The carpenter's new guide: being a complete book of lines for carpentry and joinery (1850)
Nicholson, Peter, 1765-1844. [from old catalog], Johnston, William, architect. [from old catalog] · Philadelphia, Lippincott, Grambo and co. · leaf 155
Fln/< /// … />// E. -i iv./.F. V DESIGNS OF ROOFS. 67 PLATE 42. This roof is calculated for a span of seventy or eighty feet. You will observe in this, and the foregoing roofs, that the trusses are the same innumber as the purlines which they have to support; for how absurd it is to give a roofmore strength…
Carpentry
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