Alternative Title

Paper No. 2.58

Location

St. Louis, Missouri

Session Start Date

3-8-1998

Session End Date

3-15-1998

Abstract

A case history of evaluation and remediation of an existing slope supporting two 15,000-gallon underground storage tanks at the top of the slope is presented. The slope was constructed more than 20 years ago by placing fill on the side slope of a valley formed by a creek, without properly benching and clearing the slope prior to placement of the fill. The slope stability analysis showed that the slope in its existing condition was potentially unstable. The selection of the remediation technique was relatively complicated because of the presence of underground storage tanks at the top of the slope, the steepness of the slope, limited space available to mobilize construction equipment, and presence of overhead utilities. Various options were considered for remediation of the slope and the option of the installation of a rock buttress was selected and constructed.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-8-1998

Document Version

Final Version

Rights

© 1998 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Stabilization of an Existing Slope Supporting Underground Storage Tanks at the Top

St. Louis, Missouri

A case history of evaluation and remediation of an existing slope supporting two 15,000-gallon underground storage tanks at the top of the slope is presented. The slope was constructed more than 20 years ago by placing fill on the side slope of a valley formed by a creek, without properly benching and clearing the slope prior to placement of the fill. The slope stability analysis showed that the slope in its existing condition was potentially unstable. The selection of the remediation technique was relatively complicated because of the presence of underground storage tanks at the top of the slope, the steepness of the slope, limited space available to mobilize construction equipment, and presence of overhead utilities. Various options were considered for remediation of the slope and the option of the installation of a rock buttress was selected and constructed.