The carpenter's new guide: being a complete book of lines for carpentry and joinery (1848)
Nicholson, Peter, 1765-1844. [from old catalog], Johnston, William, architect. [from old catalog] · Philadelphia, Grigg, Elliot and co. · leaf 115
Plate 33. … Width of the Roof Tie Beam ( \ I* ■ WaU Plate ROOFING. 45 PLATE 33. Let a b be the end of a rectangular roof, a e and bf being a part of each side, let a eand bf be each equal to half the width a b of the roof; join ef; bisect ef in c; draw c dperpendicular to ef and make c d equal to the height of…
Carpentry
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