Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 32
h are old, rather than in young, vig-orous saplings; it is especially to be fearedin hemlock timber. Windshake. The defect known as awindshake is so-called on account ofthe belief that it is caused by the rack-ing and wrenching to which the growing tree is subjected by high winds. It is also… … Section of Log ShowingWindshake 19 10 CARPENTRY of the annual rings. Fig. 5 shows the appearance of a windshakeon the cross section of a log, and this appearance has given rise tothe term cupshake which is sometimes used instead of windshake.The hollow space may extend for a considerable distance…
Architecture · Building
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