Concrete bridges and culverts, for both railroads and highways
A 1909 engineering manual by Henry Grattan Tyrrell, published in Chicago for railroad and highway engineers designing concrete bridges and culverts. The plates are line drawings: elevations, half-plans and cross-sections of arches, abutments and box culverts, thick with dimension lines, hatched fill, rebar grids and handlettered notes usable as technical-diagram texture.
