SIST EN 131-2:2010+A2:2017
(Main)Ladders - Part 2: Requirements, testing, marking
Ladders - Part 2: Requirements, testing, marking
This European Standard specifies the general design features, requirements and test methods for portable ladders.
It does not apply to step stools or ladders for specific professional use such as firebrigade ladders, roof ladders and mobile ladders.
It does not apply to ladders used for work on or near live electrical systems or installations. For this purpose EN 61478 applies.
NOTE For insulating ladders for use on or near low voltage electrical installations EN 50528 applies.
This European Standard is intended to be used in conjunction with EN 131 1.
For single or multiple hinge joint ladders EN 131 4 applies.
For telescopic ladders EN 131-6 applies.
For mobile ladders with a platform EN 131 7 applies.
Leitern - Teil 2: Anforderungen, Prüfung, Kennzeichnung
Échelles - Partie 2: Exigences, essais, marquage
La présente Norme européenne spécifie les caractéristiques générales de conception, les exigences et les méthodes d’essai applicables aux échelles portables.
Elle ne s’applique pas aux marchepieds ou aux échelles à usage professionnel spécifique tels que les échelles à incendie, les échelles de toit et les échelles escamotables.
Elle ne s’applique pas aux échelles utilisées pour effectuer des travaux sur des installations électriques ou à proximité de circuits électriques sous tension. À cet effet, l’EN 61478 s’applique.
NOTE Pour les échelles isolantes destinées à être utilisées sur ou à proximité d’installations électriques basse tension, l’EN 50528 s’applique.
La présente norme doit être utilisée conjointement avec l’EN 131 1.
Pour les échelles articulées à articulations simple et multiple, l’EN 131 4 s’applique.
Pour les échelles télescopiques, l’EN 131-6 s’applique.
Pour les échelles mobiles avec une plate-forme, l’EN 131 7 s’applique.
Lestve - 2. del: Zahteve, preskušanje, označevanje
Ta evropski standard določa splošne konstrukcijske značilnosti, zahteve in preskusne metode za prenosne lestve.
Ne uporablja se za pručke ali lestve za posebne poklicne uporabe, kot so gasilske lestve, strešne lestve in mobilne lestve.
Ne uporablja se za lestve, ki so namenjene za delo na električnih sistemih ali napravah pod napetostjo ali v njihovi bližini. Za ta namen se uporablja standard EN 61478.
OPOMBA: Za izolirne lestve na ali v bližini nizkonapetostne električne inštalacije se uporablja standard EN 50528.
Ta evropski standard je treba uporabljati v povezavi s standardom EN 131 1.
Za lestve z enojnimi ali več pregibi se uporablja standard EN 131 4.
Za teleskopske lestve se uporablja standard EN 131-6.
Za mobilne lestve s platformo se uporablja standard EN 131 7.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Leitern - Teil 2: Anforderungen, Prüfung, KennzeichnungÉchelles - Partie 2: Exigences, essais, marquageLadders - Part 2: Requirements, testing, marking97.145LestveLaddersICS:Ta slovenski standard je istoveten z:EN 131-2:2010+A2:2017SIST EN 131-2:2010+A2:2017en,fr,de01-marec-2017SIST EN 131-2:2010+A2:2017SLOVENSKI
STANDARDSIST-TS CEN/TS 16665:20141DGRPHãþD
SIST EN 131-2:2010+A2:2017
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 131-2:2010+A2
January
t r s y ICS
{ yä s v w Supersedes EN
s u sæ tã t r s r ªA sã t r s tEnglish Version
Ladders æ Part
tã Requirementsá testingá marking Échelles æ Partie
tã Exigencesá essaisá marquage
Leitern æ Teil
tã Anforderungená Prüfungá Kennzeichnung This European Standard was approved by CEN on
s x April
t r s t and includes Amendment
t approved by CEN on
s y September
t r s xä
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:
Avenue Marnix 17,
B-1000 Brussels
9
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s u sæ tã t r s r ªA tã t r s y ESIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 2 Contents Page European foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions . 6 4 Requirements . 7 4.1 General . 7 4.2 Materials . 7 4.3 Design . 12 4.4 Surface finish . 12 4.5 Hinges (turning points) . 13 4.6 Opening restraints . 13 4.7 Rungs/steps/platforms . 13 4.8 Platform . 14 4.9 #Ladder feet and anti-skid devices$ . 14 4.10 Extending and sectional ladders . 15 5 Testing . 15 5.1 General . 15 5.2 #Strength test for all ladders$ . 15 5.3 Bending test of the stiles. 18 5.4 Lateral deflection test of the ladder . 19 5.5 Bottom stile ends test . 20 5.6 Vertical load on rungs, steps and platforms . 21 5.7 Torsion test of rungs and steps . 22 5.8 Test of opening restraints and hinges of standing ladders . 23 5.9 Test for ladder rung/step hooks of extending ladders and combination ladders . 24 5.10 Kick-up test of the platform of standing ladders . 25 5.11 Feet pull test . 26 5.12 Test on hand-/kneerails . 28 5.13 Maximum extension of ladder . 29 5.14 3-part combination ladder in A-position test . 30 5.15 #Torsion test for standing ladders$ . 30 5.16 Test methods for plastic ladders . 33 6 Marking and user instructions . 51 7 Certification . 51 Annex A (normative)
Test sequence . 52 Annex B (informative)
A-deviations . 55 Bibliography . 58
SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 3 European foreword This document (EN 131-2:2010+A2:2017) 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 July 2017 and conflicting national standards shall be withdrawn at the latest by December 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes #EN 131-2:2010+A1:2012 and CEN/TS 16665:2014$. This document includes Amendment 1, approved by CEN on 2012-04-16 and Amendment 2 approved by CEN on 2016-09-17. The start and finish of text introduced or altered by amendment is indicated in the text by tags !" and #$. #deleted text$ 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. #Classification is determined in the strength test for all ladders and additionally in the durability test for standing ladders. A test protocol is being considered for an alternative base slip test on behalf of an expert group of the GPSD committee.$ 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 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 4 Introduction Due to the unhomogeneity of the material wood, special requirements have been appropriated on this item. SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 5 1 Scope This European Standard specifies the general design features, requirements and test methods for portable ladders. It does not apply to step stools or ladders for specific professional use such as firebrigade ladders, roof ladders and mobile ladders. It does not apply to ladders used for work on or near live electrical systems or installations. For this purpose EN 61478 applies. # NOTE For insulating ladders for use on or near low voltage electrical installations EN 50528 applies.$ This European Standard is intended to be used in conjunction with EN 131-1. For single or multiple hinge joint ladders EN 131-4 applies. #For telescopic ladders EN 131-6 applies. For mobile ladders with a platform EN 131-7 applies.$ 2 Normative references The following referenced documents are indispensable for the application 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 59, Glass reinforced plastics — Measurement of hardness by means of a Barcol impressor #EN 131-1:2015$, Ladders — Part 1: Terms, types, functional sizes EN 131-3, Ladders — Part 3: User Instructions EN 204, Classification of thermoplastic wood adhesives for non-structural applications EN 301, Adhesives, phenolic and aminoplastic, for load-bearing timber structures — Classification and performance requirements EN 385, Finger jointed structural timber — Performance requirements and minimum production requirements EN 386:2001, Glued laminated timber — Performance requirements and minimum production requirements EN 391:2001, Glued laminated timber — Delamination test of glue lines EN 392, Glued laminated timber — Shear test of glue lines EN 408, Timber structures — Structural timber and glued laminated timber — Determination of some physical and mechanical properties #EN 572-2, Glass in building — Basic soda lime silicate glass products — Part 2: Float glass$ EN 844-9:1997, Round and sawn timber — Terminology — Part 9: Terms relating to features of sawn timber SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 6 EN 1310, Round and sawn timber — Method of measurement of features #EN 10088-2:2014, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes$ EN 61478, Live working — Ladders of insulating material (IEC 61478:2001) EN ISO 179-1, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented impact test (ISO 179-1:2000) EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1:1993 including Corr 1:1994) EN ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994) EN ISO 3834-1, Quality requirements for fusion welding of metallic materials — Part 1: Criteria for the selection of the appropriate level of quality requirements (ISO 3834-1:2005) EN ISO 3834-2, Quality requirements for fusion welding of metallic materials — Part 2: Comprehensive quality requirements (ISO 3834-2:2005) EN ISO 3834-3, Quality requirements for fusion welding of metallic materials — Part 3: Standard quality requirements (ISO 3834-3:2005) EN ISO 3834-4, Quality requirements for fusion welding of metallic materials — Part 4: Elementary quality requirements (ISO 3834-4:2005) EN ISO 4892-2:2006, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps (ISO 4892-2:2006) EN ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
(ISO 6892-1:2009) EN ISO 14125, Fibre-reinforced plastic composites — Determination of flexural properties (ISO 14125:1998) #EN ISO 14644-1, Cleanrooms and associated controlled environments — Part 1: Classification of air cleanliness by particle concentration (ISO 14644-1)$ EN ISO 14731, Welding coordination — Tasks and responsibilities (ISO 14731:2006) 3 Terms and definitions For the purposes of this document, the terms and definitions given in #EN 131-1:2015$and the following apply. 3.1 thermoset plastic plastic that has been cured by heat or by other means such as radiation, catalysts, etc., into a substantially infusible and insoluble state [EN ISO 472:2001] SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 7 3.2 composite material crosslinkable resin-based material with a continuous reinforcement fibre as filler (e.g. fibreglass) 3.3 thermoplastic material plastic material other than thermoset plastic or composite with or without filler and with or without reinforcement 3.4 maximal total load maximum weight that the ladder is designed to support when set up in accordance with the manufacturer's instruction # 3.5 professional ladder ladder that is intended for use in a working environment$ 4 Requirements 4.1 General #The requirements are based upon a maximum total load of 1 471 N (150 kg).