Publisher's Synopsis
Excerpt from The Viaduct Works' Handbook: Being a Collection of Examples From Actual Practice of Viaducts, Bridges, Roofs, and Other Structures in Iron; Together With Tables of Prices, Weights, and Other Information Useful to Engineers in Designing and Estimating Wrought and Cast-Iron Work
Parallel iron girder bridges of the class shown in woodcuts, Figs. 1, 2, 3, for ordinary cases, are the most convenient in form for moderate spans, whether of triangular, as Fig. 1, latticed, as Fig. 2, or plain plate, as Fig. 3, and are either with ?oor on top of the main girders, and surmounted by parapet railing, or with ?oor at bottom as in Fig. 4, or at any convenient height wherein the main girders may serve as parapets.
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