The American house-carpenter; a treatise upon architecture, cornices and mouldings, framing, doors, windows, and stairs. Together with the most important principles of practical geometry (1852)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York : J. Wiley · leaf 186
make/k equal to fl by the arc, / &, or make g kequal to g j by the arc, J k ; then the angle atj will be the top-bevil of the jack-rafters, and the one at k will be the down-bevil*302.— To find the backing of the hip-rafter. At any con-venient place in b e, (Fig- 215,) as o, draw m n, at right… … Fig. 2! 6.
Carpentry · Architecture
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