New Zealand Gazette – 1927 – No. 30

Page 1506

✨ Safe Working Loads for Fibre Ropes

1506
THE NEW ZEALAND GAZETTE.
No. 80

Table No. 21.—Fibre-rope Yard-arms and Coal-whips (Ordinary Grade).

TABLE OF SAFE-WORKING LOADS FOR ORDINARY-GRADE ROUND FIBRE ROPES
WHEN NEW AND WHEN USED FOR YARD-ARMS OR COAL-WHIPS, AND
WHEN THE LOAD IS CARRIED ON A SINGLE PART (DIAGRAM No. 9).
(Ropes to be closely spun and not tarred.)

Size of Rope.					Size of Rope.
Circumference, in Inches.	Diameter, in Inches (approximate).	Breaking-load, in Pounds.	Working-load, in Tons, &c.	Working-load, in Pounds.	Circumference, in Inches.	Diameter, in Inches.	Breaking-load, in Pounds.	Working-load, in Tons, &c.	Working-load, in Pounds.
1¾	9/16	2,466	T. cwt. qr. lb.	411	3½	11/8	9,882	0 14 2 23	1,647
2	5/8	3,222	0 3 2 19	537	3¾	13/16	11,340	0 16 3 14	1,890
2¼	23/32	4,086	0 4 3 5	681	4	19/32	12,906	0 19 0 23	2,151
2½	13/16	5,040	0 6 0 9	840	4¼	111/32	14,565	1 1 2 19	2,427
2¾	7/8	6,102	0 7 2 0	1,017	4½	17/16	16,326	1 4 1 5	2,721
3	15/16	7,254	0 9 0 9	1,209	4¾	11/2	18,195	1 7 0 8	3,032
3¼	11/32	8,514	0 10 3 5	1,419	5	119/32	20,160	1 10 0 0	3,360

Table No. 22.—Fibre-rope Yard-arms and Coal-whips (Higher Grade).

TABLE OF SAFE-WORKING LOADS FOR HIGHER-GRADE ROUND FIBRE ROPES
WHEN NEW AND WHEN USED FOR YARD-ARMS OR COAL-WHIPS, AND
WHEN THE LOAD IS CARRIED ON A SINGLE PART (DIAGRAM No. 9).
(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.					Size of Rope.
Circumference, in Inches.	Diameter, in Inches (approximate).	Breaking-load, in Pounds.	Working-load, in Tons, &c.	Working-load, in Pounds.	Circumference, in Inches.	Diameter, in Inches (approximate).	Breaking-load, in Pounds.	Working-load, in Tons, &c.	Working-load, in Pounds.
1¾	9/16	3,082	T. cwt. qr. lb.	514	3½	11/8	12,352	0 18 1 15	2,059
2	5/8	4,027	0 4 2 10	671	3¾	13/16	14,175	1 1 0 10	2,362
2¼	23/32	5,107	0 5 3 27	851	4	19/32	16,132	1 4 0 1	2,689
2½	13/16	6,300	0 7 2 11	1,050	4¼	111/32	18,206	1 7 0 10	3,034
2¾	7/8	7,627	0 9 1 14	1,271	4½	17/16	20,407	1 10 1 13	3,401
3	15/16	9,067	0 11 1 11	1,511	4¾	11/2	22,744	1 13 3 10	3,790
3¼	11/32	10,642	0 13 1 27	1,774	5	119/32	25,200	1 17 2 0	4,200

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

Domain🏗️ Infrastructure & Public Works
KeywordsFibre rope, Safe working loads, Yard-arms, Coal-whips, Construction specifications, Load tables

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