Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 148
he timbers is not taken into con-sideration.) 250.—Suppose that the two struts, B and B, {Fig. 185,) wererafters of a roof, and that instead of the blocks, A and A, the wallsof a building were the supports : then, to prevent the walls frombeing thrown over by the thrust of B and B, it would be… … Fi^. 186. The horizontal strains on the tie-beam, tending to pull it asunderin the direction of its length, may be measured at the foot of the 134 AMERICAN HOUSE-CARPENTER. rafter, as was shown at Fig. 185; but it can be more readilyand as accurately measured, by drawing from/and e horizontallines…
Carpentry · Architecture
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