Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 602
Fig. 1423. Fig. 1424. roof with two kinds of pitch, is that of the polygon of rods, and self-support-ing; but, in general, they have central support from partitions, and theiroutlines are much varied by curves in the lower rafters cut from plank. 586 ARCHITECTURAL CONSTRUCTION. Fig. 1424 is the…
Mechanical drawing
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