Sheave diameter not less than 15 times rope diameter. Design based on minimum breaking load or round strand equal lay 6 x 24 to 6 x 41 wire rope with independent wire rope core. Materials, heat treatment, head fittings, bedset, sheaves, proof load, examination, marking, certificate. Appendices giving typical head fittings, 220 scale of proof loads.Cross References: BS 302*BS 350*BS 408*BS 592*BS 825*BS 919*BS 970*BS 1452*BS 1486:Part 1*BS 1610*BS 1936*BS 2789*BS 2903*BS 3017*BS 3032*BS 3100*BS 3317*BS 3551*BS 4018*PD 5686*