. Cyclopedia of architecture, carpentry, and building; a general reference work ... lasses ofdefects which are caused by the seasoning of thetimber and which have little or nothing to dowith the growth of the tree. Among these arethe actions known as warping and check-ing. Warping. This is the result of the evapora-tion or drying out of the water which is held in^fermat!on*oTa^K°^ the ccU walls of the wood in its natural state, andthe shrinkage which naturally follows. If woodwere perfectly regular in structure, so that the shrinkage couldbe the same in every part, there would be no warping, b
. Cyclopedia of architecture, carpentry, and building; a general reference work ... lasses ofdefects which are caused by the seasoning of thetimber and which have little or nothing to dowith the growth of the tree. Among these arethe actions known as warping and check-ing. Warping. This is the result of the evapora-tion or drying out of the water which is held in^fermat!on*oTa^K°^ the ccU walls of the wood in its natural state, andthe shrinkage which naturally follows. If woodwere perfectly regular in structure, so that the shrinkage couldbe the same in every part, there would be no warping, but wood up of a large number of fibers, the walls of which are of dif-ferent thicknesses in different parts of the tree or log, so that indrying one part shrinks much more than another. Since the woodfibers are in close contact with each other and interlaced, thusmaking the piece of wood rigid, one part can not shrink or swellwithout changing the shape of the whole piece, because the pieceas a whole must adjust itself to the new conditions; consequentlythe timber 22 CARPENTRY 13
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