Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 39
FACTORY CONSTRUCTION. 25 … Sketch of an old New England Factory Roof and Floor. presents more surface to flames, besides being unsightly. The thinner floor- plank gives a lcssstable hold for screwing down the machinery. Higher cost of lumber is not a valid reason for the adoption of this floor Fig. 4.— Sketch of more recent…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.