施工方案

施工方案 Constuction melhod 1二、配管下料一律使用钢句切断,严禁使用管央刀,电气焊设备。 切断后管口用回钴光滑， 无毛刺现象，嘲本管治最近的线路数设，埋入墙内线管与二面当下不小于 5mm， 钢管90” 度 坷的检曲半径隧配不小于管外径 10 售，硒曲记度小于管外径 10站，明配管数设栖册半径大于 管外径 6 舍，水平或和直数设的钢管 2m 内时钳生不大于 3nm，并按规范要求加接线个 The pipe materials used for burying into the wall and installation outside the wall shall be cut only by an hacksaw Gas cutting equipment 、Bipe cutterandsDMCutting areprohibition The pipe end shall be polished by a round file to avoid spur Phenomenon .The pipe used for burying into the walls shall be placed according to the shortest distance Principle，moreover，the net length from the steel pipe buried into the wallsto the wall surface shall be not less than 15mm， and that the 90。degree benading radius steel shall be not lessthan 10times the length of thepipe diameter/ anad that the bending flat shall be less than 10% of the pipe diameter， The radius of the pipe installed outside the walls shall be not less than 6 times the length of the Pipe diamerer，the horizontality and verticalicy error of the installed pipe shall be not more than 0.15，the junction box shall be installed in accordance with the criterion。 2 线管进入箱、企均采用一字坦重直进箱、例，管外几与顶板上边缘的净距大于 6Dmmm 过免 今后打胸卫曙检时损坏。玖设好的管口用罕头堵牢，防目砂此或异物进入，埋接负管分时采 用液压这管器。 The pipes shall be vertically bent into the box，and thar the ner discance between the tube wall and the boxes' roof shall be not less than 60mm to