The book Personal Reminiscences of James Mapes Dodge was written by author Charles Piez Here you can read free online of Personal Reminiscences of James Mapes Dodge book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Personal Reminiscences of James Mapes Dodge a good or bad book?
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In diameter, 90 ft. High, with vertical retaining walls 17 ft. High (see Fig. 4). Now the pressure exerted by anthracite coal is about one-third of water pressure when the coal is level with the top of the wall, and fully one-half of water pressure when the wall is surcharged, and the structure necessary to take care of this pressure loomed up as one involving prohibitive expense. Imagine a boiler 246 ft. In diameter with a pressure of 510 Ibs. Per sq. Ft. , and you will get some idea of the st...ructural problem involved. But Mr. Dodge decided to make the coal sustain the wall, and while it seems paradoxical to say that the material that causes the pres- sure can be made to sustain that pressure, yet that is exactly what his scheme contemplated. The illustration, Fig. 5, shows a section of the building and illustrates the use of the anchor band which solved the problem in very simple and economic fashion. The band is circular and is suspended about 30 ft. Inside of the retaining walls. PERSONAL REMINISCENCES OF JAMES MAPES DODG In the operation of stocking out coal a section of the band is covered before any pressure is exerted by the coal against the corresponding section of the wall, and the necessary anchorage to the band is readily secured by light rods.
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