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 132
different radii, as at Fig. 146 and 147, which re-semble the elliptical curve. The ovolo and cavetto are generallya quadrant, but often less. When they are less, as at Fig. 150,the centre is found thus : join the extremities, a and 6, and bisectahin c ; from c, and at right angles to a b, draw c d^…
Carpentry · Architecture
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