施工方案

施工方案 Constuction melhod 1 明暗配管下料一律使用铀句切断， 严禁使用管天刀,电气埋设备。 切断后管口用国刍光滑， 无所刺现象，嘲配和治最近的线路数设，埋入堵内线管与堵面兆中不小于 1Smm， 钢管90” 度 坷的厅曲半径号不小于管外径 10 舍，订曲记度小于管外径 10%，明配管数设村曲半径大于 管外径 6 伴，水平或生直数设的钢管 2m 内时千钴不大于 3mmm，并技规范要求加接线全 The pipe materials used for burying into the wall and installation outside the wall shall be cut only by an hacksanwy Gas cutting equipment、Pipe cutter and EDMCutting 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 walls to the wall surface shall be not less than 15mm， and that the 90。degree benading radius steel shall be not less than 10 times the length of the pipe diameter/ anad that the bending flat shall be less than 10% of the pipe diameter， The radius of he pipe installed outside the walls shall be not less than 6 times the length of the pipe diamerer，the horizoncality and verticality error of the installed Pipe shall be not more than 0.15，the junction box shall be installed in accordance with the criterion。 >。 线管进入箱、奉均采用一字考垂直进箱、僵，管外避与项家上边缘的净下大于 6Omm 中免 今后打胶胀曙检时损坏。数设好的管口用塞头培牢，防目砂柴或异物进入，夫接负管分时采 用液压达答器。 The pipes shall be vertically bent into the box，and zhar the ner discance between che tube wall and the boxes' roof shall be not less than 60mm to