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Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909) Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 330
h pine on edge and see what it takes to breakit. Instead of 15 cwt., we shall find that it takesno less than 45 cwt. to do so. Or, as the booksput it, the strength of a beam is as the squareof its depth. That means that instead of sajdng,as in B, three times five, we square the three,and say three… … IZ f t = I86 4(<© 5c«vT. X 9inX6jnX6ITTt •S20 __ C^^s 12. 5cwt XSirtXTin X7 f2. ft I96012. = 16375(.--i) Fig. 161. Ultimate Strength of Beams Supported at Both Ends■with Load Concentrated at the Middle. But suppose, further, that instead of thebearings being 12 inches apart the distance be-tween… Architecture · Building
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