FIELD TEST DEFLECTIONS OF REINFORCED PLASTIC MORTAR PIPE

Two test sections of 30-in-diameter (76 cm) reinforced plastic mortar (RPM) pipe were installed to replace two deteriorated open irrigation laterals. Twenty-nine 20-ft (6.1 m) sections of pipe were placed in one section in a dry trench with five different types of bedding. Pipe deflections were measured at four different times during the 16 months after installation. Results showed the following average initial vertical pipe deflections: (a) well-compacted material, 1 percent; (b) puddled natural earth, 4 percent; (c) loose sand, 6 percent; and (d) loose natural earth, 8 percent. Thirty 20-ft (6.1 m) pipe lengths were placed in the other section in a wet and unstable subgrade. Deflections of the bell end,spigot end, and center of the pipe were measured at 2, 5, and 12 months after installation. Results showed that the average initial vertical deflections were 0.7 percent at the spigot end, 1 percent at the bell end, and 2.3 percent at the center of the pipe. These field tests indicate that RPM pipe will deflect less than 5 percent if it is installed according to U.S. Bureau of Reclamation specifications.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1974/518/518-005.pdf
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=FIELD+TEST+DEFLECTIONS+OF+REINFORCED+PLASTIC+MORTAR+PIPE&author=A.+Howard&publication_year=1974
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Subsurface Structures Design. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Howard, Amster K
• Conference:
  • 53rd Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1974-1-21 to 1974-1-25
• Publication Date: 1974

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 39-48
• Monograph Title: Geometric highway and culvert design
• Serial:
  • Transportation Research Record
  • Issue Number: 518
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Building; Deflection; Facilities; Field tests; Installation; Pipe; Reinforced plastics; Specifications
• Subject Areas: Construction; Highways; Hydraulics and Hydrology; Maintenance and Preservation;

Filing Info

• Accession Number: 00095582
• Record Type: Publication
• ISBN: 0309023637
• Report/Paper Numbers: #516
• Files: TRIS, TRB
• Created Date: Jul 2 1975 12:00AM