00458068

Component

http://onlinepubs.trb.org...trr/1985/1044/1044-003.pdf

https://scholar.google.co...ones&publication_year=1985

The West Papago/I-10 Inner Loop Freeway alignment in Phoenix, Arizona is underlain by up to plus or minus 20 ft of surficial silty clay, sandy clay, clayey sand overburden, and plus or minus 200 ft of dense sand-gravel-cobbles (S-G-C) with occasional plus or minus 18-in boulders. Conventional, small-diameter borings are used for disturbed and undisturbed sampling in the overburden. Atterberg Limits, mechanical analyses, consolidation, collapse-potential, direct shear, and triaxial compression tests are performed on the overburden material. Refusal to helical-auger penetration usually occurs at or near the top of the S-G-C deposit. Local practice is to utilize percussion drilling to penetrate the S-G-C deposit. This procedure does not produce representative specimens of the foundation material and laboratory testing is not attempted. This paper contains a description of the composition of the subsurface materials, current drilling-sampling techniques for the S-G-C deposit, and the use of large observation borings as a supplementary means for conducting visual examination of the S-G-C material. This examination aids in the assessment of the S-G-C material as a foundation material for bridges and retaining walls, as a tunneling medium, and in the slopes of a depressed roadway.

Publication of this paper sponsored by Committee on Exploration and Classification of Earth Materials. 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.

01419434

pp 13-16

1985

Transportation Research Record

0309039606

Print

Figures (3) ; Photos (3)

Atterberg limits; Boring; Cobbles; Compression; Consolidations; Direct shear tests; Geological surveying; Gravel; Mechanical analysis; Overburdens; Sand

Cobblestones; Triaxial compression

Geotechnology; Highways; I41: General Soil Surveys

TRIS, TRB

Sep 30 1986 12:00AM

• AN EXPERIMENTAL EVALUATION OF AUTOSTRESS DESIGN
• BRIDGES PRODUCED BY AN ARCHITECTURAL ENGINEERING TEAM
• COUPLING JOINTS OF PRESTRESSING TENDONS IN CONTINUOUS POST-TENSIONED CONCRETE BRIDGES
• FINITE ELEMENT ANALYSIS OF CRACKED DIAPHRAGM WELDS ON THE OHIO RIVER BRIDGE AT WHEELING, WEST VIRGINIA
• FUNDAMENTAL CHARACTERISTICS AND BEHAVIOR OF REINFORCED CONCRETE BRIDGE PIERS SUBJECTED TO REVERSED CYCLIC LOADING
• INVESTIGATION OF BROKEN WIRES IN SUSPENDER STRANDS OF I-470 OHIO RIVER BRIDGE AT WHEELING, WEST VIRGINIA
• PLATE LOAD TESTS FOR THE WEST PAPAGO/I-10 INNER LOOP IN PHOENIX, ARIZONA (ABRIDGMENT)
• Prediction of Axial Capacity of Single Piles in Clay Using Effective Stress Analyses (Discussion and Closure)