New types of concrete pipe conduit construction had been compared analytically with conventional trench-type installations and with construction with soil-cement bedding. The new conduits were of composite construction using in situ concrete bonded to various portions of thin precast cores. Considerable cost savings appeared to be obtainable with composite construction in narrow trenches. Tests were conducted with the intention of verifying the assumptions. The removal examination, and reevaluation of the test pipe and backfill are described, as are unexpected delayed responses in the test installation. New analyses are centered on composite and conventional conduits and on two types of concrete backfilled systems, comparing construction techniques and cost estimates. Means are proposed to obtain actual installations which duplicate theoretical conditions to obtain calculated savings.

  • Supplemental Notes:
    • A symposium presented at the 79th Annual Meeting of the American Society for Testing and Materials, Chicago, Illinois, 27 June-2 July, 1976.
  • Corporate Authors:

    American Society for Testing and Materials (ASTM)

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • Breitfuss, T K
  • Publication Date: 1977-9

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 48-65
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00164868
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 9 1977 12:00AM