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.).
1¹/₈ T. cwt. qr. lb. 1 9 1 18 3,294 1⁷/₁₆ T. cwt. qr. lb. 2 8 2 10 5,442
1³/₁₆ 1 13 3 0 3,780 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
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.).
2³/₃₂ T. cwt. qr. lb. 0 15 0 22 1,702 1³/₁₆ T. cwt. qr. lb. 2 2 0 20 4,724
1³/₁₆ 0 18 3 0 2,100 4 1⁹/₃₂ 2 8 0 2 5,378
7/₈ 1 2 2 22 2,542 1¹¹/₃₂ 2 14 0 20 6,068
3 1⁵/₁₆ 1 6 3 26 3,022 1⁷/₁₆ 3 0 2 26 6,802
1¹/₃₂ 1 11 2 20 3,548 1¹/₂ 3 7 2 20 7,580
1¹/₈ 1 16 3 2 4,118 5 1¹⁹/₃₂ 3 15 0 0 8,400

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🏗️ Safe-working loads for fibre-rope yard-arms and coal-whips (continued from previous page)

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Fibre rope, Safe working loads, Yard-arms, Coal-whips, Construction specifications, Load tables