The carpenter's new guide; a complete book of lines for carpentry and joinery, treating fully on practical geometry, soffits, groins, niches, roofs, and domes, and containing a great variety of original designs. Also a full exemplification of the theory and practice of stair building, cornices, mouldings, and dressings of every description. Including also some observations and calculations on the strength of timber (1854)
NICHES. 41 PLATE 26. The Plan of a Niche in a circular Wall being given, to find the Front-rih. B is the plan given, Avhich is a semicircle whose diameter is a h, and a, i, Jc, I, m, h, thefront of the circular wall. Suppose the semicircle B, to be turned round its diameter a h, sothat the point v…
Carpentry
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