UNI EN 13761 : 2003

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Dimensions
   4.1 Dimensional requirements
       4.1.1 Seat height [a]
       4.1.2 Seat depth [b]
       4.1.3 Seat width [d]
       4.1.4 Distance between arm rests [r]
   4.2 Determination of reference points
       4.2.1 Point "A"
       4.2.2 Back supporting point "S"
   4.3 Determination of dimensions
       4.3.1 Seat height [a]
       4.3.2 Seat depth [b]
       4.3.3 Seat width [d]
       4.3.4 Distance between arm rests [r]
5 Safety requirements
   5.1 General design requirements
       5.1.1 Corners and edges, trapping, pinching and
             shearing
       5.1.2 Adjusting devices
       5.1.3 Connections
       5.1.4 Avoidance of soiling
   5.2 Stability during use
       5.2.1 Swivelling chairs
       5.2.2 Non swivelling chairs
   5.3 Rolling resistance of the unloaded chair
   5.4 Strength and durability
6 Information for use