Concrete bridges and culverts, for both railroads and highways (1909)
Tyrrell, H. G. (Henry Grattan), b. 1867 · Chicago The M.C. Clarke publishing co. [etc.] · leaf 92
thepurpose of resisting any tensile stresses in the arch,but rather to supplement the concrete in resistingdirect compression. This is a new principle in archconstruction, not previously used. Illustrations and descriptions of two old Romanbridges are also given for the purpose of callin^^attention… … 74 CONCRETE BRIDGES .WD CUIJ-ERTS. Ponte Rotto, Rome. As it stands to-day, this old bridge lias three stonearch spans, and a suspension bridge, spanning thegap where other arches originally stood. The pres-ent bridge stands on the site of the old Pons Aemil-ius, built B. C. 178-1-1:2, -which was…
Bridges, Concrete · Culverts
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
