165 ACCESS STAIRCASES- TECHNICAL INFORMATION - 2023 STAIRCASES After passing each level, the operator or user must make sure to close the trapdoor behind them. RECOMMENDATIONS •To prevent workers falling from heights, an intermediate ledger is added in the gap between the top of the guardrail and the bottom of the upper deck on the outside, and on the inside for a distance greater than 0.20 m from the building's façade. •Recommendation R 408 states: - At least one access per façade, - A maximum distance of 20 m between 2 accesses.
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