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" Ib. per square foot. No addition need be made for a possible accumulation of snow. Every support, if of metal, shall be efficiently connected with earth. "
Transactions of the Canadian Society of Civil Engineers - Page 218
by Canadian Society of Civil Engineers - 1890
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The Electrical Review, Volume 25

1889 - 758 pages
...securely attached to insulators fixed to the supports. The factor of safety for the suspended wires shall be at least 6 and for all other parts of the...12, taking the maximum possible wind pressure at 50 pounds per square foot. No addition need be made for a possible accumulation of snow. 4. Every support,...
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The Electrical Engineer

1889 - 544 pages
...insulators fixed to the supports. The factor of safety for the suspended wires shall be at least six, and for all other parts of the structure at least 12, taking the maximum possible wind pressure at 501b. per square foot. No addition need be made for a possible accumulation of snow. 4. Every support,...
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Public Lighting by Gas and Electricity

William Joseph Dibdin - 1902 - 598 pages
...line, or unequal lengths of span. The factor of safety shall be for aerial lines and suspending wires at least 6, and for all other parts of the structure...12, taking the maximum possible wind pressure at 50 Ib. per square foot. No addition need be made for a possible accumulation of snow. Every support, if...
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Public Lighting by Gas and Electricity

William Joseph Dibdin - 1902 - 620 pages
...line, or unequal lengths of span. The factor of safety shall be for aerial lines and suspending wires at least 6, and for all other parts of the structure...12, taking the maximum possible wind pressure at 50 Ib. per square foot. No addition need be made for a possible accumulation of snow. Every support, if...
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The Law Relating to Electric Lighting, Traction and Power

John Shiress Will - 1903 - 570 pages
...the line, or unequal lengths of span. The of. factor of safety for aerial lines and suspending wires shall be at least 6 and for all other parts of the...12, taking the maximum possible wind pressure at 50 pounds per square foot. No addition need be made for a possible accumulation of snow. Every support,...
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The Law Relating to Electric Lighting, Traction and Power

John Shiress Will - 1903 - 556 pages
...line, or unequal lengths of span. The offactor of safety shall be for aerial lines and suspending wires at least 6, and for all other parts of the structure...12, taking the maximum possible wind pressure at 50 pounds per square foot. No addition need be made for a possible accumulation of snow. Every support,...
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Three-phase Transmission: A Practical Treatise on the Economic Conditions ...

William Brew - 1911 - 206 pages
...overhead lines at least 5, and for wooden poles at least 10, and for iron or steel structures at least 6, taking the maximum possible wind pressure at 50 Ibs. per square foot. No addition need be made for a possible accumulation of snow. 3. Attachment of Overhead Lines. —...
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The Electrical Review, Volume 27

1890 - 830 pages
...•ind the conductors and suspending wires (if any) must be securely attached to insulators fixed to the supports. The factor of safety shall be at least 6,...least 12, taking the maximum possible wind pressure at SO Ibs. per square foot. 6. Every aerial conductor shall be protected by efficient lighting protectors....
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