Alternative Title

Paper No. 1.22

Location

St. Louis, Missouri

Session Start Date

3-8-1998

Session End Date

3-15-1998

Abstract

Due to the high cost premiums associated with development on virgin lands, it is not uncommon to find new structures planned for construction over filled grounds. Such structures vary in function ranging from industrial facilities to public institutions. This paper presents three case histories related to construction or shallow foundations on random fill for a factory building, a public library, and a college building. The factory building was constructed partly over deep uncontrolled fill with little foundation improvement and partly over residual soils. The library was constructed partly over a randomly filled, abandoned quarry and partly over pinnacled limestone and residual soils. Foundations in the quarry area were treated by preloading, while others were improved by selective undercutting. Foundations for the college building were constructed on improved ground using deep dynamic compaction. The case histories illustrate that shallow foundations, with some type of ground improvement, can be used in uncontrolled fill areas. In limited cases, where a greater differential movement can be tolerated, foundations may require relatively little ground improvement. In all cases, however, where shallow foundations arc planned for construction over uncontrolled fill, it is paramount to recognize and disclose the attendant risk to future settlement.

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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Foundation Construction on Random Fill

St. Louis, Missouri

Due to the high cost premiums associated with development on virgin lands, it is not uncommon to find new structures planned for construction over filled grounds. Such structures vary in function ranging from industrial facilities to public institutions. This paper presents three case histories related to construction or shallow foundations on random fill for a factory building, a public library, and a college building. The factory building was constructed partly over deep uncontrolled fill with little foundation improvement and partly over residual soils. The library was constructed partly over a randomly filled, abandoned quarry and partly over pinnacled limestone and residual soils. Foundations in the quarry area were treated by preloading, while others were improved by selective undercutting. Foundations for the college building were constructed on improved ground using deep dynamic compaction. The case histories illustrate that shallow foundations, with some type of ground improvement, can be used in uncontrolled fill areas. In limited cases, where a greater differential movement can be tolerated, foundations may require relatively little ground improvement. In all cases, however, where shallow foundations arc planned for construction over uncontrolled fill, it is paramount to recognize and disclose the attendant risk to future settlement.