Buildings and structures of American railroads. A reference book for railroad managers, superintendents, master mechanics, engineers, architects, and students (1893)
Berg, Walter Gilman, 1858-1908 · New York Wiley · leaf 278
he principal timbers usedare 5-in. X 5-in. ornamental posts; 5-in. X 5-in caps; 5-in. X9-in. purlins; 2-in. X 6-in. rafters, spaced 2 ft. centres; i-in.roof-boards covered with tin. This design of roof is also used very extensively by the _ _ Pennsylvania Railroad for shelters, in which case three…
Building · Railroads
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Rudiments of the art of building : represented in five sections [...] for the use of architects, builders, draghtsmen, machinists, engineers and mechanics (1853)](https://img.insideoutlibrary.com/img/200/ia-rudimentsofartof00bull-168-76.webp)
