Value Engineering for Roadway Expansion Project over Deep Thick Soft Soils
Publication: Journal of Construction Engineering and Management
Volume 142, Issue 2
Abstract
A roadway expansion that takes place on soft ground is susceptible to differential settlement because of the high consolidation of soft soils. Therefore, steps must be taken to lessen the risk of such settlement; yet, this often only results in costly drainage solutions. In that, applying a systematic value engineering (VE) process can be beneficial to develop cost-effective design alternatives. However, VE studies specifically targeting for this problem are absent from the field. Thus, the goal of this study is to supplement this knowledge gap by applying a systematic VE process to an expansion project on soft ground to demonstrate the benefits of performing VE. A case study was performed on an expansion project over a soft soil layer approximately 50 m thick. Through the VE process, the original design was reviewed, problems were discussed, and three alternatives were proposed. Then value analysis techniques were applied to evaluate these alternatives in terms of cost saving, function improvement, and value improvement with respect to the original design. The VE process and design alternatives as applied in this study are expected to serve as a guideline for engineers and decision-makers in roadway expansion projects on soft ground.
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Acknowledgments
The authors gratefully acknowledge that this study was performed with the support and cooperation of the Naengjeong-Busan Construction Agency of the Korea Expressway Corporation.
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Information & Authors
Information
Published In
Journal of Construction Engineering and Management
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Dec 29, 2014
Accepted: Jul 10, 2015
Published online: Aug 17, 2015
Discussion open until: Jan 17, 2016
Published in print: Feb 1, 2016
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