Overview
Authors
Carlos A. Lazarte; National Cooperative Highway Research Program
Description
TRB's National Cooperative Highway Research Program (NCHRP) Report 701: Proposed Specifications for LRFD Soil-Nailing Design and Construction contains proposed specifications for the design and construction of soil-nailed retaining structures.
The American Association of State Highway and Transportation Officials (AASHTO) Standard Bridge Specifications, the AASHTO Load and Resistance Factor Design (LRFD) Bridge Design Specifications, and the AASHTO LRFD Bridge Construction Specifications do not include guidance for soil-nailed structures.
In the absence of AASHTO LRFD specifications, some state departments of transportation will not use soil-nailed retaining structures. Given the potential advantages of soil-nailed structures, there was a need to develop proposed standard design and construction specifications for soil-nailed structures for incorporation into the AASHTO LRFD Bridge Design and Construction Specifications.
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