American Highway Engineers' Handbook

American Highway Engineers' Handbook

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ... Cons., Am. Soc. C. E. (17e) arc as follows: "In cases where patented bituminous concrete pavements of Class C are used, the same fundamental principles observed under Class A pavements should be followed, especially in the case of covering in detail the composition and grading of the mineral aggregate." The following specification, as used by a state highway department to cover the mineral aggregate of a patented pavement, illustrates the indefinite requirements condemned by the committee of the Am. Soc. C. E. "The several grades and sizes of mineral aggregate shall be accurately measured in proportions previously determined by laboratory tests to give the best results, that is, the most dense mixture of mineral aggregate and one having inherent stability." The use of the above form of general descriptive specification allows the contractor to furnish an aggregate which may vary in composition between wide limits. Definite specifications which will control the character and uniformity of the aggregate of any patented bituminous concrete pavement can be prepared to cover any local conditions. For examples of definite requirements covering aggregates of patented pavements, see the Bithulithic specifications of Los Angeles, Cal., Art. 8: the Bitulithic specifications of Portland, Ore., Art. 16; and the Penn. State Highway Dept. Warreoite specifications, Art. 8. Differentiation of Bitulithic and Warrenite bituminous concrete mixtures. The following statement waa prepared by George C. Warren, President of the Warren Brothers Co., for the information of the engineers enrolled in the Graduate Course in Highway Engineering at Columbia University. "Bitulithic and Warrenite mixtures are both made under the provisions of the Warren...
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Product details

  • Paperback | 932 pages
  • 189 x 246 x 47mm | 1,628g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236604741
  • 9781236604743