人工挖孔墩基础方案一、工程概况 ························································································· 1 二、施工准备 ························································································· 32.1 材料及主要机具： ········································································ 3 2.2 作 业 条 件 ： ·················································································· 4 三、操作工艺 ························································································· 4 四、质量标准 ························································································· 94.1 保证项目： ················································································ 10 4.2 基本项目： ················································································ 10 4.3 允许偏差项目 ············································································· 10 五 、成品保护 ························································································ 11 六 、 应 注 意 的 质 量 问 题 ·······················...
