Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 511
River des Peres Bridge, Forest Park, St. Louis. feet in steel is to be flanked on each side by three spans of re-inforced concrete, each of 192 feet. Th?se spans are ribbed EXPANSION JO/NTS 7//T/£f?ODS> 6oc.TOC. , … Memorial Bridge, Washington, D. C. arches, having a rise of twenty-nine feet, with their exteriors ingranite masonry. In arguing for bridges in reinforced concrete,Mr. Edwin Thacher points out that under normal circumstances BRIDGES 445 their steel is not strained to much more than one quarter of…
Inventions · Inventors
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