King, Charles A. (Charles Albert), b. 1865 · New York, Cincinnati [etc.] American book company · leaf 111
RR to anyangle of plate; hoppers of any angle may be cut by the samemethod. A purlin may be cut by using the steel square, if themethod illustrated in Fig. 89 is followed. Any flare ofpurlin or hopper may be cut by this method. The flare of 96 CONSTRUCTIVE CARPENTRY the purlin or hopper should be… … Fig. 89. — Second Method of layingOUT Purlins and Hoppers. The diagram may be applied by the steel square by usingthe following formulas: — Formula 28. F =W on Bl, R on To. To. = F. Formula 29. B = Y on Bl, R on To. To. = B. Formula 30. M = Z on Bl,, Y on To. To. = M. In Fig. 90 is illustrated a…
Carpentry
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