Elementary course in woodwork ; designed for use in high and technical schools, with one hundred and thirty-four illustrations, by George Alexander Ross (1901)
Ross, George Alexander · Chicago, New York, A. Flanagan Company · leaf 103
example a truss that is 30 feet acrossfrom point to point, and a pitch of one half; then thedistance the peak would rise would be 15 feet. Take ELEMENTARY COURSE IN WOODWORK. 99 the framing square and lay it on the chord, taking 12inches on the blade and 12 inches on the tongue andmark off 15… … o 2 FlG.120 T»E^ BEAM, the square gives the angle at which the chord or rafteris to be cut at the peak. The line at the other end ofthe chord gives the line from which to measure thedistance the tenon and shoulders go down into the tie-beam. The strut shown in the drawing, Fig. 118, has onejoint…
Woodwork (Manual training)
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