✨ Technical Standards Tables
Table No. 21.—Black-wire-rope Slings.
TABLE OF SAFE-WORKING LOADS FOR BLACK-WIRE-ROPE SLINGS ON WHICH THE LOAD IS CARRIED ON TWO PARTS OR LEGS OF THE SLING, AND MADE OF ROPE HAVING THE BREAKING-LOAD SPECIFIED IN APPENDIX II.
Safe-working Loads for various Distances between Legs.
| Size of Rope. | Legs Parallel. | B = L. |
|---|---|---|
| Circumference, in Inches. | Diameter, in Inches (approximate). | Strands and Wires 6/19. |
| Working-load, in Tons, &c. | Working-load, in Pounds. | |
| 1 | 5/16 | T. cwt. qr. lb. |
| 1¼ | 13/32 | 0 17 0 16 |
| 1½ | 15/32 | 1 6 3 12 |
| 1¾ | 9/16 | 1 18 1 4 |
| 2 | 5/8 | 2 12 0 0 |
| 2¼ | 23/32 | 3 10 3 12 |
| 2½ | 13/16 | 4 9 0 16 |
| 2¾ | 7/8 | 5 9 0 16 |
| 3 | 15/16 | 6 10 3 12 |
| 3¼ | 11/32 | 8 5 0 16 |
| 3½ | 11/8 | 9 12 0 0 |
| 3¾ | 13/16 | 11 6 1 4 |
| 4 | 19/32 | 12 17 2 24 |
| 4¼ | 11/16 | 14 10 3 12 |
| 4½ | 17/16 | 16 6 1 4 |
| 4¾ | 11/2 | 18 11 1 20 |
| 5 | 119/32 | 20 10 3 12 |
| 5¼ | 111/16 | 22 12 2 8 |
| 5½ | 13/4 | 25 5 2 24 |
| 5¾ | 127/32 | 27 11 1 20 |
| 6 | 129/32 | 29 19 1 20 |
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VUW Te Waharoa —
NZ Gazette 1935, No 49
NZLII —
NZ Gazette 1935, No 49
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Safe-working loads for black-wire-rope slings
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