NEN EN 12951 : 2004

Foreword
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Materials
5 Dimensions and design requirements
   5.1 General
   5.2 Dimensions
   5.3 Design
       5.3.1 General design requirements
       5.3.2 Additional design requirements for roof
             ladders type TA
6 Performance requirements
   6.1 Static strength
   6.2 Resistance to torsion
   6.3 Dynamic strength
   6.4 Fire performance
7 Testing
   7.1 Static strength test
       7.1.1 Number of samples
       7.1.2 Test of steps and rungs
       7.1.3 Stile test
       7.1.4 Test of the support and fastening system
   7.2 Torsion test of steps and rungs
   7.3 Dynamic strength test
8 Evaluation of conformity
   8.1 General
   8.2 Type testing
       8.2.1 Initial type testing
       8.2.2 Further type testing
   8.3 Factory production control (FPC)
       8.3.1 General
       8.3.2 Equipment
       8.3.3 Raw materials and components
       8.3.4 Non-conforming products
       8.3.5 Design process
       8.3.6 Product testing and evaluation
9 Instructions for installation and maintenance
10 Designation
11 Marking
12 Figures
Annex ZA (informative) Clauses of this European Standard
         addressing the provisions of the EU Construction
         Products Directive
      ZA.1 Scope and relevant characteristics
      ZA.2 Procedure for attestation of conformity of
           permanently fixed roof ladders
           ZA.2.1 System of attestation of conformity
           ZA.2.2 EC Declaration of conformity
      ZA.3 CE Marking and labelling
Bibliography

Applicable 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.