Revised Building Ordinances of the City of Chicago

Revised Building Ordinances 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. 1915 edition. Excerpt: ... form with terra cotta tile of such height, diameter and thickness as is allowed by safe engineering practices, provided that the material shall not be stressed in excess-of the limits prescribed in this Chapter for walls and columns. 568. Cinder Concrete.) (a) Cinder concrete construction may be used for all buildings in which fireproof construction is mandatory by this Chapter, or where ordinary construction, mill construction or slow-burning construction may be used. (b) Only clean, thoroughly burnt, steam boiler cinders, free from matter other than cinders may be used. The cinders used shall be of such size that they will pass through a one-inch square mesh.-Cinder concrete piers or walls shall not be permitted to carry loads and shall not be given credit therefor. (c) The ultimate compressive strength per square inch of cinder concrete shall be taken as not exceeding seven hundred pounds. The ratio of the modulus of elasticity of steel divided by the modulus of elasticity of cinder concrete shall be taken as thirty. ((1) There shall not be less than one part of Portland cement to seven parts of cinders and sand of the grade known as torpedo sand in cinder concrete. All other special requirements and methods of calculation for reinforced concrete as required in this Chapter shall modify and regulate the use of cinder concrete in buildings. (e) All steel and all metal pipe and conduits enclosed in cinder concrete shall be protected by a coating of cement grout or plastered with good lime mortar before the cinder concrete is placed. (f) For fireproof construction, the minimum thickness of cinder concrete covering on structural metal shall be the same as required for brick or concrete covering for fireproof buildings by this Chapter. In...show more

Product details

  • Paperback | 132 pages
  • 189 x 246 x 7mm | 249g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236786491
  • 9781236786494