Local Engineering Data for St. Louis

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1893 - Building materials - 52 pages
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Page 12 - In#tifut>.', which are practically identical with those referred to by the author. Oxygen in Malleable Iron.— Mr. P. Gladky t discusses the part that is played by the oxygen which is present in malleable iron. The author assumes that of the various impurities present in this metal...
Page 30 - Specifications (C9) in a proportion of one part of cement to three parts of sand by weight, the resulting mortar at the age of seven and twenty-eight days possesses a tensile strength of less than seventy-five percent of that developed in the same time by mortar of the same consistency made of one part of the same cement and three parts of Ottawa sand. Sand for Sand Bed or Cushion Sand used for...
Page 44 - Concrete facing will be used and shall be composed of one part Portland cement and two and one-half parts sand...

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