The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 24
e of iron. It has been repeated thousands oftimes in this country on both railroads and highways, and will long continue a favorite formof bridge for new lines of railroad, and for wagon-roads in places where timber is cheap andthe site distant from a railway station. It will be fully treated in… … directly to the ends of the upper chord by two inclined tension members. There is no stressin the lower chord. It is therefore a kind of multiple suspension system and not properly atruss at all. It was largely used from 1840 to 1850 on the Baltimore and Ohio Railroad. An improvement on the Bollman…
