The carpenter's new guide: being a complete book of lines for carpentry and joinery. Treating fully on practical geometry, soffits, brick and plaster groins ... with a great variety of designs for roofs, trussed girders ... with many other things entirely new: the whole founded on true geometrical principles; the theory and practice well explained and fully exemplified on eighty-four copper-plates; including some observations and calculations on the strength of timber (1830)
Nicholson, Peter, 1765-1844 · Philadelphia, J. Grigg · leaf 132
s roof 5 but in practice there is not theleast occasion for framing the sides in winding; for, instead of the ridge line, the top ismade level at the widest end of the roof, from the narrowest end, which begins at a point;and by this means the sides may be framed quite out of winding, which will… … ROOFING. 57 The Phn of a polygon Roof being given, and one of the common Bibs standing upon thatPlan, to find the Angle Rib, and the Form of the Boards that will cover it when the Ribs arefitted up. In fig. A let B be the given rib; divide the curve in any number of equal parts, asfour, and lay…
Carpentry
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