SIST EN 131-6:2019

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lestve - 6. del: Teleskopske lestveLeitern - Teil 6: TeleskopleiternÉchelles - Partie 6 : Échelles téléscopiquesLadders - Part 6: Telescopic ladders97.145LestveLaddersICS:Ta slovenski standard je istoveten z:EN 131-6:2019SIST EN 131-6:2019en,fr,de01-maj-2019SIST EN 131-6:2019SLOVENSKI
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SIST EN 131-6:2019



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 131-6
February
t r s { ICS
{ yä s v w Supersedes EN
s u sæ xã t r s wEnglish Version
Ladders æ Part
xã Telescopic ladders Échelles æ Partie
xã Échelles télescopiques
Leitern æ Teil
xã Teleskopleitern This European Standard was approved by CEN on
t x November
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s { CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s u sæ xã t r s { ESIST EN 131-6:2019



EN 131-6:2019 (E) 2 Contents Page European foreword . 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 5 4 Functional dimensions . 6 4.1 General dimensions . 6 4.2 Specific dimensions . 6 4.3 Top rung clearance l6 . 6 4.4 Outside width b4 . 7 5 Requirements . 7 5.1 General requirements . 7 5.2 Distance between rungs/steps . 7 5.3 Additional requirements for the top of leaning ladders . 8 5.4 Locking of the rung/step sections . 8 5.5 Design . 8 5.6 Base width b2 . 8 6 Testing . 8 6.1 General . 8 6.2 Ladder preconditioning . 9 6.2.1 General . 9 6.2.2 Drop test . 9 6.3 Strength test of stiles . 9 6.4 Bending test of stiles . 11 6.5 Lateral deflection test of the ladder . 11 6.6 Bottom stile ends test . 11 6.7 Vertical load on rungs, steps and platforms . 11 6.7.1 General . 11 6.7.2 Rungs and steps . 11 6.7.3 Platform . 12 6.7.4 Rungs/steps strength test – unlocked position . 13 6.7.5 Torsion test of rungs/steps . 13 6.7.6 Pull out test of rung/step . 14 6.8 Test of opening restraints and hinges of standing telescopic ladders . 14 6.9 Base slip test for leaning ladders . 14 6.10 Test of locking mechanism . 14 6.10.1 Cyclic test of locking mechanism . 14 6.10.2 Static test of locking mechanism . 15 6.10.3 Cyclic test of hinge joints . 15 6.11 Feet/End cap pull test . 16 6.12 Asymmetrical bending test . 16 6.13 Test methods for plastic ladders . 16 6.14 Test methods for plastic rung/step brackets . 16 6.15 Durability . 16 6.16 Opening and closing cycle test . 16 SIST EN 131-6:2019



EN 131-6:2019 (E) 3 7 Marking and user instructions . 17 7.1 General . 17 7.2 Marking . 17 7.3 User instruction . 17 7.4 List of items to be inspected . 17 7.5 Storage . 18 Annex A (normative)
Test sequence . 19 Annex B (informative)
Deviations . 20 B.1 General . 20 B.2 Deviations from the Netherlands . 20 B.3 Deviations from Sweden . 21 Bibliography . 22
SIST EN 131-6:2019



EN 131-6:2019 (E) 4 European foreword This document (EN 131-6:2019) has been prepared by Technical Committee CEN/TC 93 “Ladders”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2019, and conflicting national standards shall be withdrawn at the latest by August 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 131-6:2015. In comparison with the previous edition, the following technical modifications have been made: a) strength test in position of use; b) durability test for the complete ladder added; c) asymmetrical bending test added; d) requirements specified in more detail and aligned with the EN 131 series. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard is one of a series about ladders. The other standards of this series are listed in Clause 2 and in the Bibliography. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 131-6:2019



EN 131-6:2019 (E) 5 1 Scope This document specifies the general design features, requirements and test methods and defines terms for leaning and standing telescopic ladders. Ladders with extension elements are not covered by this part of EN 131. This part of the standard is intended to be used in conjunction with EN 131-1, EN 131-2, EN 131-3 and if applicable EN 131-4. 2 Normative references 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, Ladders — Part 1: Terms, types, functional sizes EN 131-2:2010+A2:2017, Ladders — Part 2: Requirements, testing, marking EN 131-3:2018, Ladders — Part 3: Marking and user instructions EN 131-4:2007, Ladders — Part 4: Single or multiple hinge-joint ladders 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 131-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp 3.1 telescopic ladder ladder consisting of three or more rung/step sections with telescopic stiles 3.2 hinge-joint telescopic ladder ladder including one or more hinge-joint devices with at least one predetermined lockable position 3.3 rung/step section section of ladder that consists of one rung/step connected to two telescopic stiles 3.4 rung/step bracket part that attaches the rung/step to the stile 3.5 rung/step section locking mechanism mechanism that locks a rung/step section SIST EN 131-6:2019



EN 131-6:2019 (E) 6 3.6 locking indicator mechanism or part that indicates that one rung/step section or part of one rung/step section is locked/unlocked 3.7 locking pin part that locks each rung/step section and that is engaged when the locking mechanism is locked 3.8 protection against squeezing mechanism or part that minimizes the risk of squeezing when the ladder is shortened 3.9 release function function which releases the locking mechanism 3.10 base section section starting from the lower end of the ladder 3.11 ascendable part part of the ascending leg consisting only of fully extended rung/step sections 3.12 storage position position where none of the rung/step sections are extended 3.13 locking mechanism system that retains the rungs in the desired position of use 4 Functional dimensions 4.1 General dimensions Dimensions are given in EN 131-1. 4.2 Specific dimensions For leaning telescopic ladders dimension l3 is not applicable providing l6, see 4.3, is fulfilled. If l6 is not fulfilled l3 shall begreater than 0,5 l5 and less than l5 + 15 mm measured along a line in the middle of the stiles. 4.3 Top rung clearance l6 The dimension l6 is the horizontal clearance between the top rung and any obstruction (specifically the wall) when the ladder is in its position of use. The dimension l6 is the horizontal distance between the top rung and the wall when measured with the ladder in its position of use at any angle between 65° and 75° (see Figure 1). This shall not be less than 35 mm and not more than 300 mm. The minimum clearance between the top rung and any obstruction shall be 35 mm in any case. SIST EN 131-6:2019



