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A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. For hardwood flooring, the test usually requires an 80 mm × 150 mm (3 in × 6 in) sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037.
In 2011, Douglas-fir represented 34.2% of US lumber exports, to a total of 1.053 billion board-feet. [42] [13] Douglas-fir timber is used for timber frame construction and timber trusses using traditional joinery, veneer, and flooring due to its strength, hardness and durability. [43]
Mohs hardness of materials (data page) Vickers hardness test; Brinell scale This page was last edited on ...
Douglas-fir (Pseudotsuga menziesii) Coast Douglas-fir (Pseudotsuga menziesii var. menziesii) Rocky Mountain Douglas-fir (Pseudotsuga menziesii var. glauca) European yew (Taxus baccata) Fir (Abies) Balsam fir (Abies balsamea) Silver fir (Abies alba) Noble fir (Abies procera) Pacific silver fir (Abies amabilis) Hemlock (Tsuga) Eastern hemlock ...
A solid wood floor is a floor laid with planks or battens created from a single piece of timber, usually a hardwood. Since wood is hydroscopic (it acquires and loses moisture from the ambient conditions around it) this potential instability effectively limits the length and width of the boards.
Lignum vitae is hard and durable, and is also the densest wood traded (average dried density: ~79 lb/ft 3 or ~1,260 kg/m 3); [4] it will easily sink in water. On the Janka scale of hardness, which measures hardness of woods, lignum vitae ranks highest of the trade woods, with a Janka hardness of 4,390 lbf (compared with Olneya at 3,260 lbf, [5] African blackwood at 2,940 lbf, hickory at 1,820 ...
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