Encyclopedia of architecture : a dictionary of the science and practice of architecture, building, carpentry, etc., from the earliest ages to the present time, forming a comprehensive work of reference for the use of architects, builders, carpenters, masons, engineers, students, professional men, and amateurs (1852)
Nicholson, Peter, 1765-1844, Lomax, Edward, Gunyon, Thomas · New York : Johnson, Fry & Co. · leaf 728
MIIP mooF, P^9 7 PLATE IV … Invrntrd hv P Nicholson En<f*hy RThfw II ip 499 II IP draw lines from the centres and ends of the beams, perpen-dicular to the ridge-line, and lay out the two sides of theroof 2 and 3, by making e d at 3 equal to x n in 1, thelength of the longest common raficr, and c a in 3 equal tou d- at A,…
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