:3:3:3-3:3:3:3:44:4:4:4:HOSE4:1-4:4:4:5ItemItem66:6:6:CALLPOINTS-BREAKGLASS6:2-6:3-6:7-6:8-6:9-6:6:6: 6:12-6:13-6:6:6:6:6:6:6:6:6:17-7DRENCHERSYSTEM8SF6GASLEAKAGEALARMSYSTEMItem 9:9:1-9:PIPE9:DRAIN&9:PIPE9:9:METHODSOF9:9:4-9:PIPE9:9:9:9:9:9:9:9:11:11:11:11:11:2-11:11:11:11:11:11:11:11:Item 12: 12: 12:1- 12:2- TESTLOG12: 12: STOBEDBEFOREHAND-12: 12: 12: 12:8- 12:18- - S1:1- S2:1- S3: S4:ThissectionofthespecificationreferstotheextentofworkwhichgenerallydefinestheworkstobecarriedoutunderthisSub-Contractinbroaddetailsonly,andthosetobecarriedoutbyotherSub-Contractor.TheSub-ContractworksshallfullycomplywiththelatestissuesoreditionsofthefollowingStatutoryObligationsandRegulation:-FireService(InstallationsandEquipment)Regulations,FireServiceOrdinance,Chapter95,Lawsof.CodesofPracticeforMinimumFireServiceInstallationsandEquipmentandInspectionandTestingofInstallationandEquipmentpublishedbyRequirementsandFSDCircularLettersoftheFireServiceDepartment,HongRulesoftheFireOffices'CommitteeandFireOffices'CommitteeofIreland,UnitedKingdom,forAutomaticFireAlarmInstallationsfortheProtectionofRulesoftheLossPreventionCouncil,UnitedKingdom,forAutomaticSprinklerInstallations.BritishStandardsandCodesofPracticeissuedbytheBritishStandardsInstitution,orapprovedequivalent.TheCodesandStandardsissuedbytheNationalFireProtectionAssociationoftheU.S.A.("N.F.P.A.").RegulationsonsafetybytheLabourTheElectricCo../CLP OfficeoftheWaCodeofPracticeforEnergyEfficiencyofBuildingServicesInstallationsissuedbytheElectricalandMechanicalServicesDepartment.CodeofPracticeforFireSafetyinBuilding2011publishedbyBuildingsDepartment,.AllotherhavingjurisdictionovertheinstallationintheHongKongSpecialAdministrationRegion.Thetenderer,bythefactofsubmittinghistenderprice,shallberegardedasguaranteeingtheequipmentselectedasbeingcapableofthecapacityandperformanceasrequiredbythisSpecificationandthe panyingtenderdrawings.ThisSpecificationshallbereadonjunctionwiththe panyingDrawingswhichformpartofthisSpecification.ThisSub-Contractconsistsofsupply,installation,testingandcommissioningofFireServicesInstallationforNewFitOutWorkforNewOfficesforManulifeOperationsinThisSub-Contractorshallcarryoutallnecessaryworksashereundergenerallydescribed,indicatedontheDrawings,and/orcalledforintheSpecificationsaswellasanyunspecified,undesignatedornon-indicatedworkwhicharenecessaryinthecourseoftheprojecttocompletetheinstallationasaworkingunit.TheentireinstallationshallmeetLEEDrequirementsandthesub-contractorshallfullycomplywithallofthecommitmentsspecifiedinthe“LEEDCommercialInterior2009Specification”ofthisThisspecificationshallbesubjecttotheGeneralConditionsofContractandshallbereadinconjunctionwiththe panyingdrawingswhichformpartofthisProvidefulltimesiteforemenonsiteasProvidecompetentEngineerstoattendmeetings,supervisesubmissions,installation,testingandcommissioning,maintenanceoftheinstallationthroughouttheinstallationandLiabilityPeriod.RemoverubbishfromsitefromtimetoCleanuptheareawhereFireServicesworkshavebeentakenShopdrawings,builder'sworkdrawingsandasfitteddrawingsand.Carryoutallnecessarysubmissiontoutilitiesofficesandcompanies(suchasW.A.andF.S.D.),submissionfeesshallbeluded,butnotludedeposit/Thecosttoappointtheexistingbuilding‘sF.S.maintenanceContactortocarryoutthefollowingworksandthecostshallbedeemedtobeludedintheSub-ContractSum:-DraindownandrefilltheF.S.ConnectionworksbetweennewandexistingpiRe-programme/Fireisolationandworksrelatedto