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 164
b to runquite across the roof. Fig. B is a roof calculated for two rooms. Fig. C shows the method of framing a bridge floor. 70 DESIGNS OF ROOFS. PLATE 45. Fig. A is the design of an M roof, which, is useful in some cases where the span is great,and no wall between, and the roof is required not to… … Plate 46.
Carpentry
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