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The pattern is non consumable and can be reused to produce further sand moulds almost indefinitely. Due to the fact that almost all metals contract or shrink as their temperature falls, casting patterns must be made larger in size than the actual casting they will produce.
Poles, from which these buildings get their name, are natural shaped or round wooden timbers 4 to 12 inches (100 to 300 mm) in diameter. [4] The structural frame of a pole building is made of tree trunks, utility poles, engineered lumber or chemically pressure-treated squared timbers which may be buried in the ground or anchored to a concrete slab.
The tops of the posts are joined to a beam and the spaces between are filled in with natural materials called bousillage or pierrotage. Poteaux-sur-sol (posts on a sill) is a general term for any kind of framing on a sill. However, sometimes it specifically refers to "vertical log construction" like poteaux-en-terre placed on sills with the ...
The strands in PSL are clipped veneer elements having a least dimension of not more than 1 ⁄ 4 inch (6.4 mm) and an average length of at least 300 times this least dimension (around 6 ft or 1.8 m). [1] It is a member of the structural composite lumber (SCL) family of engineered wood products. [1]
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Historically, the nominal dimensions were the size of the green (not dried), rough (unfinished) boards that eventually became smaller finished lumber through drying and planing (to smooth the wood). Today, the standards specify the final finished dimensions and the mill cuts the logs to whatever size it needs to achieve those final dimensions.
Also used to describe log building), corner post construction, post-and-plank, Ständerbohlenbau (German) and skiftesverk (Swedish). This traditional building method is believed to be the predecessor to half-timber construction widely known by its German name fachwerkbau which has wall infill of wattle and daub , brick, or stone.
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