. When one truss is The two bridges illustrate well the difference be- completed, the false work is removed and stored tween American and English practice. : away for future use, leaving one span completed, Certain limitations were imposed upon the and standing isolated over the river. From one… … by those interested in the navigation of the river. The to meet it. The shore member is a double cantilever spans act by their weight and strength as anchorage great object to be attained was to obstruct the river as poised at its middle on its pier like a balance beam, and spans for the…
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