Hatfield, Robert Griffith, 1815-1879. [from old catalog] · New York & London, Wiley and Putnam · leaf 200
ose stream is rapid, or where it is ne-cessary to preserve an uninterrupted passage for the purposes ofnavigation, the centre must be constructed without intermediatesupports, and without a continued horizontal tie at the base ; sucha centre is shown at Fig. 233. In laying the stones from thebase… … Fig. 233. additional security. Upon this plan, with some variation to suitcircumstances, centres may be constructed for any span usual instone-bridge building. 324.—In bridge centres, the principal timbers should abut, andnot be intercepted by a suspension or radial piece between.These should be in…
Carpentry · Architecture
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