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
mp;c.; and a regular curve will be formed that will be tangical to the line, a h, at tha point, 1, and to 5 c at 5. This is of much use in stair-building, in easing the anglesformed between the wall-string and the base of the hall, also PRACTICAL GEOMETET. 31 between the front sti-ing and level… … 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.
Carpentry · Architecture
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