FRICTION PILE RESISTANCE STUDY

This 1976 research study presents a rational application of empirical methods of estimating the driving resistance of prestressed concrete, steel and timber piling into the recent alluvial soils of Oregon, through the use of the Standard Split-Tube Sampler and an Oregon Miniature Pile testing tool. Blow counts obtained from the driving of the testing tools ('N' and 'M' designations) at varying depths in the foundation investigative work are correlated against the ton per foot driving resistance ('R'), as determined by the Engineering News Record formula and its modifications, in 3717 tests on piling driven on Oregon State Highway Division bridge projects in most of Oregon's 36 counties. The correlation is accomplished through a computer-plotter presentation of both the investigative and project data in the form of 20 Resistance Charts of pile type versus Unified Soil Classifications. An example of the use of the Resistance Charts in the estimate of pile lengths for Oregon State Highway bridge projects is included.

• Supplemental Notes:
  • See also report dated 1969, PB-188 999.
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Davis, J L
• Publication Date: 1977-6

Media Info

• Pagination: 70 p.

Subject/Index Terms

• TRT Terms: Bridges; Friction piles; Highway bridges; Information processing; Penetration resistance; Pile driving; Pile foundations; Prestressed concrete; Soil mechanics; Soil types; Soils; Steel; Support piles; Timber
• Uncontrolled Terms: Soil classification; Steel piling
• Geographic Terms: Oregon
• Old TRIS Terms: Prestressed concrete piles; Resistance; Timber piles
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00151760
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/RD-77-S051 Final Rpt., Pub-76-4
• Files: NTIS, TRIS, USDOT
• Created Date: Apr 27 1977 12:00AM