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Stoplogs are typically long rectangular timber beams or boards that are placed on top of each other and dropped into premade slots inside a weir, gate, or channel. Present day, the process of adding and removing stoplogs is not manual, but done with hydraulic stoplog lifters and hoists. [1] Since the height of the barrier can only be adjusted ...
Chromated copper arsenate ( CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions. It is used to impregnate timber and other wood products, especially those intended for outdoor use, in order to protect them from attack by microbes and insects. Like other copper-based wood preservatives, it ...
Wood drying. Air-drying timber stack. Wood drying (also seasoning lumber or wood seasoning) reduces the moisture content of wood before its use. When the drying is done in a kiln, the product is known as kiln-dried timber or lumber, whereas air drying is the more traditional method. There are two main reasons for drying wood:
A timber cutter's mountain log cabin at the Museum of Folk Architecture and Life in Pyrohiv, Ukraine. A log cabin is a small log house, especially a minimally finished or less architecturally sophisticated structure. Log cabins have an ancient history in Europe, and in America are often associated with first-generation home building by settlers.
Split rail fences were made of easy to split, rot-resistant wood. Traditionally American chestnut was the timber of choice until chestnut blight eliminated this tree. Currently, most split rails are made from cedar. Construction. Logs are typically cut to a length of 10 to 12 feet (3.0 to 3.7 m) and split down the length of the log.
In woodworking, hewing is the process of converting a log from its rounded natural form into lumber (timber) with more or less flat surfaces using primarily an axe. It is an ancient method, and before the advent of the industrial-era type of sawmills, it was a standard way of squaring up wooden beams for timber framing.
A wood mat road in British Columbia, used for temporary access over soft ground. A plank road is a road composed of wooden planks or puncheon logs, as an efficient technology for traversing soft, marshy, or otherwise difficult ground. Plank roads were commonly found in the Canadian province of Ontario as well as the Northeast and Midwest of the ...
The cheval de frise (plural: chevaux de frise [ʃə.vo də fʁiz], " Frisian horses ") was a defensive obstacle, existing in a number of forms, principally as a static anti- cavalry obstacle but also quickly movable to close breaches. The term was also applied to underwater constructions used to prevent the passage of ships or other vessels on ...
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