[電氣預埋規范]電氣預埋管圖集[電氣預埋規范]電氣預埋管圖集電氣埋管施工工藝細則Electricalconduitconstructiontechnologyrules1．嚴禁使用電焊、氣焊割管。Strictlyprohibitedinusinggasandelectricweldingcuttingconduit.2．嚴禁將腳手架作為電纜管使用。Strictlyprohibitedinusingthefolderaselectricalconduit.3.銹蝕嚴重的鋼管不得使用；鋼管彎制或安裝前應將管口及管內雜物清掃干凈，并除去毛刺。Existseriouscorrosionconduitisnotallowedused;themouseoftheconduitastheinnerpartthedepismustberemovedbeforebendingorinstallation3．電纜管切割采用手工鋸或切割機進行切割，并保證切割面平整且不傾斜；切割后必須立即將管口毛刺打磨干凈，并打磨管口成喇叭型。Cuttingfortheconduitadoptinginmanualsawormachine,andensurethecuttingsurfacesmoothandnottilt;burringaftercuttingmustbeimmediately,andpolishedtypenozzleintohorn.4．電纜管的彎曲半徑R≥10D（電纜管外徑）；彎曲角度≥90°，并盡可能減少90°彎頭；電纜管彎制不得出現明顯的凹癟、裂紋、折皺，鋼管彎扁程度≤0.1D（電纜管外徑）。BendingradiusR≥10D(hereDisconduitoutdiameter);BendingAngle≥90°,andaslessaspossiblethe90°elbow;conduitbendingcannotappearobviousconcave,crack,wrinkle,flatsteeltubebendingflatlevel≤0.1D(hereDisconduitoutdiameter).6．電纜管安裝時，每根電纜管彎頭數量不得超過3個，90°彎頭不得超過2個（埋管長度≥12米，不得多于2個彎頭；12米≥埋管長度≥8米，不得多于3個彎頭；直管埋設不得大于30米）超過上述標準須增加轉接盒。Wheninstallationconduit,theamountofeachconduitelbowshallnotexceed3,elbowwith90°shallnotbemorethan2；theconduitlength≥12m,shallnotbemorethantwoelbow;Thelengthoftheconduitthatchangedbetween8mand12m,shallnotbemorethanthreeelbow;straightshallnotbemorethan30meters；Ifexceedthestandardmorethanthestandardmustincreasethetransferbox.7．電纜管連接不得對接焊，必須采用短套管；套管長度≥50mm；whenconduitconnectionashortsocketmustbeused，andnobuttwelding（exceptWhencoupling,thereshouldn’tgapbetweenthetwoconduitandthecounterpartmalocclusionislessthan2mm,counterpartseamshouldbeinthemiddleofthesocket,andthebothsidesalongthecircumferentialweldingsealing,partialcannotweldingmustuseblacktapewindingsealingwithfastenedironwire;9．電纜管不得在外壁直接點焊加固，加固采用鐵絲綁扎或煨制鋼筋成環鉤加固、切割20~30mm套管套至固定點進行，固定間距：φ15~φ20為1.0~1.5米，φ25~φ32為1.5~2.0米，φ40~φ50為2.0~2.5米，φ65以上不大于3米。Potweldingreinforcecan’tbeallowedoutsidethewallofconduitdirectly,aavailablesteelbarwillbemadeintoaringhook,andthencutting20~30mmoneendfastentoconduitanotheronestablepointorironwirecolligationfixedspacing:φ15mm~20mmis1.0~1.0m,from25mmto32mmis1.5~1.5meters,40mm~50mmis2.0~2.5meters,exceed65mmnotmorethan3meters10．電纜管與接線盒的連接可采用焊接和絲扣連接，：電纜管伸入接線盒3~6mm管口用黑膠布包扎結實，接線盒內用濕棉紗、破布填實；外部用黑膠布纏繞，以防止水泥沙漿進入。Weldingandthreadedcanbeusedfortheconnectionbetweenelectricalconduitandsockets,electricalconduitareputtedintothesockets3~6mmThemouseoftheconduitwithblackadhesivebandage,internalpartsofthesocketfilledwithawetcottonyarn,cloth;Externalwithblacktapewinding,inordertopreventcementmortarhavingaaccessinto.11．接線盒安裝時必須與模板緊貼，并用鋼筋在接線盒四周加固；電纜管直徑≤DN25的指明及消防報警預埋管放置于模板與鋼筋網之間，預埋管綁扎在鋼筋網上，與模板之間預留間隙≥15mm；電纜管在接線盒處的固定點與接線盒間距不得大于200mm。Socketmustbeclingytothetemplateandreinforcedaround,othesocketsofthecablemustbeweldingwithacrossbar(from6or8mmroundsteel;12.所有外露預留的電纜管及伸入分電箱、木制接線盒等管口應伸出砼面200mm以上，電纜管口必須封堵。續接管路用膠布封口后加套帽。Allthereservedoutsideelectricalconduitandthoseintothedistributionbox,andwoodenboxshouldstretchouttheconcreteover200mm,addingironplateweldingseal,steelplatewithcuttingmachineandsmooth.Thecontinuedjacketedpipesetacoveraftersealingwithtape.13．電纜管過縫制作：采用在電纜管外套比電纜管外徑大兩級套管，套管與電纜管口部密實封堵，電纜管套管制作規格，長度如下：Manufactureforexpansionjoint,adoptingthetwolevelsofcasingpipecoatthanelectricalconduitdiameter,firstwindinglinenbetweencasingandelectricalconduitthenfillingwithas