CAST-IN-PLACE PIPE

Cast-in-place monolithic concrete pipe was placed in a prepared trench using a slip-form machine. Specifications which had to be met by the contractor are set forth. The trench was excavated to the proper width and the bottom of the trench was shaped to conform to the bottom 210 degrees of the external diameter of the pipe. The slip-form machine (designed for the specified pipe size and desired wall thickness) was then placed in the trench. The inner walls of the machine had vibrators attached to them. A cement finisher dressed the exterior top of the pipe immediately behind the slip form machine. A man in the pipe set the top form and finished the interior bottom surface. Observations are made regarding cracking problems. It is concluded from this project that this is an expendient method to place pipe of the larger sizes. Savings were realized with this method of cast-in-place pipe.

• Corporate Authors:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • O'neil, P E
• Publication Date: 1976-4

Media Info

• Features: Photos;
• Pagination: p. 120-124
• Serial:
  • Highway Focus
  • Volume: 8
  • Issue Number: 2

Subject/Index Terms

• TRT Terms: Cast in place structures; Concrete pipe; Slip form pavers; Specifications; Trenches
• Old TRIS Terms: Slip forms
• Subject Areas: Construction; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00149801
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: Apr 13 1977 12:00AM