BS EN 131-4:2020 pdf free.Ladders.Single or multiple hinge-joint ladders.
BS EN 131-4 This document specifies the requirements, tests and marking of hinged combination ladders with one or several hinge joints.This document is not applicable to hinge-joints of combination and standing ladders as defined by EN 131-1. This part of the standard is intended to be used in conjunction with EN 131-1, EN 131-2 and EN 131-3. The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.EN 131-1:2015+A1:2019, Ladders一Part 1: Terms, types, functional sizes EN 131-2:2010+A2:2017, Ladders一Part 2: Requirements, testing, marking EN 131-3, Ladders一Part 3: Marking and user instructions For the purposes of this document, the terms and definitions given in EN 131-1 and the fllowving apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses:
ISO Online browsing platform: available at https://www.iso.org/obp/ui 一IEC Electropedia: available at http://www.electropedia.org/If the decking component fits within the stiles the gap shall be no more than 5 mm (see Figure 11). If the decking component fits across the stiles, the overhang shall be no more than 25 mm on each side. The platform shall be centred at土10 mm in relation to the longitudinal axis of the ladder. Where decking components consist of multiple elements, they shall be assembled such that a person cannot fall through them.The test shall be carried out on the complete ladder. The test shall be carried out on the maximum extended ladder according to the manufacturers’ instruction. Lateral or pole type stabilizers shall not be deployed in this test if the design permits the ladder to be used with the lateral or pole type stabilizers removed or temporarily adjusted as permitted by EN 131-1:2015+A1:2019, 4.2.1, General.Where the ascendable side cannot be determined by the construction of the product the ladder shall be tested twice. For the second test the ladder shall be rotated 180° about the longitudinal axis. For the test of the second side a new ladder shall be used. Erect the ladder in its position of use at the maximum extension. Leaning ladders shall be erected at (65土0,5)° (measured at vertical height of 1 m) with the top resting against a smooth vertical surface
and with the base of the ladder restrained where it makes contact with the ground to prevent it slipping. The test load F in Figure 13 from Table 3 shall be applied to the rung or tread nearest the centre of the ladder and at a point 50 mm from the inside of one stile and distributed over a 100 mm of the length of the rung or tread for a period of 1 min. Care should be taken to apply the load smoothly.BS EN 131-4 pdf download.