The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 298
make/ A; equal to // by the arc, I k, or makeg- kequal to g j by the arc, j k ; then the angle at j will be the top-bevil of the jack-rafters, and the one at k will be the down-bevil*388.— To find the backing of the hip-rafter. At any con-venient place in b e, {Fig. 241,) as o, draw m n, at right… … Fig. 242.
Carpentry · Architecture
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