Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 55
is stronger than whenonly supported at the ends as 3 is to 2.Some qualities of timber are stronger intension than in compression, whilst othershave just the opposite qualities. Experi-ments show that Dantzig fir is crushedbefore it is torn asunder ; or, in other words,that its ultimate compressive… … Fig. 166.—Heart-shake in Balk. Defects in Balk Timber. Cup-shakes.—These are cracks extendingcircumferentially at one or more places,caused by the separation of the annual rings,as in Figs. 163 and 164. TIMBER, 41 Doatiness.—This is a speckled stain foundin beech, American oak, and other timber,due…
Carpentry · Joinery
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