之字型马道搭设方案钓杆
本工程马道采用之字型马道,仅供人员上下使用,搭设构造如下:
1、搭设之字型马道宽度为1.2m,坡度为1:3,转弯休息平台宽度为1.5m,休息平台面积不小于3m2;
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2、马道两侧及平台设两道高度为1.2m护身栏,并设18cm高度挡脚板,里侧拐角及进出口处护身栏不得伸出端柱;
游记3、脚手板满铺、绑扎牢固,搭接部分应用双排木,接茬板端应搭过排木20cm,并用三角木填补板头凸楞,斜坡马道脚手板设厚度为3*3cm,间距不大于30cm地防滑木条;
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4、这字型马道必须三面设剪刀撑,每层与结构拉结牢固.
5、护头棚搭设宽度宽于出入口,搭设长度为4-6m,高度不低于3m,双层防砸棚,两侧设八字斜杆,通道两侧用密目网封闭严密,棚顶满铺脚手板,板缝封严,做好安全通道标志,防护棚上部严禁堆放材料.
6、马道搭设位置详见平面布置图;
基础施工平面布置图
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