BS 1254:1981

Foreword
Cooperating organizations
Specification
Section one. General
1. Scope
2. References
3. Definition
4. Types
5. Designation of seats for ordering purposes
6. Informative labelling
7. Marking
Section two. Materials, design and construction
8. General requirements for type 1 and type 2 seats
     and covers
9. Specific requirements for type 1 seats and covers
10. Special requirements for type 2 seats
11. Special requirements for type 2 covers
12. Buffers for type 1 and type 2 seats and covers
13. Hingeing devices for type 1 and type 2 seats and
     covers
Appendices
A. Information to be provided by the purchaser
B. Method of determining the water absorption of type
     2 seats and covers
C. Method of determining the impact resistance of type
     2 seats
D. Method of determining the impact resistance of type
     2 covers
E. Method of determining the rigidity of type 2 seats
F. Method of determining the rigidity of type 2 covers
G. Method of determining the distortion of type 2 seats
     and covers
H. Method of determining staining by type 2 seats and
     covers
J. Method of determining the staining of type 2 seats
     and covers
K. Method of testing the shape of type 2 seats for
     hygienic design
L. Method of determining the surface hardness of type
     2 seats and covers
Tables
1. Dimensions of WC seats
2. Test requirements for type 2 seats
3. Test requirements for type 2 covers
Figures
1. Diagrammatic sketch of seat
2. Apparatus for measuring impact resistance of type
     2 seats
3. Apparatus for measuring impact resistance of type
     2 covers
4. Apparatus for measuring rigidity of seats
5. Apparatus for measuring rigidity of covers
6. Diagram of template