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[单选题]
脚手架上采用搭接铺设脚手板时,脚手板的搭接长度不小于()。
A.50mm
B.100mm
C.150mm
D.200mm
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A.50mm
B.100mm
C.150mm
D.200mm
A.冲压钢脚手板、木脚手板、竹串片脚手板等,一般应设置在三根横向水平杆上
B.当采用搭接铺设时,其搭接长度至少应大于200mm
C.当脚手板长度小于2m时,可采用两支点支撑,但应将两端固定
D.当采用搭接铺设时,其搭接长度至少应大于150mm
E.作业层脚手板应铺满、铺稳、铺实
A.200mm-300mm
B.120mm-150mm
C.130mm-150mm
D.150mm-200mm
脚手架在搭接铺脚手板时,两块板端头搭接长度应不小于()mm。
A.200
B.250
C.300
D.150
E.100
A.脚手板设置在三根横向水平杆上
B.脚手板长度小于2m时,可釆用两根横向水平杆支承
C.脚手板对接平铺时,脚手板外伸长度应取130mm-150mm
D.脚手板搭接铺设时,搭接长度不应小于100mm
E.脚手板搭接铺设时,其伸出横向水平杆的长度不小于100mm
A.400mm,200mm
B.300mm,150mm
C.300mm,200mm