[电气预埋规范] 电气预埋管图集.docx

[电气预埋规范] 电气预埋管图集 　　电气埋管施工工艺细则　　Electrical conduit construction technology rules　　1． 禁止使用电焊、气焊割管　　Strictly prohibited in using gas and electric welding cutting conduit.　　2． 禁止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洁净，并除去毛刺　　Exist serious corrosion conduit is not allowed used; the mouse of the conduit as the inner part the depis must be removed before bending or installation　　3． 电缆管切割采取手工锯或切割机进行切割，并确保切割面平整且不倾斜；切割后必需立刻将管口毛刺打磨洁净，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 cutting must be immediately, and polished type nozzle into horn.　　4． 电缆管的弯曲半径R≥10D；弯曲角度≥90°，并尽可能降低90°弯头；电缆管弯制不得出现显著的凹瘪、裂纹、折皱 ，钢管弯扁程度≤　　Bending radius R ≥ 10D ;Bending Angle ≥90 °, and as less as possible the 90 °elbow; conduit bending cannot appear obvious concave, crack, wrinkle, flat steel tube bending flat level ≤ D .　　6．电缆管安装时，每根电缆管弯头数量不得超出3个，90°弯头不得超出2个 超出上述标准须增加转接盒。

　　When installation conduit, the amount of each conduit elbow shall not　　exceed 3, elbow with 90 °shall not be more than 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．电缆管连接不得对接焊，必需采取短套管；套管长度≥50mm；　　when conduit connection a short socket must be used，and no butt welding：电缆管由大到小次序排列；：3~9根可排列成一排或两排；：10根及以上必需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；成排电缆管预留高度一致。

　　There are more than three conduit at a same place, the outing concrete must be neat, beautiful ;Drawings without clear requirements, sorted by the following principles: : from big to small order; : 3 ~ 9 pieces can be arranged in a row or two rows; : 10 and above must be arranged in two rows or more and each row width is the same, the width of the difference should be less than the diameter of two embedded pipes; rows electrical conduit reserved height are the same;。