根据二号宿舍楼和办公楼的建筑面积，钢筋工不少于50人，一号宿舍楼钢筋工不少于20人。

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　　3、办公楼及二号宿舍楼6月底封顶，6月上旬进行填充墙施工，7月底进行主体验收。8月份初开始室内外粉刷，9月上旬进行外墙面砖的施工。

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• Use keywords related to your blog's topic.
• Avoid using hyphens or numbers.
• Make sure it's available (you can use a domain registrar's search tool to check).

　　进度方面：按照施工进度计划，实际进度相对滞后。原因分析：①人工挖孔桩技术难度较大；②六、七份雨水天气较多；③脚手架钢管租赁困难，未能及时投入使用，从而影响了工程进度。