New Zealand Gazette – 1927 – No. 48

Page 2396

✨ Electrical Supply Regulations



2396

THE NEW ZEALAND GAZETTE.

[No. 4

TABLE XI.-BARE GALVANIZED IRON.

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

Constants.-Coefficient of thermal expansion = 6⋅8 × 10−6 per degree Fahrenheit; maximum allowable stress = 22,500 lb. per square inch; modulus of elasticity = 26 × 106 lb. per square inch.

(A.) 1/⋅128 in. (10 S.W.G.).

Constants.-Area, 0⋅01287 sq. in.; diameter, 0⋅128 in.; loading factor, 4⋅518; maximum tension in conductor, 290 lb.; weight, 0⋅0436 lb. per foot.

Span. Datum. Degrees Fahrenheit above Datum.
0. 20.
Ten. Sag.
Ft. lb. Ft.in.
... 180 131
... 220 102
... 260 88
... 300 80
... 340 76
... 380 73

(B.) 1/⋅160 in. (8 S.W.G.).

Constants.-Area, 0⋅02012 sq. in.; diameter, 0⋅160 in.; loading factor, 3⋅670; maximum tension in conductor, 453 lb.; weight, 0⋅068 lb. per foot.

Span. Datum. Degrees Fahrenheit above Datum.
0. 20.
Ten. Sag.
Ft. lb. Ft.in.
... 180 280
... 220 227
... 260 192
... 300 171
... 340 158
... 380 149

F. D. THOMSON,

Clerk of the Executive Council.



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

🏗️ Infrastructure & Public Works
Regulations, Electrical Supply, Public Works Act, Inspections, Fees, Compliance, Dangerous Lines, Penalties, Tables, Constants, Span, Tension, Sag
  • F. D. Thomson, Clerk of the Executive Council