Fixed steel ladder systems are subject to a separate set of standards Because they are permanently installed on buildings.
Galvanized Steel
① The landing platform width is 700mm ② The rung width is 400mm
③ The hight of landing platform fence is 1100mm ④ The length of landing exit is 1400mm
⑤ The rise of rung is 250mm ⑥ The depth of wall bracket is 250mm
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