New Zealand Gazette – 1927 – No. 48

Page 2389

✨ Electrical Supply Regulations

JULY 12.] THE NEW ZEALAND GAZETTE 2389

TABLE VIII.--BARE ALUMINIUM.

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

Constants.--Coefficient of thermal expansion = 13·3 × 10⁻⁶ per degree Fahrenheit; maximum allowable stress = 12,000 lb. per square inch; modulus of elasticity = 10 × 10⁶ lb. per square inch.

(A.) 3/·118 in.

Constants.--Area, 0·0328 sq. in.; diameter, 0·236 in.; loading factor, 9·18; maximum tension in conductor, 394 lb.; weight, 0·0392 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.

		20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
180	97	1 8
220	67	3 6
260	57	5 9
300	53	8 4
340	50	11 4
380	48	14 8

(B.) 3/·132 in.

Constants.--Area, 0·0409 sq. in.; diameter, 0·264 in.; loading factor, 8·17; maximum tension in conductor, 491 lb.; weight, 0·0489 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.

		20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
180	169	1 2
220	109	2 9
260	87	4 8
300	78	7 1
340	73	9 8
380	70	12 8

(C.) 3/·144 in.

Constants.--Area, 0·0488 sq. in.; diameter, 0·288 in.; loading factor, 7·49; maximum tension in conductor, 586 lb.; weight, 0·0584 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.

		20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
180	253	0 11
220	164	2 2
260	124	4 0
300	107	6 2
340	99	8 7
380	93	11 3

(D.) 7/·110 in.

Constants.--Area, 0·0666 sq. in.; diameter, 0·330 in.; loading factor, 6·3; maximum tension in conductor, 800 lb.; weight, 0·0796 lb. per foot.

Span.	Datum.	Degrees Fahrenheit above Datum.

		20.
	Ten.	Sag.
Ft.	lb.	Ft. in.
180	472	0 8
220	344	1 4
260	251	2 8
300	202	4 5
340	178	6 6
380	164	8 9

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VUW Te Waharoa — NZ Gazette 1927, No 48

NZLII — NZ Gazette 1927, No 48

The Old Government Buildings (depicted) were completed in 1876 and initially housed the entire Wellington-based civil service as well as the entire New Zealand Cabinet. The Executive Council met there until 1948.

✨ LLM interpretation of page content

🏗️ Electrical Supply Regulations, 1927 (continued) (continued from previous page)

Domain🏗️ Infrastructure & Public Works
KeywordsRegulations, Electrical Supply, Public Works Act, Inspections, Fees, Compliance, Dangerous Lines, Penalties, Tables, Constants, Span, Tension, Sag

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