aight- In the Scientific American of April 4, we gave a while in the exact form they are intended to be when description of the main piers of this great bridge, ened finally. The edg es and ends are then planed, and finally erected. with the construction and method of erection, and also each plate… … Fig. l.-THE FORTH BRIDGE-ELEVATION AND PLAN. hydraulic crane are Very fully described and illustra- the piers. From the accompanying elevation and plan tudinal H beams are made up of a deep webbed tee ted in the Scientific American Supplement, No. and two angles, being partly drilled through these…
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