NF EN 131-4

Ladders - Part 4 : single or multiple hinge-joint ladders

Le présent document spécifie les exigences, les essais et le marquage des échelles transformables articulées dotées d'une ou de plusieurs articulations. Il ne s'applique pas aux articulations des échelles transformables et doubles définies dans la NF EN 131-1. Le présent document de cette norme s'applique conjointement avec la NF EN 131-1, la NF EN 131-2 et la NF EN 131-3.

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