Inside Out LibraryBuilding construction and superintendence, by F.E. Kidder ... (1896)Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, W.T. Comstock · leaf 426No. 3.—Span, 6 feet ; weight, 35 lbs. per sq. foot. … No. 8.—Span, 4 feet ; weight, 35 lbs. per sq. foot.BuildingInternet Archive · Public Domain Mark 1.0. Free to use for anything.More pictures from Building construction and superintendence, by F.E. Kidder ...More like this