BS 4875-1:1985

Foreword
Committees responsible
Methods
1 Scope
2 Principle
3 General requirements for tests
4 Inspection before and after testing
5 Apparatus
6 Determination of seat and back loading points
7 Procedures
8 Interpretation of results
9 Test report
Appendix
A Explanation of furniture test levels
Tables
1 Test data (purpose of each test)
2 Summary of test procedures
3 Relationship of test levels to use of furniture
4 Specific applications of furniture in relation to
    test levels
Figures
1 Loading point template
2 Position of loading point template
3 Loading surface curves for chair seat and back
    loading template
4 Seat loading pad (plan and side elevations)
5 Smaller seat loading pad
6 Back loading pad
7 Impactor
8 Impact hammer
9 Seat static load test
10 Back static load test with flexibility assessment
11 Arm and wing sideways static load test
12 Arm downwards static load test
13 Seat fatigue test
14 Back fatigue test
15 Leg static load tests
16 Diagonal base test
17 Seat impact test
18 Back impact test
19 Arm impact test
20 Drop test

Applicable to upright chairs, easy chairs, stools, pouffes and tilting and reclining chairs. Specifies five test levels and gives guidance on types of use to which each level is applicable.