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The "quarter" system of reference is a traditional North American lumber industry nomenclature used specifically to indicate the thickness of rough sawn hardwood lumber. In rough-sawn lumber it immediately clarifies that the lumber is not yet milled, avoiding confusion with milled dimension lumber which is measured as actual thickness after ...
Shiplap is either rough-sawn 25 mm (1 in) or milled 19 mm (3 ⁄ 4 in) pine or similarly inexpensive wood between 76 and 254 mm (3 and 10 in) wide with a 9.5–12.7 mm (3 ⁄ 8 – 1 ⁄ 2 in) rabbet on opposite sides of each edge. [1] The rabbet allows the boards to overlap in this area.
To deal with the increasingly limited availability of timber resources, the Division of Forestry was established in 1885, and in 1891 the Forest Reserve Act passed, setting aside large tracts of forest as federal land. Loggers were forced to make already cut lands productive again, and the reforesting of timberlands became integral to the industry.
This was a much quicker method of construction, but it required the use of sawn and dressed timber, and nails. [52] Slabs were sometimes chamfered at one or both ends to fit into the mortises. Each method took more time and labour, and used more material, but produced a progressively more sophisticated and permanent structure.
Quarter sawing or quartersawing is a woodworking process that produces quarter-sawn or quarter-cut boards in the rip cutting of logs into lumber. The resulting lumber can also be called radially-sawn or simply quartered .
2. A timber situated between a post and a beam to increase the bearing or shorten the span. bolt A piece of log cut to a specific length, usually a short length from which products such as shingles are split or cut. Sometimes also called a billet or round. bow saw. Also simply called a bow. brace
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