UNI EN 13331-1 : 2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Designation
6 Materials
   6.1 General
   6.2 Fasteners
   6.3 Minimum fracture elongation of cast iron
7 Requirements
   7.1 General
   7.2 Minimum characteristic system resistance
   7.3 Deflection
   7.4 Attachment points for extracting, handling, pulling
       and connecting
   7.5 Struts
   7.6 Strut to panel or slide rail connection
   7.7 Panels
8 Assessment
9 Instruction manual
   9.1 General
   9.2 Principle contents
10 Marking
11 Conformity
   11.1 Declaration of conformity
   11.2 Evaluation of conformity
Annex A (normative) Partial safety factors
Annex B (informative) Relationship between loads and
        resistance
Annex C (informative) Assessment monogram for a trench
        lining system
Annex D (informative) Explanation of 'cut and lower'
        techniques
Bibliography

Gives requirements for metallic trench lining systems assembled completely from purpose made prefabricated components. Includes material, constructional and structural requirements