andAFANewandmodificationworksrelatedtoandAFAIssueFS251uponcompletionofworkandcompletionofDLP12monthsmaintenanceandguaranteeservices&emergencycallservicesfornewlypartofsystem. ExtentofTheworkstobecarriedoutunderthisSub-ContractshallludethewholeofmaterialsandlabournecessaryforthecompleteFireServiceInstallationasshownontheDrawingsand/orcalledforinthespecifications,andwithoutabrogatingthemoreextensivedetailemplifiedelsewhereintheSpecificationsandDrawings.Beforesubmittingthetender,theSub-Contractorisadvisedtovisitthesiteandmakehimselfthoroughlyacquaintedwiththelocationandallaspects(notonlythemodificationwork)whichmightaffecthistender.TheSub-Contractorwillberesponsiblefortakingallmeasurementsrequiredenablinghimtocompletehistender.Noclaimwillbeconsideredonthegroundsofignoranceoftheconditionsunderwhichtheworkistobecarriedout.ThisSub-ContractorshallcarryoutallFSinstallationworksasspecifiedbelow:-FireHydrant/HoseReel(FH/HR)Supply,installationandcommissioningofhosereelsetludingallassociatedaccessoriesasindicatedonnsludingdisposalofalldisusedmaterialsfromsite.Relocationoftheexistinghosereelsetludinghosereels,pipeworkandfittingandassociatedaccessoriesasshownonthedrawings.DrainandrefilltheFH/HRAllexistingsprinklersystemfornon-renovationareaaretobeSupply,installationandtesting&commissioningofthenewsprinklerheadsc/wpipework,fittings,andassociatedaccessoriesetc.asshownonSupply,installationandtesting&commissioningofpre-actionsprinklersystemc/wcontrolvalve,sprinklerheads,andassociatedaccessoriesetc.asshownondrawings.Diversion/dismantlingoftheexistingsprinklersystemludingsprinklerheads,pipeworkandfittingandassociatedaccessoriesasshownonthedrawings.Drainandrefillthesprinklersystem(tobedonebytheexistingF.S.maintenancecontractor).Carryouthydraulictestfornewsprinklerpipeworkbeforeconnectionofsamepipeworktosprinklerdistributionpipe.AllexistingandAFAsystemfornon-renovationareashallbeTakedown,reinstateandcommissioningofAutomaticandFireAlarmSystemludingsmoke/heatdetectors,breakglassunits,alarmbell,visualfirealarmunitsandallelectricalworks,etc.asindicatedandDiversion/dismantlingoftheexisting firealarmsystemludingdetectors,breakglassunit,firealarmbells,flashinglights,wiringandconduitsandallassociatedaccessoriesfortherenovationareaAllcostsurredforthenecessarymodification/altion/recementofexistingF.S.installations(ludingequipment)inordertocopewiththenewF.S.installationshalldeemedtobeludedintheSub-Contract7.Allcostsforre-programmeofexistingaddressabletypeAFAsystem(tobedonebytheexistingF.S.maintenancecontractor)shallbeludedintheSub-ContractSum.SupplyandbuiltinallG.I.sleevesforpipespassingthroughfireratedpartitions,structuralwalls,beamsandslabsetc.asindicatedludingFRPbackfillingbetweenpipeandsleeves.Paintingofallexposedfireservicespipework,conduits,trunkingandequipmentwithinrenovationarea.Carryoutallnecessaryutilitysubmissions(i.e.314A,251)andtimelyobtainalls.CarryoutcommissioningandnecessarytestingofallequipmentasrequestedbytheFireServicesDepartment,WaterAuthorityandtheConsultingEngineer&attendantforFSDinspection&WAinspection.TheSub-ContractorshallberesponsiblefortheliaisonwiththeexistingFireServicesMaintenanceContractorinrelationtothetemporarysuspensionofF.S.systemswhichmayaffecttheareasotherthanrenovationareas.TheSub-ContractorshallthereforeberemindedthattheexistingF.S.installationfornon-renovationareashallbemaintainedingoodworkingorderthroughouttheentireSub-Contractperiod.AnynecessarytemporaryworkludingdiversionofexistinginstallationshallbedeemedtobeludedintheSub-ContractSum. Duetolimitedstoragespaceavailable,theSub-Contractormustmakehisownarrangementtoensurethatmaterialsdeliveredtositearereadyforinstallation.Insomecases,thismayinvolvedoublehandlingandtheSub-Contractorshallberesponsibleforsuchadditionalexpenses.StoragespaceshallberestrictedtotheareaasdirectedbytheProprietor.Sub-Contractorisnotallowedtostoretheirmaterialswherevertheylike. TheSub-Contractorshallavoiddisturbingthetenantsareas.Ifworkhastobecarriedoutinsidethetenant’sarea,adequateprotectionofequipment,furnitureorotherpropertymustbemadebeforeworkistobecarriedout.Properdustscreen/boardmustbedandinstalledforprotectingtheequipmenttothesatisfactionoftheProprietorandsubsequentlydismantledandremovedfromtheareaafterworkiscompleted.Propercleaningmustbecarriedoutcontinuouslyduringtheinstallation.ThemanagementofficehastherighttostopworkatanytimeifitisconsideredthattheSub-Contractor’sworkmayaffectthetenants.Overtime,overnightand/orworkingduringholidaysmayberequiredinordertocarryoutthenecessarymodificationworkwhichundernocircumstancesshallcausedisruptiontothenormaloperationofthebuilding.TheSub-Contractorshallprovidesufficientworkmen/supervisor/foremantoensurethattheworkiscarriedouttothesatisfactionoftheProprietor/ConsultingEngineers.ShouldtheSub-Contractorconsiderthatitmight enecessarytocauseovertimeworkandnightworkinordertocompletetheWorkstotherestrictionsnotlimitedtoaccesstotheSiteandworkinghoursetc.bytheDateofCompletion,hemustallowforsuchacontingencyinhisTenderPrice.Noclaimforanyextrainthisconnectionwillbeconsidered.TheSub-ContractorshallsubmitapplicationstotheArchitectandConsultingEngineersforapprovaltoworkovertime.Noguaranteethatapprovalinthisrespectwillbegiven. TheSub-Contractorisalsoresponsibleforthedisposalofdismantledfireservicesequipmentandremovedfromsitefromtimetotime.SuchcostsshallbeallowedforintheTenderSum. TheSub-ContractorshallliaisewiththeernmentforanysubmissionsrequiredinthisProject.TheSub-Contractorshallallowinthistenderforallcosturredforthenecessarysubmissiontothe.SECTION2ThissectionofthespecificationsetsouttherequirementsfortheinstallationofportablefireextinguishersandotherhandappliancesofthetypeapprovedbytheFireServicesDepartment,.CO2FIRESupplyandinstallallCO2fireextinguisherswhereindicatedonFireextinguishersshallhaveacapacityof4.5/5.0kg,CO2F.E.andshallbeofseamless,rivetless,copperconstructioncompletewithcharge.WallmountingbracketsshallbedandfixedbytheSub-Contractor.AIREXPELLEDWATERFIRESupplyandinstallallairexpelledwaterfireextinguishersasindicatedondrawings.Extinguishersshallhaveacapacityof9litreswall-mountingbracketsshallbedandfixedbytheSub-Contractor.FireblanketsandsandbucketsshallconformtotherequirementsoftheFSD.Bucketsshallbeofnotlessthan10litrescapacityandshallbegalvanizedsteelandpaintedred.FireblanketsshallcomplywithBS7944:1999andshallbeofFSDapprovedheavydutyandreusabletype.TESTProvidetheFireServices No.