State-of-the-practice design of segmental retaining walls: NCMA's Third Edition Manual

摘要

The National Concrete Masonry Association (NCMA) published the First Edition of the Design Manual for Segmental Retaining Walls (DMSRW) in 1993. The Second Edition was published in 1997 and the companion NCMA SRW Drainage Manual was published in 2002, providing guidelines for incorporating surface and subsurface drainage details and systems into SRWs to minimize the potential for hydrostatic forces to develop and to provide guidance for including hydrostatic forces when drainage alone will not eliminate the potential for water to load the SRW. The Third Edition incorporates significant changes in the state-of-the-practice regarding SRW topics. This paper summarizes and discusses the rational for each change and will serve as a useful guide for practioners, particularly those designing with the aid of software based upon the Second Edition of the DMSRW. The paper is directed towards designers and specifiers of the materials and methods used for SRWs.