電氣預(yù)埋規(guī)范

1、 電氣埋管施工工藝細則Electrical conduit construction technology rules嚴禁使用電焊、氣焊割管。Strictly prohibited in using gas and electric welding cutting conduit.嚴禁將腳手架作為電纜管使用。Strictly prohibited in using the folder as electrical conduit.3. 銹蝕嚴重的鋼管不得使用；鋼管彎制或安裝前應(yīng)將管口及管內(nèi)雜物清掃干凈，并除去毛刺。 Exist serious corrosion conduit is not

2、allowed used; the mouse of the conduit as the inner part the debris must be removed before bending or installation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。Cutting for the conduit adopting in manual saw or machine, and ensure the cutting surface smooth and not tilt; burring after cu

3、tting must be immediately, and polished type nozzle into horn.電纜管的彎曲半徑R10D（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(xiàn)明顯的凹癟、裂紋、折皺 ，鋼管彎扁程度0.1D（電纜管外徑）。Bending radius R 10D (here D is conduit out diameter);Bending Angle 90 , and as less as possible the 90 elbow; conduit bending cannot appear obvious concave, cr

4、ack, wrinkle, flat steel tube bending flat level 0.1 D (here D is conduit out diameter).6電纜管安裝時，每根電纜管彎頭數(shù)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(shè)不得大于30米）超過上述標(biāo)準(zhǔn)須增加轉(zhuǎn)接盒。When installation conduit, the amount of each conduit elbow shall not exceed 3, elbow with 90 shall not be more than

5、 2；the conduit length 12m, shall not be more than two elbow; The length of the conduit that changed between 8m and 12m , shall not be more than three elbow; straight shall not be more than 30 meters；If exceed the standard more than the standard must increase the transfer box.7電纜管連接不得對接焊，必須采用短套管；套管長度

6、50mm；when 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.電纜管型號Type壁厚（mm）Thickness電纜管外徑（mm）Out diameter.連接套管內(nèi)徑（mm）Socketinner diameter連接套管的長度（mm）LengthDN253.2533.53550mmDN323.2542.34350mmDN503.

7、5606150mmDN804888950mm8電纜管連接時,先將套管中間凸臺毛刺打磨干凈，然后將電纜管插入套管中，電纜管與凸臺之間不得留有間隙；連接套管與電纜管兩側(cè)均勻電焊4點，并用黑膠布纏繞封實； When coupling, there shouldnt gap between the two conduit and the counterpart malocclusion is less than 2 mm, counterpart seam should be in the middle of the socket, and the both sides along the circu

8、mferential welding sealing, partial cannot welding must use black tape winding sealing with fastened iron wire; 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(huán)鉤加固、切割2030mm套管套至固定點進行，固定間距：1520為1.01.5米，2532為1.52.0米，4050為2.02.5米，65以上不大于3米。 Pot welding reinforce cant be allowed outside the wall of conduit directly, a a

9、vailable steel bar will be made into a ring hook, and then cutting 20 30 mm one end fasten to conduit another one stable point or iron wire colligation fixed 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 than 3 meters 10電纜管與接線

10、盒的連接可采用焊接和絲扣連接，：電纜管伸入接線盒36mm管口用黑膠布包扎結(jié)實，接線盒內(nèi)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。Welding and threaded can be used for the connection between electrical conduit and sockets, electrical conduit are putted into the sockets 3 6 mmThe mouse of the conduit with black adhesive bandage, internal parts of the socket

11、filled with a wet cotton yarn ,cloth; External with black tape winding, in order to prevent cement mortar having a access into.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(yù)埋管放置于模板與鋼筋網(wǎng)之間，預(yù)埋管綁扎在鋼筋網(wǎng)上，與模板之間預(yù)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。Socket must be clingy to the template and reinforced around

12、, between the electrical conduit and template reserved clearance 15 mm or more. into the sockets of the cable must be welding with a cross bar (from 6 or 8mm round steel; 12. 所有外露預(yù)留的電纜管及伸入分電箱、木制接線盒等管口應(yīng)伸出砼面200mm以上，電纜管口必須封堵。續(xù)接管路用膠布封口后加套帽。All the reserved outside electrical conduit and those into the d

13、istribution box, and wooden box should stretch out the concrete over 200mm, adding iron plate welding seal, steel plate with cutting machine and smooth. The continued jacketed pipe set a cover after sealing with tape.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(guī)格，長度如下：Manufacture for expansion

14、 joint, adopting the two levels of casing pipe coat than electrical conduit diameter, first winding linen between casing and electrical conduit then filling with asphalt close-grained, Specifications, the length is as follows:電纜管型號Type壁厚（mm）thickness電纜管外徑（mm）out diameter過縫套管規(guī)格specification過縫套管內(nèi)徑（mm）

15、Inner diameter過縫套管的長度（mm）length253.253354041600323.254235053800503.5608080.51200804885125131180014 同一處電纜管超過3根，出砼必須排列整齊、美觀（橫平豎直 ）；圖紙沒有明確要求時，按下述原則排列：（1）：電纜管由大到小順序排列；（2）：39根可排列成一排或兩排；（3）：10根及以上必須排列成兩排或兩排以上，且每排寬度大致相當(dāng)，寬度相差宜小于兩根埋管的直徑；（4）成排電纜管預(yù)留高度（或長度）一致。There are more than three conduit at a same place, the outing concrete must be neat, beautiful (horizontal and vertical);Drawings without clear requirements, sorted by the following principles: (1) : from big to small order;(2) : 3 9 pieces can be arranged in a row or t