Utility poles stacked in lumber yard.
Pole materials Steel utility pole in Darwin, Australia. Most utility poles are made of wood, pressure-treated with some type of preservative for protection against rot, fungi and insects. Southern yellow pine is the most widely used species in the United States; however, many species of long straight trees are used to make utility poles, including Douglas-fir, Jack pine, lodgepole pine, western red cedar and Pacific silver fir. Traditionally the preservative used was creosote, but due to environmental concerns, alternatives such as pentachlorophenol, copper naphthenate and borates are becoming widespread in the For over 100 years, the American Wood Protection Association (AWPA) has developed the standards for preserving wood utility poles. Despite the preservatives, wood poles decay and have a life of approximately 25 to 50 years depending on climate and soil conditions, therefore requiring regular inspection and remedial preservative treatments.[3][4][5] Other common utility pole materials are steel and concrete, with composites (such as fiberglass) also becoming more prevalent. One particular patented utility pole variant used in Australia is the Stobie pole, made up of two vertical steel posts with a slab of concrete between them.
Size: 5120px × 3401px
Location: Fairport, NY USA
Photo credit: © Peter Steiner / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: carry, communication, electricity, energy, horizontal, lumber, municipal, piles, pole, poles, power, preserved, pressure, rack, stacked, storage, telephone, treated, tree, trunks, utility
