. Electric railway journal . s ofthis kind of timber. Preservative treatment either by im-pregnation or painting offers asolution for prolonging the lifeand service of poles to be setin the future, but the constantrenewals of old poles whichwere put in place before thevalue of preservative treatmentwas fully realized require enor-mous quantities of poles eachyear. It has been estimatedthat there are 50,000,000 woodenpoles in use by electric com-panies in the United States,which require renewal at therate of 3,500,000 each cost of renewing a pole inplace is much higher than thecost of
. Electric railway journal . s ofthis kind of timber. Preservative treatment either by im-pregnation or painting offers asolution for prolonging the lifeand service of poles to be setin the future, but the constantrenewals of old poles whichwere put in place before thevalue of preservative treatmentwas fully realized require enor-mous quantities of poles eachyear. It has been estimatedthat there are 50,000,000 woodenpoles in use by electric com-panies in the United States,which require renewal at therate of 3,500,000 each cost of renewing a pole inplace is much higher than thecost of setting a new pole,owing to the labor involved inremoving and replacing thewires. Like every other largeelectric company, the Allegheny County Light Company,Pittsburgh, Pa., has expended large sums in renewingpoles which were perfectly sound above the ground line,but which were dangerously decayed below that S. Orr, general superintendent of the company, devisedlast year a simple plan for reinforcing old poles which. Section Through Rein-forced Pole
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