BS 1105:1981

Cooperating organizations
Foreword
Specification
1 Scope
2 References
3 Definition
4 Classification
5 Manufacture and materials
6 Form and texture
7 Tolerances on length and width
8 Nominal thickness and mass
9 Thermal conductivity
10 Strength test (type A and type B slabs)
11 Impact and load test (type SB slabs)
12 Fire performance
13 Sampling and testing
14 Marking of slabs
15 Manufacturer's certificate
Appendices
A Method of determining chloride ion content
B Method of measuring thickness of slabs
C Method of weighing slabs
D Method of measuring thermal conductivity
E Method of testing strength (types A, B and SB)
F Method of testing for impact and load resistance
    (type SB)
G Sound absorption properties
Tables
1 Nominal thickness and mass of slabs (air-dry)
2 Minimum sound absorption co-efficients for two
    methods of mounting
Figures
1 Rig for testing strength of slabs
2 Typical impact and load test rig: type SB slabs

Specifies the size, mass, strength, impact resistance and thermal conductivity requirements of slabs in 3 types. Type A, intended for non-load bearing applications; Type B, intended to be used for roof construction, and Type SB intended particularly for use in roof construction.