Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 191
hod of constructing wooden bridges, wherethe banks of the river are high enough to permit the use of thetie-beam, a h. The upright pieces, c d, are notched and boltedon in pairs, for the support of the tie-beam. A bridge of thisconstruction exerts no lateral pressure upon the abutments. Thismethod… … Fig. 226. 314.—Fig. 227 exhibits a wooden bridge without a tie-beani*Where staunch buttresses can be obtained, this method may berecommended; but if there is any doubt of their stability, it FRAMING. 177
Carpentry · Architecture
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