BS EN 12811-1:2003

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 General requirements
6 Requirements for structural design
7 Product manual
8 Instruction manual
9 Work on site
10 Structural design
Annex A (informative) - Wind loads on clad working scaffolds
Annex B (normative) - Base jacks; data for calculation
Annex C (normative) - Characteristic values of the resistances
        for couplers
Annex D (Informative) - National A-deviations
Bibliography
National annex NA (informative) - Summary of major points
National annex NB (informative) - Requirements unique to this
                  standard or covered in less detail in BS 5973
                  (withdrawn)
National annex NC (informative) - Aspects of structural design
                  covered by this standard but not by BS 5973
National bibliography

Defines performance requirements and methods of structural and general design for access and working scaffolds, referred to from hereon as working scaffolds.

This European Standard specifies performance requirements and methods of structural and general design for access and working scaffolds, referred to from hereon as working scaffolds. Requirements given are for scaffold structures, which rely on the adjacent structures for stability. In general these requirements also apply to other types of working scaffolds. Normal requirements are set down, but there is also provision for special cases.

This European Standard also specifies structural design rules when certain materials are used and general rules for prefabricated equipment.

The standard excludes:

• platforms suspended by ropes, whether fixed or movable;

• horizontally movable platforms including Mobile Access Towers (MAT);

• power-operated platforms;

• scaffolds used as protection for roof work;

• temporary roofs.

NOTE 1 Most working scaffolds are formed from prefabricated components or from tubes and couplers. Some examples of working scaffolds are façade scaffolds, static towers and birdcage scaffolds, but details are not given for all of these.

NOTE 2 Falsework and shoring may be made of the structural components described in this standard, but are not working scaffolds.

NOTE 3 Particular requirements for façade scaffolds made of prefabricated components are specified in EN 12810 -1 and EN 12810-2.