✨ Construction specifications
May 19.] THE NEW ZEALAND GAZETTE. 1507
Table No. 23.—Fibre-rope Yard-arms, Coal-whips, Span-purchases, and Guys (Ordinary Grade).
TABLE OF SAFE-WORKING LOADS FOR ORDINARY-GRADE ROUND FIBRE ROPES WHEN NEW AND WHEN USED FOR YARD-ARMS, COAL-WHIPS, SPAN CHASES, OR GUYS, AND WHEN THE LOAD IS CARRIED ON TWO PARTS (DIAGRAM No. 10).
(Ropes to be closely spun and not tarred.)
| Size of Rope. | Working-load, in Tons, &c. | Working-load, in Pounds. | Size of Rope. | Working-load, in Tons, &c. | Working-load, in Pounds. | ||
|---|---|---|---|---|---|---|---|
| Circumference, in Inches. | Diameter, in Inches (approx.). | Circumference, in Inches. | Diameter, in Inches (approx.). | ||||
| 3½ | 1¹/₈ | T. cwt. qr. lb. 1 9 1 18 | 3,294 | 4½ | 1⁷/₁₆ | T. cwt. qr. lb. 2 8 2 10 | 5,442 |
| 3¾ | 1³/₁₆ | 1 13 3 0 | 3,780 | 4¾ | 1¹/₂ | 2 14 0 16 | 6,064 |
| 4 | 1⁹/₃₂ | 1 18 1 18 | 4,302 | 5 | 1¹⁹/₃₂ | 3 0 0 0 | 6,720 |
| 4¼ | 1¹¹/₃₂ | 2 3 1 10 | 4,854 |
Table No. 24.—Fibre-rope Yard-arms, Coal-whips, Span-purchases, and Guys (Higher Grade.)
TABLE OF SAFE-WORKING LOADS FOR HIGHER-GRADE ROUND FIBRE ROPES WHEN NEW AND WHEN USED FOR YARD-ARMS, COAL-WHIPS, SPAN-PURCHASES, OR GUYS, AND WHEN THE LOAD IS CARRIED ON TWO PARTS (DIAGRAM No. 10).
(Ropes to be closely spun and not tarred. Grade to be distinguished by a red thread spun into the centre of one strand.)
| Size of Rope. | Working-load, in Tons, &c. | Working-load, in Pounds. | Size of Rope. | Working-load, in Tons, &c. | Working-load, in Pounds. | ||
|---|---|---|---|---|---|---|---|
| Circumference, in Inches. | Diameter, in Inches (approx.). | Circumference, in Inches. | Diameter, in Inches (approx.). | ||||
| 2¼ | 2³/₃₂ | T. cwt. qr. lb. 0 15 0 22 | 1,702 | 3¾ | 1³/₁₆ | T. cwt. qr. lb. 2 2 0 20 | 4,724 |
| 2½ | 1³/₁₆ | 0 18 3 0 | 2,100 | 4 | 1⁹/₃₂ | 2 8 0 2 | 5,378 |
| 2¾ | 7/₈ | 1 2 2 22 | 2,542 | 4¼ | 1¹¹/₃₂ | 2 14 0 20 | 6,068 |
| 3 | 1⁵/₁₆ | 1 6 3 26 | 3,022 | 4½ | 1⁷/₁₆ | 3 0 2 26 | 6,802 |
| 3¼ | 1¹/₃₂ | 1 11 2 20 | 3,548 | 4¾ | 1¹/₂ | 3 7 2 20 | 7,580 |
| 3½ | 1¹/₈ | 1 16 3 2 | 4,118 | 5 | 1¹⁹/₃₂ | 3 15 0 0 | 8,400 |
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VUW Te Waharoa —
NZ Gazette 1927, No 30
NZLII —
NZ Gazette 1927, No 30
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Safe-working loads for fibre-rope yard-arms and coal-whips
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🏗️ Infrastructure & Public WorksFibre rope, Safe working loads, Yard-arms, Coal-whips, Construction specifications, Load tables