Iowa Engineer Volume 18-19

Iowa Engineer Volume 18-19

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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. 1917 edition. Excerpt: ... adopled by the American Society for Testing Materials. By followlllg these specifications satisfactory drain tile may be produced for any situation for which tile are suited.. It is hoped that this investigation of culvert pipe will indlcale the limits of suitability of pipe culverts, and aid in preparmg standard specifications. The work is being carried on in three divisions: First. Field Inspection. So far 81 reinforced concrete culverts 24 inches in diameter and larger have been inspected. It is hoped that a large number, including concrete, c111y and metal, will be inspected this season. Second. Loads on Culvert Pipe. Actual weighing of the loads coming upon culverts, from both the earth filling and supc1'1m' posed engine loads are being made. We have conclusive data from previous experiments on the loads due to the filling 0n plpe laid in a trench. It is necessary to get data on the load due lo the filling material when the pipe is not laid in a trellchl but 1" the bottom of the fill. Third. Tests of Pipe, as being Manufactured at Present. A large number of tests, especially of reinforced concrete pipc, are contemplated. Some already made will be shown in this reportSufficient data are at ha11d for investigating the reason for the failure of pipes when laid in trenches. The loads-on such pipe are quite closely determined from the formula W_-=CwB2, where W equals total weght on pipe per unit of length, w equals weight of ditch filling material per unit of volume, B equals breadth of ditch a little below the top of the pipe, and C equals a coefficient of loads in pipes in ditches. A full discussion of the derivation and use of this formula is given in Bulletins 31 and 36 of the Iowa Engineering Experiment Station. It is more

Product details

  • Paperback | 70 pages
  • 189 x 246 x 4mm | 141g
  • United States
  • English
  • black & white illustrations
  • 1236959183
  • 9781236959188