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Field Performance of a Soil Nail System in Loess

by Carlton L. Ho, Washington State Univ, United States,
Harald P. Ludwig, Washington State Univ, United States,
Richard J. Fragaszy, Washington State Univ, United States,
K. Ronald Chapman, Washington State Univ, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract:

This paper presents data from measurements of a soil nail system constructed in loess soil in Pullman, Washington. The soil nail system is designed to retain a 39.2 ft (11.9 m) high excavation for the foundation of an extension to an academic research building on the Washington State University campus. This structure is also being constructed adjacent to existing masonry clad reinforced concrete structures. Due to the existing structures, close control on the displacement was desired. Survey points around the site and on the adjacent structures were used to measure surfacial settlement. Strain gages on selected soil nails were used to evaluate the load transfer from the soil to the soil nail. Pull-out tests were used to evaluate the capacity of the soil nails.

Subject Headings: Soil nailing | Soil strength | Soil stabilization | Loess | Soil stress | Retaining structures | Structure reinforcement | Washington | United States

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