城镇供热管网工程施工及规范(CJJ28-2004)目录前言.............................................................................................................................................................11总则.........................................................................................................................................................22工程测量.....................................................................................................................................................22.1一般规定...........................................................................................................................................22.2定线测量..........................................................................................................................................22．3水准测量.......................................................................................................................................22．4竣工测量.......................................................................................................................................32．5测量允许偏差...............................................................................................................................33土建工程及地下穿越工程.........................................................................................................................43．1开挖工程.......................................................................................................................................43．2土建结构工程........................................................................................................................43．3回填工程................................................................................................................................93．4地下穿越工程..............................................................................................................................104焊接及检验................................................................................................................................................114．1一般规定.....................................................................................................................................114．2焊接准备.....................................................................................................................................114．3焊接.........................................................................................................................................154．4焊接质量检验.............................................................................................................................165管道安装及检验........................................................................................................................................175．1一般规定.....................................................................................................................................175．2管道加工和现场预制管件制作.................................................................................................185．3管道支、吊架安装.....................................................................................................................215．4管沟和地上敷设管道安装....................
