Report Upon Pavements Recently Built by the Board of Local Improvements of the City of Chicago

Report Upon Pavements Recently Built by the Board of Local Improvements of the City of Chicago

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... of the drum could tell the temperature of the sand and stone within 10 degrees by spitting on it and watching the frying spit! He did not prove that they did use this ability to properly, heat the material; and he would probably be unwilling to divide his salary with these men for performing part of his duties., Since the specifications do not state the temperature at which the binder shall arrive on the street, it is particularly important that the material shall start from the plant at the right temperature. Further, this condition is important also because of necessity the materials must be hauled long distances from the street to the plant; and the wagons frequently stop en route for the noon hour. On one day I saw nine wagons hauling from one plant thus stopped. These are two reasons why the temperature of the binder should be taken on the street. 6. Covering Loaded Waons. The specifications require that the binder shall be brought to the street in wagons covered with canvas. On the day of my inspection three of the five plants were sending binder to the street without covers on the wagons. An examination made on the street where this binder was being delivered indicates that the binder when received on the job was too cold to be properly compacted by rolling. This is another reason why the temperature of the binder should be taken on the street. A member of the staff reports that on September 12, binder was being hauled four miles to Yeaton street during a light rain in wagons without covers. 7. Rolling. The specifications state that the binder shall be "rolled and thoroughly compacted"; but makes no statement as to the weight of the roller, the time of rolling, or the degree of compactness to be obtained. The...show more

Product details

  • Paperback | 36 pages
  • 189 x 246 x 2mm | 82g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236766431
  • 9781236766434