$ #deleted text$ # NOTE This value takes account of the weights of European professionals working at height and their equipment. Ladders are determined to be used by one person at a time but this excludes any person footing (stabilising) the ladder.$ 4.2 Materials 4.2.1 Aluminium — alloy All load bearing parts made of aluminium alloy shall have an elongation A5 at rupture measured according to EN ISO 6892-1 of minimum 5 %. All load bearing parts made of aluminium alloy shall have a thickness of at least 1,2 mm. 4.2.2 Steel If cold rolled steel or a special alloy-steel is used the ratio between 0,2 % yield-stress and ultimate strength (Rp 0,2/Rm) shall be lower than 0,92. All load bearing parts made of steel shall have a thickness of at least 1,0 mm. 4.2.3 Plastics Glass-fibre reinforced plastics shall be protected against penetration of water and dirt. The surface shall be smooth. The fibres shall be embedded. The Barcol hardness according to EN 59 shall be at least 35. The test methods and acceptance criteria for defining the characteristics of the composite and reinforced thermoplastic materials are given in 5.16. They apply to the load-bearing elements (stiles, SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 8 climbing supports, platforms) of the structure of ladders at time of use. Thermoplastic materials without reinforcements shall not be used for load bearing-elements. The minimum thickness for load-bearing elements made of thermoset plastics and composite material is 2 mm. When using plastics materials, ageing and temperature resistance shall be taken into account. 4.2.4 Timber 4.2.4.1 Different kind of timber For stiles, stanchions, braces, rungs and steps the types of timber to be used shall have a bulk density greater than or equal to 450 kg/m3 for softwoods and 690 kg/m3 for hardwoods. The bulk density shall be measured with a moisture content of 15 %. Examples of suitable species of wood are: Softwood: Fir (Abies alba) Larch (Larix decidua) Spruce (Picea abies) Pine (Pinus sylvestris) Oregon pine (Pseudotsuga menziesii) Hemlock (Tsuga heterophylla) Hardwood: Beech (Fagus sylvatica) Ash (Fraxisnus excelsior) Oak (Quercus robur) Robina (Robinia pseudoacacia) Other types of timber having at least the same quality as the mentioned above are permitted too. The following species of wood are not permitted for the production of ladders: Parana Pine (Araucaria angustifolia O.Ktze.) Hem Fir (Abies magnifica) and Corsican Pine (Pinus nigra Arnold). 4.2.4.2 General requirements The general requirements are given in Table 1. SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 9 Table 1 — General requirements Hard-wood Soft-wood Criteria Requirements X X 1. Wane Only permitted for stiles on one edge for a max. depth of 10 mm with a max. length of 500 mm. It is not permitted for rungs (see Figure 1). X X X 2. Width of annual rings < 4 mm Pitch pine: < 6 mm at a bulk density of 550 kg/m3. For ring porous hardwoods < 1 mm not permitted e.g. oak (Quercus sp.), ash (Fraxinus sp.) robinia (Robinia sp.). X X 3. Slope of annual rings A deviation of the slope of annual rings from the longitudinal edges of the wood of 100 mm per 1 000 mm maximum is admissible (see Figure 2). Local deviation e. g at knot positions, are neglected. X X 4. Shakes
— splitsa not permitted
— checksa < 100 mm length
Lightning/frost shakes, Ring shake not permitted
5. Colour
X Blue stain Permitted
X Red streakes permitted up to 25 % of the surface
X Red rot, brown rot not permitted X
Red heart of beech, brown heart of ash Permitted X
Doty wood not permitted X X 6. Reaction wood admissible until 1/5 of the cross section or of the surface X X 7. Pith not permitted X
8. Defects caused by insects not permitted X X 9. Mistletoe traces not permitted
X 10. Resin pockets
not continuous permitted until 4 mm width and 1,5 × width of the stiles (see Figure 3)
Continuous not permitted X X 11. Spiral grain A deviation of the grain direction from the longitudinal edges of the wood of not more than 50 mm per 1 000 mm, measured either with the help of shrinkage shakes or the scratching method is admissible (see Figure 4). The measurement is to be carried out in two faces perpendicular to each other. The largest deviation is decisive. In the case of rungs and steps, the grain ends, with the exception of knots, shall be at the rung or step ends. a Definitions see EN 844-9:1997 SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 10
Dimensions in millimetres
Figure 1 — Admissible wane Dimensions in millimetres
Figure 2 — Admissible deviation of the slope of annual rings to the longitudinal edges Dimensions in millimetres
Figure 3 — Admissible resin pockets Dimensions in millimetres
Figure 4 — Admissible deviation of the grain direction related to the longitudinal edges
(spiral grain) SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 11 4.2.4.3 Knots 4.2.4.3.1 Knots in stiles and supporting elements Traversing splay knots1) are not permitted on any section of stiles or supporting elements (see Figure 5).
