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Title:

ENERGY LOSS IN LONG ROD PENETRATION TESTING - TERMINUS DAM LIQUEFACTION INVESTIGATION
Cover of ENERGY LOSS IN LONG ROD PENETRATION TESTING - TERMINUS DAM LIQUEFACTION INVESTIGATION

Accession Number:

00784649

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In order to evaluate liquefaction potential at Terminus Dam, investigations consisting of Becker Penetration Testing, cross-hole shear wave velocity, and Standard Penetration Testing (SPT) were performed. SPT drill rod lengths of up to 60 m (200 ft) were anticipated. Measurements were made to evaluate the loss in transmitted energy in long drill rods in the SPT. SPT tests were performed with a Mobile automatic hammer and NWJ drill rod. Instrumented subassemblies were located at the top of the rod string and at varying locations in the bottom of the rod string to measure energy. Energy loss was evaluated by determining the energy content in the incident wave pulse as a function of the length of the rods tested. Test results indicate an energy loss rate of 1% per 3 m (10 ft) of rod. The results indicate that for long drill rods, adjustments are required to SPT data.

Supplemental Notes:

The proceedings are available only on CD-ROM. This paper is a reprint from ASCE Geotechnical Special Publication No. 75, Proceedings of the ASCE Specialty Conference on Geotechnical Earthquake Engineering and Soil Dynamics III, Seattle, Washington, August 3-8, 1998.

Report/Paper Numbers:

FHWA-RD-99-165

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Federal Highway Administration

1200 New Jersey Avenue, SE
Washington, DC 20590 United States

Authors:

Farrar, J A
Nickell, J
Allen, M G
Goble, G
Berger, J

Pagination:

3p

Publication Date:

1999

Conference:

Workshop on New Approaches to Liquefaction Analysis

Location: Washington, D.C.
Date: 1999-1-10 to 1999-1-10
Sponsors: Transportation Research Board, Federal Highway Administration

Identifier Terms:

Terminus Dam (California)

Uncontrolled Terms:

Drill rods

Subject Areas:

Energy; Geotechnology; Highways; I42: Soil Mechanics

Files:

NTL, TRIS, TRB, USDOT

Created Date:

Mar 1 2000 12:00AM

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