EN 12951:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prefabricated accessories for roofing - Permanently fixed roof ladders - Product specification and test methodsMontažna oprema za prekrivanje streh - Pritrjene strešne lestve - Specifikacija za izdelek in preskusne metodeAccessoires préfabriqués pour couverture - Echelles de couvreur solidement fixées - Spécifications des produits et méthodes d'essaisVorgefertigte Zubehörteile für Dacheindeckungen - Fest installierte Dachleitern - Produktanforderungen und PrüfverfahrenTa slovenski standard je istoveten z:EN 12951:2004SIST EN 12951:2005en97.14591.060.20ICS:SLOVENSKI
STANDARDSIST EN 12951:200501-marec-2005

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12951November 2004ICS 97.140English versionPrefabricated accessories for roofing - Permanently fixed roofladders - Product specification and test methodsAccessoires préfabriqués pour couverture - Echelles decouvreur solidement fixées - Spécifications des produits etméthodes d'essaisVorgefertigte Zubehörteile für Dacheindeckungen - Festinstallierte Dachleitern - Produktanforderungen undPrüfverfahrenThis European Standard was approved by CEN on 18 March 2003.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12951:2004: E

Clauses of this European Standard addressing the provisions of the EU Construction Products Directive.18 ZA.1 Scope and relevant characteristics.18 ZA.2 Procedure for attestation of conformity of permanently fixed roof ladders.19 ZA.2.1 System of attestation of conformity.19

1 Scope
This document applies to permanently fixed ladders made of metal which are permanently installed on the load-bearing construction of pitched roofs and which may be stepped or walked on for purposes of inspection, maintenance and repair of equipment installed above the roof surface.
This document specifies essential dimensions, materials to be used, requirements with respect to the load-bearing capacity, and the extent of testing. This document does not cover walkways, single treads, single steps or roof ladders that are not permanently fixed nor does it cover fire escape ladders. 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 364, Personal protective equipment against falls from a height — Test methods. ISO 1140:1990, Ropes-Polyamide-Specification. 3 Terms, definitions, symbols and abbreviations
For the purposes of this document, the following terms and definitions apply. 3.1 permanently fixed roof ladders
construction with steps or rungs which is permanently installed on a pitched roof 3.2 fastening system combination of elements which fastens the roof ladder to the load-bearing roof construction 3.3 load-bearing roof construction that part of the roof construction which is able to carry potential loads and to transmit them into the building structure 3.4 surface of roof covering highest elevation of roofing materials between the stiles of the roof ladder, smaller elevations (for example, standing seams of sheet metal covered roofs see Figure 1b), being ignored NOTE If the roof covering has wide profiles and the design of the ladder makes it possible to walk with the feet in the profiles, the profiles' bottom may be considered as the surface. 3.5 symbols and abbreviations
a Height of upstands or battens in order to protect people from slipping from ladders d Depth of steps or rungs

y Vertical distance between two steps or rungs (rise of the steps or rungs) PCS Gross calorific potential 4 Materials Permanently fixed roof ladders and their fastening systems shall be made of metal and resistant to corrosion as well as to atmospheric and climatic influences. The materials shall be free from faults and inclusions which may impair their performance abilities. The corrosion resistance shall be at least equivalent to that of hot-dip galvanised steel with a protective layer of 50 µm. Parts of the fastening systems beneath the roof covering may be from timber and shall then be protected against atmospheric and climatic influences. Parts of the fastening system may consist of products for roof coverage. 5 Dimensions and design requirements 5.1 General In the working position all ladders shall be designed for a maximum static load of 150 kg (mass of one person with equipment). Roof ladders shall be categorised as follows: C1: Roof ladders that shall not be used as anchor points for personal protective equipment against falls from a height nor be used for attaching collective protection devices. C2: Roof ladders that may be used as anchor points for personal protective equipment against falls from a height There are two different types of roof ladders: TA: Roof ladders with steps. NOTE 1 Roof ladders with steps should primarily be used on roof surfaces with an inclination of ≥ 10° and < 45°. TB: Roof ladders with rungs. NOTE 2 Roof la
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