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Steel transmission structures and catenary bridges. (1914)

Archbold-Brady Co. · Archbold-Brady Co. · leaf 19

An illustration from Steel transmission structures and catenary bridges., 1914, leaf 19 — . M. alumi-num with weather-proof insulation over2 in. in diameter. The voltages varyfrom 500 to 0,600 volts on the differentcircuits; spans are from 75 to 100 ft. A FRAMES FOR HEAVY INDUSTRIAL LINES IN NEW YORK AND PENNSYLVANIA The upper illustration shows alit, 64-ft. Tower on the 4,200 volt…

Bridges · Electric transmission towers · Steel electrical utility towers · Utilities

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