BS 490-2:1975

Co-operating organizations
Foreword
Specification
1 Scope
2 References
3 Designation
4 Construction
5 Fabric
6 Lengths
7 Widths
8 Covers (if required)
9 Thickness of cover
10 Transverse joints in multi-ply type belting
11 Longitudinal joints in multi-ply type belting
12 Freedom from defects
13 Tolerance on belt thickness across the width
14 Elongation
15 Full thickness tensile strength
16 Adhesion
17 Punching or drilling
18 Marking
19 Sampling and testing
Appendices
A Recommendations for the minimum grade and thickness
    of rubber covers
B Method of determining the tensile strength and
    elongation at break of the rubber cover
C Method of measuring the thickness of belting and
    cover across the belting width
D Determination of full thickness tensile strength and
    elongation
E Determination of adhesion
F Information which should be supplied by the
    purchaser with enquiry or order
Tables
1 Preferred widths of elevator belting
2 Non-preferred widths for use as replacement belting
    in existing installations
3 Tolerances on widths
4 Properties of rubber cover
5 Tolerance on cover thickness
6 Maximum number of longitudinal joints
7 Full thickness designated tensile strength
8 Adhesion requirements
9 Number of samples
Figures
1 Example of drawing showing details of bolt holes
2 Measurement of thickness
3 Line for cutting belting to measure thickness by the
    optical method
4 Positions of measurement of cover thickness at the
    knuckle nearest to the marks
5 Single compartment grips
6 Double compartment grips
7 Tensile test piece
8 Cross section of die