Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 164
s, or floor-joists, are disposed as is shown inFig. 200. Where strength is the principal object, this mannerof disposing the floor-joists is far preferable; as experiments haveproved that, with the same quantity of material, single-joistedfloors are much stronger than either double or framed… … Fig. 200. 12 inches. jRz^ie.—Divide the square of the length in feet, bythe breadth in inches; and the cube-root of the quotient, multi-pUed by 2-2 for pine, or 2-3 for oak, will give the depth in inches.Example.—What should be the depth of floor-joists, having abearing of 12 feet and a thickness…
Carpentry · Architecture
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