Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 27
n does heartwood. Checks also are due to the uneven shrinkage of timber. In anylog there is a chance for the wood to shrink in two directions — alone:the radial lines following the direction of the medullary rays, andaround the circumference of the log, following the direction of theannual rings.… … Fig. 8. Cracks Caused by Shrinkage. the ether, the log must crack around the outside as shown in Fig. 8.This cracking is called checking, and is likely to take jjlace. In timber which has been pre-pared for the market it showsitself in the form of crackswhich extend along the facesof solid square…
Architecture · Building · Carpentry
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