A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 347
33. The manner inwhich the annual rings ofgrowth are disposed onthe end section of theplank, has a great influ-ence on its behavior, afterhaving been cut from the log. During the process of sea-soning the lumber, or the drjnng and hardening of its fibersby the evaporation of the natural sap, there… … Fig. 8. particularly, if the process is too rapidly enforced and specialcare is not taken to pile the material so as to allow free cir-culation of air, and at the same time have it stacked so thatits weight will help to keep the boards flat. 34. The cause of this tendency to curl will be…
Architecture · Building
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