New Zealand Gazette – 1935 – No. 65

Page 2530

✨ Engineering Tables

2530
THE NEW ZEALAND GAZETTE.
[No. 65

V.I.R. COPPER—continued.

(C.) 7/·064 in. (7/16 S.W.G.).

Constants.—Area (copper), 0·0225 sq. in.; diameter (covered), 0·359 in.; loading factor, 4·18; maximum tension in conductor, 562 lb.; weight of covered conductor, 0·1328 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180 ..	224	2 5
220 ..	186	4 4
260 ..	168	6 8
300 ..	158	9 5
340 ..	152	12 7
380 ..	148	16 1

(D.) 19/·052 in.

Constants.—Area (copper), 0·0403 sq. in.; diameter (covered), 0·441 in.; loading factor, 3·07; maximum tension in conductor, 1,008 lb.; weight of covered conductor, 0·2278 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180 ..	653	1 5
220 ..	552	2 6
260 ..	482	4 0
300 ..	437	5 10
340 ..	410	8 0
380 ..	391	10 6

(E.) 19/·064 in. (19/16 S.W.G.).

Constants.—Area (copper), 0·0611 sq. in.; diameter (covered), 0·513 in.; loading factor, 3·55; maximum tension in conductor, 1,525 lb.; weight of covered conductor, 0·3285 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180 ..	1191	1 0
220 ..	1069	1 10
260 ..	962	2 11
300 ..	872	4 3
340 ..	809	5 10
380 ..	764	7 9

TABLE VII.—BARE STEEL-CORED ALUMINIUM (1 STEEL 6 ALUMINIUM).

Wind, 18 lb. per square foot of diametral plane.

Constants.—Coefficient of thermal expansion = 10·55 × 10⁻⁶ per degree Fahrenheit; modulus of elasticity = 12·5 × 10⁶ lb. per square inch.

Note.—This table is for use with conductors having a breaking-strength not less than that stated for each size of conductor.

(A.) 7/·0586 in.

Constants.—Area, 0·01888 sq. in.; breaking-strength, 820 lb.; diameter, 0·176 in.; loading factor, 9·317; maximum tension in conductor, 328 lb.; weight, 0·0285 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.
	0.	20.
	Ten.	Sag.
Ft.	lb.	Ft.in.
180 ..	140	0 10
220 ..	83	2 1
260 ..	59	4 1
300 ..	50	6 5
340 ..	45	9 1
380 ..	43	12 0

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VUW Te Waharoa — NZ Gazette 1935, No 65

NZLII — NZ Gazette 1935, No 65

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✨ LLM interpretation of page content

🏗️ V.I.R. Copper Wind Load Tables (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsElectrical Conductors, Wind Load, Sag, Tension, Engineering

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