✨ Technical Standards for Galvanized-Steel-Wire Ropes
Table No. 20.—Galvanized-steel-wire Ropes.
TABLE OF BREAKING-LOADS AND CORRESPONDING SAFE-WORKING LOADS FOR GALVANIZED-STEEL-WIRE ROPES OF HAWSER BASIC QUALITY, USED FOR SINGLE WHIPS, SINGLE STROPS, OR LONG-EYED SNOTTERS, AND FOR OTHER SIMILAR CASES WHERE THE LOAD IS CARRIED ON A SINGLE PART.
(Tensile strength of wires, 85-95 tons per square inch.)
| Size of Rope. | Flexible. | Special Flexible. | Special Flexible. |
|---|---|---|---|
| Circumference, in Inches. | Diameter, in Inches (approx.). | Construction.—Six Strands of 12 Wires each. | Construction.—Six Strands of 24 Wires each. |
| Actual Breaking-load, in Tons. | Working-load, in Tons, &c. | ||
| 1 | 5/16 | 2·0 | T. cwt. qr. lb. |
| 1¼ | 13/32 | 3·1 | 0 5 2 24 |
| 1½ | 15/32 | 4·8 | 0 8 3 12 |
| 1¾ | 9/16 | 6·4 | 0 13 2 24 |
| 2 | 5/8 | 8·3 | 0 18 1 4 |
| 2¼ | 23/32 | 10·8 | 1 3 2 24 |
| 2½ | 13/16 | 13·2 | 1 10 3 12 |
| 2¾ | 7/8 | 15·2 | 1 17 2 24 |
| 3 | 15/16 | 18·6 | 2 3 1 20 |
| 3¼ | 17/16 | 21·7 | 2 13 0 18 |
| 3½ | 11/8 | 25·7 | 3 2 0 0 |
| 3¾ | 15/16 | 29·3 | 3 13 1 20 |
| 4 | 19/32 | 33·2 | 4 3 2 24 |
| 4¼ | 11/16 | 36·4 | 4 14 3 12 |
| 4½ | 17/16 | 43·3 | 5 4 0 0 |
| 4¾ | 11/2 | 47·0 | 5 13 2 24 |
| 5 | 119/32 | 52·8 | 6 3 2 24 |
| 5¼ | 11/16 | 6 14 1 4 | |
| 5½ | 13/16 | ||
| 5¾ | 15/16 | ||
| 6 | 129/32 | ||
| 6¼ | 2 | ||
| 6½ | 23/32 | ||
| 6¾ | 25/32 | ||
| 7 | 27/32 | ||
| 7¼ | 29/32 | ||
| 8 | 217/32 |
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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 galvanized-steel-wire ropes
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