Rudiments of the art of building : represented in five sections [...] for the use of architects, builders, draghtsmen, machinists, engineers and mechanics (1853)
Bullock, John · New York : Stringer & Townsend · leaf 71
struts ; and, by extending this principle ad infinitum, wemight construct a roof of any span, were it not that a prac-tical limit is imposed by the nature of the materials. Some-times roofs are constructed without king posts, the queenposts being kept apart by a straining piece. This construc-tion… … roof (now destroyed) of the cliurch of St. Paul, outside thewalls, at Rome. This truss is interesting from its early date,having been erected about 400 years ago ; the trusses are inpairs, a king post being keyed in between each pair to sup-port the tie beams in the centre. 112. Of late years iron…
Building
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