Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 27
oes not seriously impair a piece subjected to a compressivestress, so long as it remains in place, but it greatlyweakens a piece subjected to tension. A knot alwaysspoils the appearance of any wood which is to bepolished. TIMBER IN ITS COMMERCIAL FORM. Conversion of Timber. Timber may be found… … Fig. 10. Knots. timbers. If the log is to be squared off to form but 17 10 CARPENTRY in Fig. 11 one heavy beam, a good rule to follow is to divide the diameterinto three equal parts, and draw perpendiculars to the diameter atthese points, one on each side of the diameter, as shown at A and BThe…
Architecture · Building · Carpentry
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