EFFECT OF HEAVY WHEEL LOADS ON 12-INCH-DIAMETER RIGID PIPE UNDER VARIOUS DEPTHS OF COVER

TESTS WERE CONDUCTED ON SIX SECTIONS OF 12-IN. DIAMETER STANDARD-STRENGTH CLAY PIPE INSTALLED UNDER SOIL LAYERS RANGING FROM 12 TO 42 IN. IN THICKNESS AND TRAFFIC-TESTED FOR 25- AND 50-KIP., 100-PSI-TIRE PRESSURE, SINGLE-WHEEL LOADS. THE TESTS WERE CONDUCTED TO DEVELOP DESIGN CRITERIA FOR DRAINAGE PIPE INSTALLATIONS BENEATH AIR FIELD FACILITIES AND ROADS. SEVEN SECTIONS OF PIPE WERE SUBJECTED TO LOAD TESTS IN THE LABORATORY TO DETERMINE THEIR CRUSHING STRENGTH. TEST RESULTS INDICATE THAT CURRENT COVER REQUIREMENTS ARE CONSERVATIVE. ABOUT 12 IN. OF COVER IS ADEQUATE TO PROTECT THE PIPE FROM A 25-KIP. LOAD AND ABOUT 27 IN. FROM A 50-KIP. LOAD. A LOADING SUBSTANTIALLY MORE SEVERE THAN THAT REQUIRED TO CRACK A RIGID PIPE IS REQUIRED TO CRUSH IT. A PIPE PARTIALLY OR INITIALLY CRACKED BY OVERLOADING CAN BE FURTHER CRACKED BY APPLICATION OF A SUBSTANTIALLY SMALLER LOAD THAN THAT CAUSING THE INITIAL CRACKING.

• Supplemental Notes:
  • No 4-400, 15 PP, 3 FIG, 12 PHOT
• Authors:
  • Ahlvin, R G
  • Ulery, H H
  • Cooksey, D L
• Publication Date: 1961-8

Media Info

• Serial:
  • Waterways Exp Sta Misc Papers

Subject/Index Terms

• TRT Terms: Clay; Design; Drainage; Fracture mechanics; Laboratory tests; Load tests; Oversize loads; Pipe; Soils; Traffic; Tubing; Underground structures; Wheel loads
• Uncontrolled Terms: Design criteria; Overloads
• Old TRIS Terms: Rigid tubing; Underground
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Hydraulics and Hydrology; Materials; Operations and Traffic Management;

Filing Info

• Accession Number: 00216436
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 28 1994 12:00AM