【判断题】【消耗次数:1】
防护栏杆搭设,上杆离地高度为1~1.2m,下杆离地高度为0.5~0.6m。()
正确
错误
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相关题目
【判断题】 承插型盘扣式双排外脚手架作业层防护栏杆可在每层作业面立杆的0.6m和1.2m的盘扣节点处布置上、中两道水平杆,并应在外侧满挂密目安全网。
①  正确
②  错误
【多选题】 临边防护栏杆的上杆应符合下列哪些规定?( );
①  离地高度1.0~1.2m
②  离地高度0.5~0.6m
③  承受外力3000N
④  承受外力2000N
⑤  承受外力1000N
【多选题】 开挖深度超过2m的基坑周边必须安装防护栏杆。防护栏杆应牢固可靠并符合下列规定( )。
①  防护栏杆高度不应低于1.2m
②  横杆应设2道~3道,下杆离地高度宜为0.3m~0.6m ,上杆离地高度宜为1.2m~1.5m
③  立杆间距不宜大于1.8m,立杆离坡边距离宜大于0.5m
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⑤  挡脚板高度不应小于180mm,挡脚板下沿离地高度不应大于20mm
【多选题】 下列临边防护栏杆的上杆应符合规定的是( )
①  离地高度1.0-1.2m
②  离地高度0.5-0.6m
③  承受向上的外力3000N
④  承受向下外力2000N
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①  防护栏杆应由上、下两道横杆及栏杆柱组成
②  上杆离地高度为1.5~1.8m
③  下杆离地高度为0.4~0.6m
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⑤  下杆离地高度为0.6~0.8m
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②  上杆离地高度为1.5-1.8m
③  下杆离地高度为0.5-0.6m
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⑤  下杆离地高度为0.6-0.8m
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①  正确
②  错误
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⑤  下杆离地高度为0.6~0.8m
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