(FS251)forallpotablefireservicesequipmentandsubmittoFSDforfireapplication.PARTICULAR-THISTheSub-Contractorshallsupplyandinstalltheportablefireextinguisherswhereindicatedandspecifiedonthedrawings.TheworkshallbecarriedoutbyacontractorwiththeFSDintheernmentofHongKonginaccordancewiththeFireServices(InstallationContractors)Regulations,FireServicesOrdinance,Chapter95,Lawsof.ThissectionoftheSpecificationsetsoutgenerallytherequirementsforthesupply,installation,commissioningandtestingtoprovideanautomaticfiresprinklersystemtotheareasshownonthedrawings,allinaccordancewithrulesandregulationsofthefollowing:LossPreventionCouncilRulesonFireSprinklerCodesofPractice(Amended)FireServicesDepartment,AnyotherauthorityhavingjurisdictionovertheThefollowingworkshallbecarriedoutbytheSub-Supply,installation,commissioningandmodificationofsprinklerinstallationforasshownondrawing.Supply,installation,commissioningandtestingofpre-actionsprinklerinstallationforasshownondrawing.Diversion/dismantlingoftheexistingsprinklerheadsludingpipeworkforareaasshownondrawingsorspecified.Costfordrainrefillthesystemandinter-connectionbetweennewandexistingpipeworkbytheexistingF.S.maintenancecontractorasperspecifiedonsection1.03itemBeforecommencinganyworkthesuccessfultenderershallsubmitworkingdrawingstotheArchitect/ConsultingEngineerforapproval.DESIGNOFAllpiandotherpartsofthesystemshallbecedsoasnottointerferewiththefunctioningofanyothernt.Everycareshallbetakentopreventairpockets.Aircocksshallbefittedwherenecessary,inpositionsconvenientforoperationandconnectedtopiarrangedtoconveyanydischargedwatertotheoutsideofthebuilding.Careshallbetakentoavoidlowsectionswhi aytendtocollectsiltandthelike.Lowsectionsshallbeprovidedwithdra ockssecurelypadlocked losedposition.DESIGNOFSYSTEMThesystemshallbeofthemosteconomicaldesignconsistentwithefficientfireprotectionandshallconformtoallrequirementsoftheindicatedlauseThesystemshalloperateautomatically.Immediayuponoperationofthesystem,audiblealarmsinareasservedbythesprinklershallstart.VisualindicationshallappearontheFireServiceSupervisorypanelindicatingthatsprinklersinaparticularzonehaveoperation.NecessarypressureregulatingsetsshallbeprovidedtostabilisethesystempressureatallpointstotherequirementsofFireServicesDepartment.Allpishallbecompletedwithhangers,jointsandtheThepipesshallbesizedasindicatedbutthepipe-runasshownarediagr ticandtheSub-Contractorshallallowforanydiversiontosuitthesiteconditions.Sprinklerheadsshallbeglassbulbtypeofappropriatetemperatureratingandofapatternapprovedbytheconcernedandshallbesuitablyarrangedondistributingpipes.HeadsandflushtesshallbestandardbronzefinishonotherfinishcolourtobeselectedbytheArchitect.HeadsshallbespacedtosuittheConcealedtypesprinklerheadshallbeinquickresponsetypeandcomplywithrequirementofFSDcircularletterno.1/2001.Whereheadsareliabletobeaccidentallydamagedtheyshallbeprotectedbywiremeshguards.Headstobeinstalledonfalseceilingshallbecompletewithstainlesssteelorchrome-tedcirculartecoveringtheceilingopeningsfromwhichthesprinklersticksout.Theteshallbecapableofbeingremovedandre-instatedwiththesprinklerhead.Allheadsshallbeinstalledinaneatlineararrangementtoavoidlightfittings,ducts,TheSub-Contractormustguaranteetoprovidenofewerheadsthanrequiredby.Providedrainsfromsprinklerheadsandrunpipeworktothenearestconspicuouspositionneardrainagesump.Pre-actionsystemshallbedandinstalledwherespecified.Pre-actionsystemcanbetinstallationsorsubsidiaryextensions.Therearetwotypesofpre-actionsystemsasfollows.Unlessotherwisespecified,Type2systemshallbeusedforpre-actionsystem:-Type1system-thesystemservestopreventaprematuredischargeofwaterfrompipeworkorsprinklersthathavesufferedmechanicaldamage.Thewaterwillnormallyflowintothepre-actionpipeworkwhenboththesprinklerisopenedandthefiredetectionsystemisoperated.Sprinklerscanbeinstalledintheuprightorpendentposition;Type2system-thesystemfacilitatesanearlydischargeofwaterfromadrypipeinstallationbyopeningtheinstallationmaontrolvalve,thusfillingtheinstallationpipeworkwithwater,uponoperationofafiredetectionsystem.Consequently,thewatershallfillthepre-actionsystempipeworkuponoperationofafiredetectionsystembeforethesprinklerisoperated.Sprinklershallbeinstalledintheuprightposition.Thepre-actionsprinklerinstallationpipeworkshallbenormallychargedwithcompressedairunderpressureandmonitoredtogiveawarningindicationonreductionoftheairpressure.Compleossofairpressureshallinitiatethevisualindicationandaudiblealarmforafirealarm.Thenumberofsprinklersinapre-actionsystemshallnotexceedtheInalight-hazardinstallation:500perInanordinary-hazardinstallation:1000perInahigh-hazardinstallation:1000perThepre-actionsystemcontrolpanelshallorporatethenecessaryrelays,timers,keytypesswitches,alarmandtroublelightsessentialtotheoperationofthesystem.Thecontrolpanelshallemployprintedcircuitboardsforthecomponentsandshallbecompleyfactory-wiredandreadyforconnectiononSite.Thecapacityofthestand-bybatterypowersupplyshallbecapableofoperatingthepre-actionsystemforatleast72hours.Atofthe72-hourstand-byperiod,thestand-bypowersupplyshallstillbecapableofoperatingthepre-actioncontrolpanelandsolenoidvalveoractuatortoreleasethepre-actionalarmvalve;Thepre-actioncontrolpanelshallinitiateoperationofthepre-actionalarmvalveimmediayintheeventofafirealarmsystemfault(ludingafailureoftheprimaryandstand-bypowers)whichmayresultinfailuretoexecutetheappropriateactionsintheeventoffire.Thepre-actioncontrolpanelrelaysandcircuitryoperatingthepre-actionalarmvalvesolenoidvalvesoractuatormechanismsshallbeduplicatedandwiredsuchthatnosinglefaultorfailureshallrendertheinstallationinoperable.Monitoringdevicesshallbedandinstalledtogive:-Indicationthatanystopvalvesdown-streamoftheinstallationcontrolvalvesetarefullyopen;Audibleandvisualwarningsatthepre-actioncontrolpanelthatanymonitoredstopvalveisnotfullyopen;Audibleandvisualwarningsatthepre-actioncontrolpanelthatthecovertoaconditionindicatorswitchhasbeenremoved;Audibleandvisualwarningsatthepre-actioncontrolpanelofshortcircuitordisconnectionoftheleadsofanysolenoidvalveoractuatorwhichisenergizedtoopen;Audibleandvisualwarningsatthepre-actioncontrolpanelofshortcircuitordisconnectionoftheprimarypowersupply,thesecondarypowersupplyoranybatterychargerassociatedwiththeoperationofthepre-actionsystem.Thefiredetectionsystemusedtoactivateapre-actionsprinklersystemshallcomplywithLPCRulesforAFAInstallationswhereappropriateandthefollowing:-Eachroomorcompartmentprotectedbysprinklersshallhavesufficientfiredetectorstoinitiatereleaseofthepre-actioninstallationwithouttheoperationofanydetectorsexternaltotheroomorcompartmentorlocatedwithinFiredetectionsystemsemployingcoidenceconnection(requiringaresponsefromtwodetectorstoinitiateoperationofthepre-actionalarmvalve)maybeusedwithType1andType2pre-actioninstallations.Considerationshallbegiventoactuatethepre-actionalarmvalveonoperationofasinglefiredetectorwherefast-develofiresmayoccur;Anytwodetectorsofagroupofdetectorsthatmayinitiatetheoperationofthepre-actionalarmvalveshallbeseparayconnectedtotwiringcircuits(coidenceconnection);Considerationshallbegiventothenatureoftheoccupancy,buildingheight,sprinklerthermalsensitivity,airmovementandthe mendationsoftheLPCRulesforAFAInstallationsandtheLPCRulesforSprinklerInstallations.TheSub-Contractorshallsupplysampleswhenrequestedofsprinklerheadsandescutcheontesludingthevarietiesoffinishesavailable.AllsamplesaretobeavailableonsiteandmaybereturnableatthecompletionoftheSub-Contract.TheSub-Contractorshallcarriedouthydraulictestforpipeworkwithatleast1.5timessystempressureor100p.s.i.andsubmitreporttotheArchitect/EngineersforAllexposedpipeworkandfittingshallbeproperlytreatedandpaintedwithoneundercoatingEtchPrimerpaintandtwofinishingcoating.PARTICULAR-THISTheexistingautomaticsprinklersystemshallcomprisecontrolvalvesets,sprinklerinlets,sprinklerheads,flowswitches,pressureswitches,pipework,valves,sprinklerinletandetc.shallberetained.Newsprinklerheadsshallbeprovidedtocoverallrenovatedareaasshownandspecifiedondrawings.TheclassificationoftheoccupanciesshallbeOrdinaryHazardGroup3.Newpre-actionsystemshallbeprovidedtocover20/Fcommunicationsroomasshownandspecifiedondrawings.Costfordrainrefillthesystemandinter-connectionbetweennewandexistingpipeworkcarriedoutbynamedSub-Contractor.Allnecessaryequipment,components,materials,testingdevices,testingfacilities,controls,signs,notices,etcassorequiredaccordingtoLPCorFOCsprinklerrulesandFSDrequirementshallbefullyprovidedtocompleteentiresprinklersystem.Allthecostshallbeenludedinthesub-contract.Pendent/uprightglassbulbtypesprinklerheadsshallbeusedforallsprinklerprotectionareas(nominalsize15mm)unlessotherwisespecifiedandmustbeofFireServicesDepartmentapprovedtypeandoperatedat68oC.Concealedandquickresponsetypesprinklerheadsshallbeusedforallexposedareaasshownonthedrawings.Thecolourofceilingte(whiteorchrome)matchwithcolouroffalseceilingaspossibleandshallbeselectedbyArchitect.Drytypesprinklerheadsshallbeusedfor20/FcommunicationsroomunlessotherwisespecifiedandmustbeofFireServicesDepartmentapprovedtype.PipeworksforsprinklerrisersshallbeG.I.pipemediumgradetoB.S.1387/BSEN10255:2004.Sprinklerheadsshallbeprovidedinsidefalseceilingwherethespacweenceilingslabandfalseceilingexceeding800mmdepth.Sprinklerheadsshallbeprovidedunderair-conditioningducts,cabletrayandbusbarasshown.Sprinklerheadatorbelow2000mmfromfloorlevelshallbeinstalledwithmetalguardformechanicalprotection.ThissectionoftheSpecificationsetsoutgenerallytherequirementsforthesupply,installation,commissioningandtestingtoprovideahydrantandhosereelsystem,whichshallformpartoftheSub-Contractworksasshownonthedrawings.TheFireHydrantandHosereelSystemshallbeinstalledfortheentiredevelopmentinaccordancewiththe"CodesofPracticeforMinimumFireServiceInstallationandEquipmentandInspectionandTestingofInstallationandEquipment"publishedbyHongKongernment.ThehydrantandhosereelsystemshallgeneralludethefollowingSupply,installationandcommissioningofnewhosereelsetsconnectedfromexistingFH/HRsystemasshownandspecified.Relocationoftheexistinghosereelsetc/wassociatedpipeworks,fittings,nozzleboxes,asshownondrawingsorspecified.Costfordrainandrefillsystemandinter-connectionworksbetweennewandexistingpipeworkcarriedoutbytheexistingF.S.maintenanceContractorasspecifiedonsection1.03.1itemh.Beforecommencinganywork,thesuccessfultenderershallsubmitworkingdrawingstotheArchitect/ConsultingEngineerforapproval.AllpishallbeasspecifiedinSection9andshallbecompletewithhangers,jointsandthelike.HOSESupplyandinstallallhosereelsasshownonthedrawings.TheSub-ContractorshallresponsibletoproposethecorrecttypeofhosereeltosuittheactualbuildingconditiontothesatisfactionoftheArchitect.Thedesignofthehosereelshallbesuchthatthetubingispermanentlyconnected,viapipesinthedrumofthehosereelandsuchstaffingboxesasmaybenecessary,tothesupplymainorthehydrantsupplymain.Theinternalboreofthehosereeltubingshallbenotlessthan19mm,suchtubingshallhaveaburstingpressureofnotlessthan2700kPaandshallnotbeporousnorexhibitanysignofpercolationunderpressureupto2,000kPa. HOSEREELThetubingofeveryhosereelshallnotexceed30metresinlengthandbecapableofbeingwoundroundadrumofnotlessthan150mmindiameterandledaroundsharpobstructionswithoutkinking.Whenfittedwithhosereelnozzle,thetubingshallbecapableofprojectingajetnotlessthan6metresinlength.Thehosereelnozzleshallbebronzemadeandhavea4.5mmorificeandbefittedwithasimpletwo-wayvalvetoopenorshutoffthejet.Thevalveshallnotbespring-loaded.ThehosereelcontrolvalveshallbeofgatevalvetypeapprovedbytheWaterAuthority.Suchvalveshallbeclosedbyturningthehand-wheelinaclockwisedirection.Asimpletwo-wayballvalveapprovedbytheHongKongWaterAuthoritymaybeusedasternativetoagatevalve.Hosereeldrumsshallbepaintedinred.Thehosereelassemblyshallberobustinconstructionandbecapableofwithstandingnormalimpactandstressduringoperation.Risingmainsandassociatedpipeworkusedforthehosereelsshallbenotlessthan40mmnominalboreandpipesfeedingindividualhosereelshallnotbelessthan25mmnominalAhosereelshallbesoinstalledthatitscontrolvalveandnozzle,whichshouldbesituatedadjacenttoeachother,areatapositionaboveandnotmorethan1350mmfromthefinishedfloorlevel.Forarecessedtypehosereel,suchcontrolvalveandnozzlemayberecessedtoadiscernibleandaccessiblepositionofnotmorethan500mmfromthesurfaceofthewall.Thehosereelshouldnormallybelocatedinoccupiedunits/areastoenabletheoccupantsofthebuildingtoattachafire.However,aseofabuildinghavinganumberofsmallunits,hosereelsmaybelocatedincommonareasimmediayoutsidetheoccupiedunits/areasonthatfloortoprovidecoverage.Anyhosereelsitedonanyescaperoutemaybeoffixedtypeorswingingcradletypeandrecessedintothewall.Ifthehosereeliscarriedonaswingingcradle,itshouldbeconstructedinsuchawaythatwhennotinusetheouterfaceofthereelisflushwiththewallandwhenrequiredforusethecradlemayswingoutlyintothecorridororpassage.Ifthehosereelisofafixedtype,suitableguidering(s)shallbeinstalledtopermiteasywithdrawalofthehosereeltubing.Ifhosereelsarelocatedinrecessestowhichdoorsarefitted,suchdoorsshallbehingedsothatwhentheyareopened,theyshallnotcauseobstructiontoanymeansofescapenortotheoperationofthehosereelsnortothehosebeingrunoutineitherdirections.Thedoorsshallbearthewords"FIREHOSEREEL",letteringofwhichshallbeofatleast50mmhigh.Door