Modified Standard Penetration Test–based Drilled Shaft Design Method for Weak Rocks

Stark, Timothy D., Long, James H., Osouli, Abdolrzea. Baghdady, Ahmed K.

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https://hdl.handle.net/2142/98914 Copy

Description

Title

Modified Standard Penetration Test–based Drilled Shaft Design Method for Weak Rocks

Author(s)

Stark, Timothy D., Long, James H., Osouli, Abdolrzea. Baghdady, Ahmed K.

Issue Date

2017-12

Keyword(s)

• drilled shaft
• weak IGMs
• axial capacity rock
• shale
• side and tip resistance
• predictive method
• resistance factor
• standard penetration test
• penetration rate

Abstract

In this project, Illinois-specific design procedures were developed for drilled shafts founded in weak shale or rock. In particular, a modified standard penetration test was developed and verified to characterize the in situ condition of weak shales or rocks in Illinois for drilled shaft design. For this project, weak shale or rock is defined as an intermediate geologic material (IGM) with an unconfined compressive strength of 10 to 100 ksf. These investigation and design improvements are anticipated to lead to safer deep-foundation design and reduced costs for IDOT.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Series/Report Name or Number

FHWA-ICT-17-018

ISSN

0197-9191

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/98914

Sponsor(s)/Grant Number(s)

IDOT-R27-145

Copyright and License Information

No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

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