A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Design and Procurement Challenges for MSE Structures: Options Going Forward
Mechanically Stabilized Earth Walls (MSEWs) have been routinely used over the past 20 years. Experience with MSE structures has identified several challenging issues facing public and private owners using MSEWs for transportation corridors and land development to maximize useable land area. This paper discusses the current `state-of-practice' and offers recommendations relative to procurement and design of MSE structures to minimize short-term problems and ensure a service life consistent with nationally recognized design methods (AASHTO & NCMA). Specifically, the benefits and challenges of the owner controlled aspects of the process are discussed, such as; various options to contract for MSEWs, integration/coordination with civil site design, compatibility with geotechnical site investigation, testing, analysis, and recommendations, as well as MSE design methods, procedures, and guidelines that influence both cost and performance. The division of professional design responsibility amongst the design team, a critical element to successful projects, is controlled by the owner. This paper provides guidance for future projects, primarily for owners, but also for design professionals, and contractors that balance prospective risks and rewards of the various procurement options available. Although focused specifically on MSEWs, Reinforced Soil Slopes (RSSs), and Segmental Retaining Walls (SRWs) encounter similar issues, such that the information presented is equally applicable to all types of MSE structures. Successful MSEWs will be significantly influenced by the manner in which existing and improved MSE structure design standards (AASHTO / NCMA) are implemented on future projects. This paper examines that implementation process and how lessons from the last 20 years can positively influence MSEW performance going forward.
Design and Procurement Challenges for MSE Structures: Options Going Forward
Mechanically Stabilized Earth Walls (MSEWs) have been routinely used over the past 20 years. Experience with MSE structures has identified several challenging issues facing public and private owners using MSEWs for transportation corridors and land development to maximize useable land area. This paper discusses the current `state-of-practice' and offers recommendations relative to procurement and design of MSE structures to minimize short-term problems and ensure a service life consistent with nationally recognized design methods (AASHTO & NCMA). Specifically, the benefits and challenges of the owner controlled aspects of the process are discussed, such as; various options to contract for MSEWs, integration/coordination with civil site design, compatibility with geotechnical site investigation, testing, analysis, and recommendations, as well as MSE design methods, procedures, and guidelines that influence both cost and performance. The division of professional design responsibility amongst the design team, a critical element to successful projects, is controlled by the owner. This paper provides guidance for future projects, primarily for owners, but also for design professionals, and contractors that balance prospective risks and rewards of the various procurement options available. Although focused specifically on MSEWs, Reinforced Soil Slopes (RSSs), and Segmental Retaining Walls (SRWs) encounter similar issues, such that the information presented is equally applicable to all types of MSE structures. Successful MSEWs will be significantly influenced by the manner in which existing and improved MSE structure design standards (AASHTO / NCMA) are implemented on future projects. This paper examines that implementation process and how lessons from the last 20 years can positively influence MSEW performance going forward.
Design and Procurement Challenges for MSE Structures: Options Going Forward
Simac, Michael R. (author) / Fitzpatrick, Blaise J. (author)
Earth Retention Conference (ER) 2010 ; 2010 ; Bellevue, Washington, United States
Earth Retention Conference 3 ; 531-538
2010-07-26
Conference paper
Electronic Resource
English
Design and Procurement Challenges for MSE Structures: Options Going Forward
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