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)
GROINS. 37 PLATE 22. To describe the intersecting or Angle-rihs of a Groin standing upon an octagon Plan, the Sideand Body-ribs being given both to the same height. Fig. 1. ^ is a given body-rib, which may be either a semicircle or a semi-ellipse, andJ. is a side-rib given of the same height; J) is…
Carpentry
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