✨ Technical Standards Tables
Table No. 33.—Double-wire-rope Strops.
TABLE OF BREAKING-LOADS AND CORRESPONDING SAFE-WORKING LOADS FOR DOUBLE STROPS WITH A THIMBLE IN EACH END AND MADE OF BLACK-STEEL-WIRE ROPE OF PATENT IMPROVED PATENT STEEL QUALITY OF THE BREAKING-LOAD SPECIFIED IN TABLE 2.
(Strop loaded as shown in Diagram No. 7.)
| Two Ropes each of Size | Strands and Wires 6/19. | Strands and Wires 6/24. | Strands and Wires 6/37. |
|---|---|---|---|
| Circumference, in Inches. | Diameter, in Inches. | Breaking-load, in Tons. | Working-load, in Tons, &c. |
| 2 | 5/8 | 24·8 | T. cwt. qr. lb. |
| 2¼ | 23/32 | 31·2 | 2 15 0 12 |
| 2½ | 13/16 | 38·2 | 3 9 1 9 |
| 2¾ | 7/8 | 45·8 | 4 4 3 15 |
| 3 | 15/16 | 57·8 | 5 1 3 3 |
| 6 8 1 21 |
Table No. 34.—Double-wire-rope Strops.
TABLE OF BREAKING-LOADS AND CORRESPONDING SAFE-WORKING LOADS FOR DOUBLE STROPS WITH A THIMBLE IN EACH END AND MADE OF GALVANIZED-STEEL-WIRE ROPE OF HAWSER BASIC QUALITY OF THE BREAKING-LOAD SPECIFIED IN TABLE 3.)
(Strop loaded as shown in Diagram No. 7.)
| Two Ropes each of Size | Strands and Wires 6/12. | Strands and Wires 6/24. | Strands and Wires 6/30. |
|---|---|---|---|
| Circumference, in Inches. | Diameter, in Inches. | Breaking-load, in Tons. | Working-load, in Tons, &c. |
| 2 | 5/8 | 16·6 | T. cwt. qr. lb. |
| 2¼ | 23/32 | 21·6 | 1 16 3 16 |
| 2½ | 13/16 | 26·4 | 2 8 0 0 |
| 2¾ | 7/8 | 30·4 | 2 18 2 19 |
| 3 | 15/16 | 37·2 | 3 7 2 6 |
| 4 2 2 18 |
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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 double-wire-rope strops
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