Figure 5 — Inadmissible knot Pin knots2) (including black pin knots) with a diameter of less than or equal to 5 mm are permitted. In the upper and lower third of the stile or supporting element, one sound, intergrown knot1), of diameter d, less than or equal to 0,2 × b (the width of the stile) is permitted per metre. The diameter of the knot is measured in accordance with EN 1310. The knot shall be a minimum of 10 mm from the edges of the stile or supporting element and a minimum of 50 mm from any rung holes, tenons and milled recesses for treads. (see Figure 6). Dimensions in millimetres
Figure 6 — Admissible knot For ladders made of laminated wood the above mentioned number, size and position of knots are allowed over the total length of the ladder. 4.2.4.3.2 Knots in rungs, steps, braces Intergrown pin knots up to a maximum diameter of 3 mm are admissible. 4.2.4.4 Moisture content (Related to the kiln-dry weight) at time of manufacture The moisture content shall be determined by means of hygrometer; in critical or referee cases in accordance with the oven-dry method. The moisture content of the wood is to be chosen according to the equilibrium moisture content resulting from open air drying, normally in Europe 12 % to 20 %.
1) Definitions see EN 844-9:1997 2) Pin knots are knots having approximately a circular cross section SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 12 The moisture content of the rungs and steps shall be lower than that of the stiles at time of production. 4.2.4.5 Laminated wood a) Finger jointed wood Finger jointed wood shall be in accordance with EN 385. The result of the bending test of the finger jointing shall be in accordance with EN 385 and EN 408. The result of this test shall be in minimum 35 N/mm. b) Laminated wood The use of laminated wood is accepted if the following requirements are satisfied: — The wood used conforms with the requirements of 4.2.4.1 to 4.2.4.4 inclusive. — The test of adhesive lines integrity and strength in laminated wood shall be in accordance with EN 391:2001, method A or B and EN 392. The result of this test shall be in accordance of the requirements on EN 386:2001, Table 1 and Table 2. 4.2.4.6 Adhesives Adhesives shall conform with the following requirements: For connection stile — rung: Requirement according to EN 204, class D3; For laminated wood: Requirement according to EN 301, type 1 or EN 204, D4. 4.3 Design !The design shall seek to minimize the existence of shearing and squeeze points and where they do exist to minimize the shearing and squeezing effects as far as practicable." NOTE Shear or squeeze points exist if the distance between two accessible parts relative to each other is less than 18 mm and more than 7 mm in any position during movement (see EN 581-1). All connections should be durable and have a strength corresponding to the strain (see also Clause 5). The connections should be designed in a manner that arising notch tensions remain low. Screws and nuts shall be secured against loosening, e.g. by means of self locking or mechanically locked safety devices. Nails are allowed only if their function is related to the production process, e.g. fixation during the drying of glues. Welding of joints is permitted if welding procedures and welding personnel are suitable. EN ISO 14731 and
EN ISO 3834-1 to EN ISO 3834-4 have to be observed. 4.4 Surface finish In order to avoid injuries, accessible edges, corners, and protruding parts shall be free of burrs, for example chamfered or rounded. Metal parts susceptible to corrosion shall be protected by means of a paint coating or other coating. Under normal conditions aluminium alloys are not susceptible to corrosion. Wooden parts shall be smoothed and coated on all sides. The coating shall be transparent and permeable to water vapour. SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 13 4.5 Hinges (turning points) Hinges shall connect the legs of the standing rung ladders and the standing step ladders durably. Hinges shall be designed in such a manner that no abutment of the ladder parts over the hinges is formed during use of the ladder. The hinge pin shall be secured against unintentional loosening. Pins shall have at least the same strength as M 6 (5,3 mm) pins of steel 8.8. If the pin has several shearing points (piano hinge) there is no restriction as to the hinge pin diameter. The hinges shall satisfy the tests according to 5.8. 4.6 Opening restraints The legs of the standing ladders shall be prevented from opening beyond the normal use configuration by means of opening restraints. If chains are used, all chain links with the exception of the first and the last one shall be free to move. The opening restraints shall satisfy the tests according to 5.8. 