Kidder, Frank E. (Frank Eugene), 1859-1905, Nolan, Thomas, 1857-1926 · New York : W.T. Comstock · leaf 455
51314 9 inchesIII13 The breadth or thickness of compound beams should be not lessthan two-fifths of the depth. The number of keys required is notaffected hy the length or breadth of the beam, if the beam is figuredfor the full safe load. In spacing the keys (Fig. 489) they should not be closer than… … ^ ^^i-BOLT^.,- A ELEVATION OF 20BE:AM.
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