电气预埋规范

1、.电气埋管施工工艺细则Electrical conduit construction technology rules1 严禁使用电焊、气焊割管。Strictly prohibited in using gas and electric welding cutting conduit.2 严禁将脚手架作为电缆管使用。Strictly prohibited in using the folder as electrical conduit.3. 锈蚀严重的钢管不得使用；钢管弯制或安装前应将管口及管内杂物清扫干净，并除去毛刺。Exist serious corrosion conduit is n

2、ot allowed used; the mouse of theconduit as the inner part the debris must be removed before bending orinstallation3 电缆管切割采用手工锯或切割机进行切割，并保证切割面平整且不倾斜；切割后必须立即将管口毛刺打磨干净，并打磨管口成喇叭型。Cuttingforthe conduitadoptingin manual saw or machine, and ensure thecuttingsurfacesmooth and nottilt;burringaftercuttingmus

3、t beimmediately, and polished type nozzle into horn.4 电缆管的弯曲半径R 10D（电缆管外径）；弯曲角度 90，并尽可能减少90弯头；电缆管弯制不得出现明显的凹瘪、裂纹、折皱，钢管弯扁程度0.1D（电缆管外径）。Bending radius R 10D (here D is conduit out diameter);Bending Angle 90 , and as lessas possible the 90elbow; conduit bending cannotappear obvious concave, crack,wrinkl

4、e,flatsteeltube bending flatlevel 0.1 D (here D is conduit out diameter).6电缆管安装时，每根电缆管弯头数量不得超过 3 个， 90弯头不得超过 2 个（埋管长度 12 米，不得多于 2 个弯头； 12 米埋管长度 8 米，不得多于 3 个弯头；直管埋设不得大于 30 米）超过上述标准须增加转接盒。When installation conduit, the amount of each conduit elbow shall not.exceed 3, elbow with90 shall not be more tha

5、n 2；the conduit length12m, shall not be more than two elbow;The length of the conduit that changed between 8m and 12m , shall not bemore than three elbow;straight shall not be more than 30 meters；Ifexceed thestandard morethan the standard mustincrease thetransferbox.7电缆管连接不得对接焊，必须采用短套管；套管长度50mm；when

6、 conduit connection a short socket must be used，and no butt welding （except spot welding）；the length of the socket more than 2 times of conduit out diameter.电 缆 管 型壁厚电缆管外径连 接 套 管 内 径连 接 套 管 的 长 度号（mm）（mm）（ mm）（mm）TypeThicknessOut diameter.SocketinnerLengthdiameterDN253.2533.53550mmDN323.2542.34350mm

7、DN503.5606150mmDN804888950mm8电缆管连接时 ,先将套管中间凸台毛刺打磨干净，然后将电缆管插入套管中，电缆管与凸台之间不得留有间隙； 连接套管与电缆管两侧均匀电焊 4 点，并用黑胶布缠绕封实；When coupling, there shouldnt gap between the two conduit and thecounterpart malocclusion is less than 2 mm, counterpart seam should bein the middle of the socket,and the both sides along the

8、 circumferentialweldingsealing,partialcannotweldingmust use blacktapewindingsealing with fastened iron wire;9 电缆管不得在外壁直接点焊加固， 加固采用铁丝绑扎或煨制钢筋成环钩加固、切割 2030mm 套管套至固定点进行， 固定间距：15 20 为 1.01.5 米， 25 32 为 1.52.0 米， 4050 为 2.02.5 米， 65 以上不大于 3 米。Pot welding reinforce can t be allowed outside the wall of cond

9、uitdirectly, a available steel bar will be made into a ring hook, and then.cutting 20 30 mm one end fasten to conduit another one stable point oriron wire colligationfixed spacing:15mm 20mm is 1.0 1.0 m, from 25mm to 32mm is 1.5 1.5 meters, 40mm 50mm is 2.0 2.5 meters, exceed 65mm not more than3 met

10、ers10电缆管与接线盒的连接可采用焊接和丝扣连接， ：电缆管伸入接线盒 36mm 管口用黑胶布包扎结实，接线盒内用湿棉纱、破布填实； 外部用黑胶布缠绕 ，以防止水泥沙浆进入。Welding and threaded can be used for the connection between electricalconduit and sockets, electrical conduit are putted into the sockets 3 6 mmThe mouse of the conduit with black adhesive bandage, internal parts

11、 ofthe socket filledwitha wet cottonyarn ,cloth;Externalwith blacktapewinding, in order to prevent cement mortar having a access into.11接线盒安装时必须与模板紧贴，并用钢筋在接线盒四周加固；电缆管直径 DN25 的指明及消防报警预埋管放置于模板与钢筋网之间，预埋管绑扎在钢筋网上，与模板之间预留间隙 15mm；电缆管在接线盒处的固定点与接线盒间距不得大于 200mm。Socket must be clingy tothe templateand reinforc

12、edaround, between theelectrical conduit and template reserved clearance 15 mm or more. intothe sockets of the cable must be welding with a cross bar (from 6 or 8mmround steel;12. 所有外露预留的电缆管及伸入分电箱、 木制接线盒等管口应伸出砼面 200mm 以上，电缆管口必须封堵。续接管路用胶布封口后加套帽。Allthereservedoutsideelectricalconduitandthoseintothedist

13、ribution box, and wooden box should stretch out the concrete over200mm, adding iron plate welding seal, steel plate with cutting machine.and smooth. The continued jacketed pipe set a cover after sealing withtape.13电缆管过缝制作：采用在电缆管外套比电缆管外径大两级套管，套管与电缆管口部密实封堵，电缆管套管制作规格，长度如下：Manufacture for expansion join

14、t, adopting the two levels of casing pipecoat than electricalconduitdiameter,firstwinding linenbetween casingand electrical conduit then filling with asphalt close-grained,Specifications, the length is as follows:电 缆 管 型壁厚（ mm） 电缆管外径过缝套管规过缝套管内过缝套管的号thickness（ mm） out格径（ mm）长度（ mm）Typediameterspecifi

15、cationInnerlengthdiameter 253.25335 4041600 323.25423 5053800 503.560 8080.51200 804885 125131180014 同一处电缆管超过3 根，出砼必须排列整齐、美观（横平竖直）；图纸没有明确要求时，按下述原则排列： （1）：电缆管由大到小顺序排列； （2）：39 根可排列成一排或两排；（3）：10 根及以上必须排列成两排或两排以上，且每排宽度大致相当，宽度相差宜小于两根埋管的直径； （4）成排电缆管预留高度（或长度）一致。There are more than three conduit at a same place, the outing concretemust be neat,beautiful(horizontaland vertical);Drawingswithoutclearrequirements,sortedby the following principles:(1) : from big tosmallorder;(2) : 3 9 pieces can be arranged in a ro