A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 43
hiscase, each layer of rails diminishes in length and number,until the area of the top layer does not greatly exceed the sizeof the pier base, the footing thus assuming a pyramidalform. 63. An example of the use of I beams is shown inFig. 20. The 10-inch I beams b run transversely underthe walls… … Fig. 20.
Architecture · Building
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