EN 131-4:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ladders - Part 4: Single or multiple hinge-joint laddersEchelles - Partie 4: Echelles articulées a articulations simple et multipleLeitern - Teil 4: Ein- oder MehrgelenkleiternTa slovenski standard je istoveten z:EN 131-4:2007SIST EN 131-4:2007en;de97.145LestveLaddersICS:SLOVENSKI
STANDARDSIST EN 131-4:200701-julij-2007

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 131-4May 2007ICS 97.145 English VersionLadders - Part 4: Single or multiple hinge-joint laddersEchelles - Partie 4: Echelles articulées à articulationssimple et multipleLeitern - Teil 4: Ein- oder MehrgelenkleiternThis European Standard was approved by CEN on 22 March 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 131-4:2007: E

Test sequence.13 Annex B (informative)
A-deviations.15

3 Foreword This document (EN 131-4:2007) has been prepared by Technical Committee CEN/TC 93 “Ladders”, the se-cretariat 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 November 2007, and conflicting national standards shall be with-drawn at the latest by November 2007. This European Standard is one of a series about ladders. Other standards of this series are listed in Clause 2. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Re-public, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Figure 1 — Position as leaning ladder Figure 2 — Position as standing ladder

5 3.1.2 ladder with several lockable hinge-joint devices ladder having several hinge-joint devices with at least one fixed position which can be locked by hinge-joint devices at predetermined angles NOTE See Figures 3 to 6.
Figure 3 — Position 1 “Single ladder” Figure 4 — Position 2 “Standing ladder”
Figure 5 — Position 3 “Stand – off” Figure 6 — Position 4 “Platform”
3.2 ladder hinged in the lateral direction ladder having several hinge-joints enabling it to be folded laterally NOTE 1 The hinge-joints can be located between the legs and the steps. The steps themselves can be equipped with hinge-joints. NOTE 2 See Figure 7.
Figure 7 — Ladder hinged in the lateral direction 3.3 decking component single or multiple element forming a standing surface enabling the use of a multiple hinge-joint ladder in the “platform” position

3.3.3 overhang l10 length of the decking component after the last support point 4 Functional dimensions 4.1 Ladders in single, standing and transformable position Dimensions are given in EN 131-1. 4.2 Ladders hinged in “leaning ladder or standing ladder” positions If these ladders can be used as leaning ladders then functional dimensions for leaning ladders will apply. If these ladders can be used as standing ladders then the functional dimensions for standing ladders will apply.
Refer to subclauses of EN 131-1 dealing with the type of position. The inner width b1 shall be measured as shown in Figure 8.
Figure 8 — Dimension b1
7 4.3 Hinged ladders in “platform” position Table 1 — Functional dimensions Dimensions in millimetres
h3 l10 α a
α b min. — — 65° 65° max. 1 000 50 75° 70° a for rung ladders. b for step ladders.
If the decking component fits within the stiles the gap shall be no more than 5 mm. 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 ± 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.
NOTE b1 and b2 see EN 131-1 for the relevant ladder types.
Figure 9 — Hinge-joint ladder in "Platform" position 4.4 Hinged ladders in “stand-off” position Table 2 — Functional dimensions
l2 α min. — 65° max. 1 200 mm 75°
Figure 10 — Hinged ladder in “stand-off” position

9 Dimensions in millimetres
Figure 11 — Ladder strength test 6.2.3 Cyclic test of hinge joint These tests are conducted on hinge joints with an automatic locking device. To test their operation, hinge joints (lateral and longitudinal hinge joint ladders) shall withstand the cyclic tests. A pair of hinge joints comprising the maximum number of positions shall be subjected to a series of 4 000 cycles from the closed position to the fully open position. The hinge joint shall be locked and unlocked in each of its positions during the course of each cycle at the normal utilisation speed. No oil shall be added to the hinge joints during the tests. Requirement: Automatic locking function shall operate with no manual intervention for a duration of 4 000 cycles. 6.2.4 Test of the ladder in the platform position 6.2.4.1 General The tests shall be conducted on the complete assembly of decking components with the ladder in the plat-form position. 6.2.4.2 Strength test of the decking component Carry out the test with a load placed in the most unfavourable position at the centre of each decking compo-nent. The test force of 1 000 N is distributed over a 200 mm × 200 mm rigid steel plate. The weight of the steel plate is included in the test force. Deformation under load shall be less than or equal to 1 % of the decking component length. Residual deformation shall be less than or equal to 0,1 % of the decking component length. 6.2.4.3 Safety test of the ladder Carry out a test with a load placed at the centre of the decking component. The load is distributed over a 200 mm × 200 mm × rigid steel plate and is equivalent to 1,5 times the maximum load. Deformation under load shall be less than or equal to 2 % of the assembly of decking components length. A test with a load equal to two times the maximum total load is then conducted. The product shall remain functional after this test. The maximum load shall be stated by the manufacturer and shall not be less than 120 kg and not more than 150 kg.

Key 1 sheet metal square 2 load of 750 N 3 decking component F 300 N Figure 12 — Ladder stability test 6.2.4.5 Test of decking component sliding A horizontal force of 300 N shall be attached alternatively to the middle of each side of the decking compo-nent. Movement of the decking component shall not exceed 5 mm in the lateral direction. The decking component may move slightly but the stop positions shall conform to the limits of l10 in the lengthwise direction and the overhang in the lateral direction shall not be more than 25 mm on e
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