EN 14975:2006+A1:2010
(Main)Loft ladders - Requirements, marking and testing
Loft ladders - Requirements, marking and testing
This European Standard specifies terms and definitions, product requirements and test methods for the construction and performance of loft ladders.
Bodentreppen - Anforderungen, Kennzeichnung und Prüfung
Diese Europäische Norm legt die Begriffe, Produktanforderungen und Prüfverfahren für die Konstruktion und Funktionsfähigkeit von Bodentreppen fest.
Echelles de grenier - Exigences, marquage et essais
La présente Norme européenne spécifie les termes et les définitions applicables aux échelles de grenier et indique les exigences et méthodes d’essai relatives à la construction et aux performances de ces produits.
Lestve - Zahteve, označevanje in preskušanje
Ta evropski standard določa izraze in opredelitve, zahteve za proizvode in preskusne metode za konstrukcijo in delovanje lestev.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bodentreppen - Anforderungen, Kennzeichnung und PrüfungEchelles de grenier - Exigences, marquage et essaisLoft ladders - Requirements, marking and testing97.145LestveLaddersICS:Ta slovenski standard je istoveten z:EN 14975:2006+A1:2010SIST EN 14975:2007+A1:2010en,fr,de01-september-2010SIST EN 14975:2007+A1:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14975:2006+A1
July 2010 ICS 91.060.30 Supersedes EN 14975:2006English Version
Loft ladders - Requirements, marking and testing
Echelles de grenier - Exigences, marquage et essais
Bodentreppen - Anforderungen, Kennzeichnung und Prüfung This European Standard was approved by CEN on 25 November 2006 and includes Amendment 1 approved by CEN on 4 June 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14975:2006+A1:2010: ESIST EN 14975:2007+A1:2010
3.2.1 concertina loft ladder loft ladder with extendable climbing support NOTE See Figure 1.
Figure 1 — Concertina loft ladder 3.2.2 hinged/folding loft ladder loft ladder with hinged or folded climbing support NOTE See Figure 2. SIST EN 14975:2007+A1:2010
Figure 2 — Hinged/folding loft ladder 3.2.3 sliding loft ladder loft ladder with sliding climbing support 3.2.3.1 push-out sliding loft ladder sliding loft ladder with climbing support to be pushed out NOTE See Figure 3. SIST EN 14975:2007+A1:2010
Figure 3 — Push-out sliding loft ladder 3.2.3.2 pull-out sliding loft ladder sliding loft ladder with climbing support to be pulled out NOTE See Figure 4.
Figure 4 — Pull-out sliding loft ladder SIST EN 14975:2007+A1:2010
3.3.1 handrail rail fitted to loft ladder to give user support when climbing or descending loft ladder 3.3.2 trapdoor door giving access to loft or similar point at a higher level NOTE The loft ladder may or may not be attached to the trapdoor. 3.3.3 hinge connecting element between loft ladder or trapdoor and loft or trapdoor casing similar point at a higher level 3.3.4 rung climbing support with a standing surface from front to back of less than 80 mm and more than 20 mm 3.3.5 stile side members to which the rungs, treads or cross-members are fitted 3.3.6 stile hinge connecting element between folding ladder parts 3.3.7 locking device mechanism to prevent unintended sliding out, extending or unfolding of the loft ladder 3.3.8 tread climbing support with a standing surface from front to back equal to or greater than 80 mm 4 Maximum load The requirements are based upon a maximum total load of 150 kg. Loft ladders are designed to be used by one person at a time. 5 Test methods 5.1 General 5.1.1 Tolerances For all tests, unless otherwise stated in the particular test, the following tolerances are permitted as uncertainty of measurement: ± 1 mm for linear measurements; ± 1° for the measurement of angles; SIST EN 14975:2007+A1:2010
Key 1 roller Figure 5 — Static load test 5.3 Fatigue test Set up the ladder at its maximum length (fully extended) and adjust it in accordance with the manufacturer’s instructions, perpendicular to the pivot line of the top hinge. If a catch is fitted to one side only, carry out the test on the side to which the catch is fitted. Apply cyclically a load of 1 500 N, 75 mm from the inside face of one stile 5 000 times at a maximum rate of 1 cycle per second on the central tread or rung. On completion of the test, visually examine the loft ladder. There shall be no structural damage and the ladder shall be capable of being stowed and un-stowed. The residual deflection of the stiles and rungs or treads shall not exceed 20 mm per metre of length. 5.4 Torsion test of rungs or treads A torque of 50 N m shall be applied on the mid-point of the rung or step via a 100 mm wide clamping device. The torque shall be applied alternately 10 times in a clock
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