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 121
k, and the distance of thecentre from the chord k I; bisect the side c g oi the wall b h, at right angles at the point i;from i make ib equal to /A; with a radius bg or be, describe the segment c, mg will be thetrue place of springing of the ribs; all the other lesser ribs are cut from the angle…
Carpentry
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