膇 XX 县城区供排水管网改造工程 袅（三标段） 膂施 莇工 芄组 莃织 羁设 莇计 蚅重庆 XX 工程有限公司 肅 2012 年 8 月 15 日 蚀目录 螀第一章工程概况······················································3 肆给水部分 蒃一、设计依据····························································3 螃二、采用技术标准、规范················································3 袀三、工程设计概况·························································3 蒇排水部分 芅一、工程概况···································