进入井、检查井的砌筑
1、砌筑各种井前必须将基础面先洗涮干净,并定出中心点,划上砌筑位置及标出砌筑高度,便于操作人员掌握。
2、砌筑检查圆井应挂线校核井内径及圆度,收口段高度应事先确定,可按规定每皮砖缩入2cm,即每圈缩入4cm计算,砌一皮砖必须检查一次,看有无偏差。圆井井身及其收口段,必须避免上下层砖对缝。
3、雨水检查井内壁用1:2水泥砂浆批荡2cm,雨水井当管径D≥600时设流槽,当管径D<600时不设流槽,但在井底浇灌15#砼,厚度与管壁相同。
4、质量标准:井底、井面的标高要准确,井身尺寸要符合设计要求。长方形井井壁必须互相垂直,井形方正,并且井身的长轴线应与侧平石平行;如是圆井,应挂中心线校核井内径及圆度,砖砌井壁必须灰缝饱满、平整,抹灰应平顺密实,不得有空鼓、裂缝等现象。砌砖砂浆强度应满足设计要求。 北京管网施工、北京基础设施建设公司、北京非开挖施工、北京顶管施工、北京管道铺设
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