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 44
curve for door heads, window-heads, &c., to rather better ad-vantage than Art. 87. For instance, let a 5, {Fig- 49^ be thewidth of the opening, and c d the height of the arc. Extend gd^ and make d e equal to c d; join a and e, also e and h / andproceed as directed above. … Tig. 50 90.—To describe a circle withvn cmy given tnricmgle^ so thatthe sides of the triangle shall he tam^gical. Let ah c^ {Fig. 50,)be the given triangle. Bisect the angles a and 5, according toArt 77; upon d, the point of intersection of the bisecting lines,with the radius, d e, describe the…
Carpentry · Architecture
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