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Soil nailing optimisation: lost opportunities in current practice
Date Issued
2014-08-29
Date Available
2016-06-24T13:50:05Z
Abstract
This paper analyses 127 cases histories in the US and Europe to evaluate the current state of soil nailing practice with respect to soil nail lengths and density, wall heights, wall inclination, and shotcrete thickness, as well as applications. When the cases are considered by project size and soil type, certain inefficiencies appear. Namely, smaller projects exhibit conservatism in nail density and shotcrete thickness, and use only a fully vertical wall. In contrast on larger projects, there appears to be an optimization of these factors. What appears to occurring is that for smaller projects and/or shorter walls, contractors are adopting conservative rules of practice instead of actually designing the projects in accordance with published design manuals. A single, small case is reconsidered using the Geotechnical Engineering Circular No.7, GEC7 design guide resulting in an estimated 7.2% savings.
Type of Material
Conference Publication
Publisher
Civil Engineering Research Assocation of Ireland
Copyright (Published Version)
2014 the Authors
Web versions
Language
English
Status of Item
Peer reviewed
Conference Details
CERAI 2014, Queens' University Belfast, Northern Ireland, 28 - 29 August 2014
This item is made available under a Creative Commons License
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