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CodefordesignofbuildingwatersupplyanddrainageGB50015-20032009200391409GB50015-20032010413.2.3A3.2.43.2.4A3.2.4C3.2.53.2.5A3.2.5B3.2.5C3.2.63.2.103.9.143.9.18A3.9.20A3.9.244.2.64.3.3A4.3.44.3.64.3.6A4.5.10A2007()([2007]125)()GB500152003[1994]21912345()61/121789()(258200041E-mailGB500152003@163com)()138GB5001520032003913213233243253263293210321435839139339439939123914392239243927426435436431343194594844885455420GBJ1588[1998]94()()GBJ15882/121()()(258200041)()110110212934510310422.1211drinkingwater212non-dinkingwater3/121213hourlyvariationcoefficient214maximumhourlywaterconsumption2.1.4Aaveragehourlywaterconsumption215backflowpollution215Aback-pressurebackflow215Bsiphonagebackflow2.16airgap217flood-levelrim217Abackflowpreventer217Bvacuumbreaker218servicepipe219inter-buildingpipe2110()inletpipe2111verticaldivisionzone4/1212112parallelwatersupply()2113serieswatersupply()2113Apressuresuperposedwatersupply2114exposedinstallation2115concealedinstallationembeddedinstallation2116manifold2117()2118()2119coefficientofline-expansion12120plumbingfixturefixture2121fixtureunit()()2122ominalflow2123designflow2124headloss2125pneumaticwatersupply5/1212126pointsofdistribution2127circulatingperiod2128backwash2129unassuredhourforaverageyear2130stabilizationtreatmentofwaterquality()2131cycleofconcentration2132self-priming2133waterscapefountain2134domesticsewage2135domesticwastewater2136domesticdrainage2137buildingdrainoutletpipe2138verticalpiperiserstack452139horizontalpipe6/121452140cleanout2141checkholecheckpipe2142trap2143waterseal2144HHpipeH2145ventpipevent2146stackvent2147specificventstack2148ventheaders2149mainventstack2150secondaryventstackassistantventstack2.1.51loopvent2.1.52fuxturevent2153yokevent7/1212153Aself-circulationventing2154indirectdrain2154Avacuumdrain2154Bsame-floordrain2155covereddepth2155Aburieddepth2156angleofturningflow2157depthratio2158greasetank2158Agreaseinterceptor2159coolingtank2160septictank2161reclaimedwater2162hospitalsewage8/1212163primarytreatment2164secondarytreatment2165timeofairchange2166rainfallintensity2167recurrenceinterval2168durationofrainfall2169inlettime2170timeofflow2171catchmentarea2172gravitybuildingdrainagesystern2173fullpressurestormsystem2.174gulleygutterinlet2175downspoutleader2.176hungpipe9/1212177roofdrain2178run-offcoefficient2179centralhotwatersupplysystem()2179Aalldayhotwatersupplysystem2179Bfixedtimehotwatersupplysystem2180localhotwatersupplysystem2181openhotwatersystem2182closedhotwatersupplysystem2183singlelinehotwatersystemtemperedwatersystem2.1.83Aheatpumphotwatersystem2.1.83Bwater-sourceheatpump2.1.83Cair-sourceheatpump2.1.84heatsource2.1.85heatmedium2.1.86wasteheat10/1212.1.86Asolarfraction2.1.86Bsolarirradiation2.1.86C()fueloil(gas)hotwaterheaters()()2187designheatconsumptionofmaximumhour2.1.87Adesignheatsupplyofmaximumhour2188reversedreturnhotwatersystern2189heatcarriercirculationsystem2189Ahotwatercirculationsystem2190downfeedsystem2191upfeedsystem2192returnpipe2193pipeportablewatersystem2194waterqualitytreatmentofscaleinhibitor&corrosion-delay11/1212.22.2.12.2.212/1212.2.313/12114/12115/12133.13111234567831231931331103141.0Lm2d3.0Lm2d3917391831123152.0Lm2d3.0Lm2d316GB50016GB500453.1.710153.1.816/1213.1.9319123.1.10311017/12118/121124060L343.1.113.1.1230L/50L/19/12130L/50L/8h2.51.5GBZ140L/60L/1h3.1.133.1.133.1.143.1.1420/121123453.1.14ACJ1643.1.14B3.1.14C21/1213.23.2.1GB57493.2.2GB/T189203.2.33.2.3A3.2.43.2.4A122.53.2.4B25mm150mm3.2.4C150mm3.2.51233.2.5A123.2.5B12122/1213.2.5C12.5()2343.2.5DA3.2.63.2.73.2.83.2.910m2m3.2.103.2.113.2.12123454.3.136()3.2.13()48h3.2.143.33.3.123/1213.3.1A3323.3.2A123.8.233.8.512h43.3.31233340.6MPa33510.45MPa20.35MPa()3335A0.35MPa336100m100m3.434124/1213.4.23433.44345123456()34612345347123434.81234525/1213.4.8A1233.4.8B12300mm150mm334913:13:10.4MPa0.3MPa2121.53453410123453411123412()3413126/121233414()34151234()34163417IC34181()234341934203421353513521mB352A27/1213530.15m0.70m354355()0.3m()35635735.835935100.5m35113.5123.5130.4m0.2m0.4m351435150.50m0.15m351628/1213517GBT11790351812()325mm4535190.6m3520GB5003835210.0020.0053522123()35233524352536361136136336436536.629/121236131931103361A361365366()361B1361361A2703430/1213.6.23.6.115%0.1MPa100mm363123123.6.41(3641)31/121365()32/1211230.51.20Ls43.6.633/121121.2Ls1.2Ls1.2Ls34/12135/1213611()()1()253015202()506030353()()70803540D361210.01MPa20.03MPa0.05MPa3613809036140.01MPa36153737112372136/1211)1520232373()1()20252()0.7m1.0m0.6m0.8m3()43.7.43min3.7.33.7.5150237320.8m3()3.7.63.7.71()329321323454()6()()73785min10min37/1213.83811QHQH2338.236238.338.43.8.4A3.8.5120.55MPa3()()1.2438/1213.8.61.0m/s1.2m/s0.3m0.80.1m1.53.5()3871223860.3m31.2ms43880.3m39/121389()3.8.10GB30963.8.11GB1007038121234538133.8.143814123.8.150.10m150mm0.20m200mm0.25m3.8.160.7m1.5m3.940/1213.9.13.9.2CJ2443.9.2A3.9.2FINA3.9.3GB57493.9.4GB57493.9.53.9.539639741/121398398A3993910115mh25mh23391112pH34pH391239131234539143915391542/1213.9.16391748h72h391839183918A()43/121391939203920A3.9.20B2/0.2m/s3.9.2139223.9.233.9.243.9.