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The term ″roundpole fence" is somewhat misleading, as the rails between the pairs of uprights are usually split spruce logs. However, the upright poles are always round, young spruce trees with a diameter of 5 to 7 cm. For the diagonals, larger trees with a diameter up to 20 cm were split into four or eight rails of suitable dimensions.
It is also used to reinforce various materials, such as tent poles, pole vault poles, arrows, bows and crossbows, translucent roofing panels, automobile bodies, hockey sticks, surfboards, boat hulls, and paper honeycomb. It has been used for medical purposes in casts. Glass fiber is extensively used for making FRP tanks and vessels. [6] [26]
Simple split-rail fence Log fence with double posts (photo taken in 1938). A split-rail fence, log fence, or buck-and-rail fence (also historically known as a Virginia, zigzag, worm, snake or snake-rail fence due to its meandering layout) is a type of fence constructed in the United States and Canada, and is made out of timber logs, usually split lengthwise into rails and typically used for ...
Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber.The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth.
Composite lumber comes from the manufacturer as a finished product. There is no need to stain, sand, or paint the material. Composite materials usually cost more than lumber, but their long life and low-maintenance requirements could make them more economical in the long run. Most composites also come with a warranty ranging from several years ...
The mechanical slide fence parallel to the rails consists of a series of tensioned wires strung about 10 inches (25 cm) apart on poles. When a rock slide occurs, one or more of the wires may break, allowing heavy weights attached to either end to drop. This triggers the protecting signals to the 'danger' position.
In addition to wood fiber and plastic, WPCs can also contain other ligno-cellulosic and/or inorganic filler materials. WPCs are a subset of a larger category of materials called natural fiber plastic composites (NFPCs), which may contain no cellulose-based fiber fillers such as pulp fibers, peanut hulls, coffee husk, bamboo, straw, digestate, etc.
A utility pole, commonly referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, is a column or post, usually made out of wood or aluminum alloy, [1] used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable ...
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