EN 131-6:2019 (E) 7
Figure 1 — Top rung clearance l6 4.4 Outside width b4 The dimension b4 is the outside width measured to the outside of the stiles at its widest part at the bottom of the ladder, see Figure 2.
Figure 2 — Outside width b4 5 Requirements 5.1 General requirements The drawings in this part of EN 131 are examples only and products do not need to correspond. However, dimensions are binding. For other requirements EN 131-2:2010+A2:2017, Clause 4 applies. 5.2 Distance between rungs/steps When the ladder is in its position of use the rungs/steps allowed to stand on shall always be equally spaced in accordance with EN 131-1:2015, 4.1. SIST EN 131-6:2019



EN 131-6:2019 (E) 8 In the position of use the construction shall not allow different distances between the rungs/steps with a tolerance of ±2 mm in the ascendable part of the ladder and ensure that the rung/step sections that are not extended shall be stacked at the top of the ladder. Manufacturer shall take all necessary precautions to prevent these distances been altered without manipulation and the use of tools. 5.3 Additional requirements for the top of leaning ladders The top of the ladder shall be designed in a way that a 2-point area of contact between the top of the ladder and a vertical plane can be ensured. 5.4 Locking of the rung/step sections The ladder shall be designed in way that all extended rung/step sections are locked when the ladder is in the position of use. Every rung/step section shall have a locking mechanism for each stile. With the ladder in position of use it shall be clearly visible to the user that all of the locking mechanisms are locked or unlocked. NOTE Visible indication can for example be a coloured area of a visible locking pin. 5.5 Design Screws and nuts shall be secured against loosening, for example by means of self-locking or mechanically locked safety mechanisms. It shall not be possible to separate rung/step sections without using tools. The unlocking and sliding in of the ladder shall be possible in a safe way. The ladder shall be designed in a way that squeezing between the rungs/steps is avoided when the ladder is used in accordance to the user instructions. Protection against squeezing can be ensured by a breaking function that reduces any impact load on the user’s hands when the ladder is collapsed according to the manufacturer's instruction. If a permanent breaking function is used a typical time for collapsing a section of 300 mm is 1,5 s if the movement is uniform. If only a distance device is used for protection against squeezing between the rung/steps this device shall be located at least 80 mm from the manufacturers recommended position of the user’s hands during collapse of the ladder. 5.6 Base width b2 The minimum permanently available base width b2 for leaning ladders with a length l1 of 3 000 mm or more shall be derived from: 2410,1bbl=+×=Where=b4 is the outside width of the stiles at the bottom of the ladder excluding any rung/step brackets, see 4.4. 6 Testing 6.1 General Telescopic ladders shall be tested to and comply with the requirements defined in EN 131-6. For all tests, unless otherwise stated in the particular test, the following tolerances apply: SIST EN 131-6:2019



EN 131-6:2019 (E) 9 — ±1 mm for longitudinal measurements; — ±5 mm for the measurement of the distance between the supports and the overhanging length; — ±1 ° for the measurement of angles; — ±1 % for static forces and torque. Tests shall be performed at a temperature between 15 °C and 25 °C. Where the ascendable side cannot be determined by the construction of the product, or where it is a multiple part combination ladder, the ladder shall be tested twice regarding 6.3 and 6.4. Conduct strength test and bending test on one side then rotate the ladder 180 ° about the longitudinal axis and repeat 6.3 and 6.4. The second test can be carried out on a new ladder. Inspect the ladder before testing to confirm condition and operation of all parts by fully extending the ladder. 6.2 Ladder preconditioning 6.2.1 General Ladders for testing shall be preconditioned according to 6.2.2. After preconditioning the following requirement shall be met: — no rupturing of parts shall be observed; — the release function and/or locking indicator shall work correctly; — the locking mechanism shall work correctly; — there shall be no relative movement between the connectors and the rungs/steps; — permanent deformation is only acceptable providing the ladder remains fully functional and it does not impair the fitness for use, or safety, of the ladder; — the complete ladder shall be fit for use; — the protection system against squeezing or entrapment shall be fully functional. The ladder shall pass all the test from test block A, see Annex A 6.2.2 Drop test Place the extended ladder in vertical position. Let the ladder fall in the direction of use from vertical to horizontal position on a flat concrete floor by its own weight. Repeat the test with ladder rotated 180 ° about the longitudinal axis. Bring the ladder back to storage position. 6.3 Strength test of stiles The test shall be carried out on the complete ladder. The test shall be carried out on the maximum extended ladder according to the manufacturer’s instruction. 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. The second test can be carried out on a new ladder. SIST EN 131-6:2019



EN 131-6:2019 (E) 10 Erect the ladder in its position of use at the maximum extension. Ladders shall be erected at 65 ° with the top resting against a smooth vertical surface and with the base of the ladder blocked to prevent it slipping. The test load F according to Table 1 shall be applied to the rung or tread nearest to the centre of the ladder and at a point 50 mm from the inside of one stile a
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