The distance between the center of the inner pole of the construction scaffolding and the outer edge of the building structure is usually 300mm~600mm.
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Door to door service of geomembrane construction @ charging standard of geomembrane construction @ seepage prevention principle of geomembrane [13969296123]
7 dead and 4 injured in scaffold falling: safety officer was arrested by pretending to sign! 31 people are being held accountable!