4.7 Rungs/steps/platforms Rungs, steps and platforms made of metal or plastics shall have a textured surface on the working face to reduce slipping. The contact surface of the coverings shall adhere firmly to the rungs or steps. Rungs and steps shall be firmly and durably connected to the stiles. Wooden rungs shall be tenoned and mortised into the stiles and glued and wedged in the case of through tenon construction (see examples in Figure 7, 8 and 9). The minimum dimensions of wooden rungs are specified in Figure 7. Dimensions in millimetres
Key 1 stile 2 rung Figure 7 — Example of a concealed joint SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 14
Key 1 stile 2 rung Figure 8 — Example of an open joint
Key 1 stile 2 rung Figure 9 — Example of a concealed joint Round rungs shall have a diameter greater than or equal to 25 mm. The top surface of flat standing surfaces shall have an angle less than or equal to 25° to the horizontal. For leaning ladders the angle related to the stile shall be 65° to 90° for rungs and 60° to 70° for steps. Rungs/steps/platforms shall satisfy the tests according to 5.6 and 5.7. 4.8 Platform If the topmost walking surface of a standing ladder is designed as a foldable platform, the latter shall be lifted up by a device when the ladder is folded. The platform shall satisfy the kick-up test according to 5.10. 4.9 #Ladder feet and anti-skid devices$ Bottom ends of the ladder shall be slip resistant. # NOTE A test for the base slip resistance of leaning ladders is contained in 5.18.$ SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 15 4.10 Extending and sectional ladders 4.10.1 Rung/step hooks/locking devices The ladder parts of push-up extension ladders shall be secured from unintentional closing and separation in the position of use. All sectional and extending ladders shall be fitted with a locking device to keep the ladders hooks engaged on the rung during use. It is the choice of the manufacturer whether the operation of the locking device is manual or automatic. The locking device shall be capable of supporting the weight of the lower parts of the ladder. Locking devices on rope-operated extending ladders shall reliably ensure a safe catch. The rung/step hooks of rope-operated extension ladders shall be designed in such a way that the upper ladder parts cannot fall down by more than one rung per ladder part if the rope loosens or breaks. This safety requirement shall apply both when the ladder is vertical and in the position of use. During use of the ladder the rungs overlapping one another shall be in the same plane perpendicular to the stiles or in one horizontal plane or in any other plane between these. 4.10.2 Ropes Ropes for extending ladders shall have a minimum strength of 4 000 N. Hand operated ropes shall have a minimum diameter of 8 mm. Synthetic ropes shall be stabilized against ultra violet light. 5 Testing 5.1 General For all tests, unless otherwise stated in the particular test, the following tolerances apply: — ± 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. 5.2 #Strength test for all ladders$ #The test shall be carried out on the complete ladder (see Figure 10). In the case of an extending ladder, the test shall be carried out with the ladder fully extended. In the case of a combination ladder, the test shall be carried out with the ladder fully extended in all of its usable configurations. In the case of standing ladders the test shall be carried out with the ladder fully extended in the position of use. In the case of sectional ladders the test shall be carried out with the ladder at full length with all permitted pieces. Where the ascendable side of the ladder cannot be determined by the construction of the product, it shall be tested twice. For the test on the second side a new ladder shall be used. Prior to carrying out the SIST EN 131-2:2010+A2:2017
EN 131-2:2010+A2:2017 (E) 16 test on the second side of the new ladder, it shall be subjected to all of the preceding tests in the test sequence given in Table A.1. Ladders with separately extending stiles shall be tested with their stiles in the least favourable position. 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, 4.2.1, General. Erect the ladder in its position of use at the maximum extension. Leaning ladders shall be erected at (65 ± 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.
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