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Comparison of Water/Wastewater Project Performance by Project Delivery Systemand Payment Provision
Municipal water and wastewater facilities play an important role in the infrastructure of this nation. In a continued effort to provide such facilities, public owners have been using a variety of project delivery methods and contract pricing provisions for design and construction of facilities. The increased use of design-build project delivery with a guaranteed maximum price (GMP) contract pricing structure in the water and wastewater industry has created an opportunity to collect performance data to measure the effectiveness of these methods. Through a detailed survey of public water and wastewater facility owners, data were collected to compare project performance based on schedule and cost growth measures. Data were collected on 100 projects completed since 2003 and with a total price of at least $3 million. Results show that design-build projects have a greater intensity (cost delivered per unit of time), with no difference in quality from design-bid-build projects. Also, the results of this study indicate that contracts using GMPs are more likely than projects with lump-sum contracts to have no schedule or cost growth. Overall, the results of this study provide new data for water and wastewater projects that can be used by owners to improve future project performance.
Comparison of Water/Wastewater Project Performance by Project Delivery Systemand Payment Provision
Municipal water and wastewater facilities play an important role in the infrastructure of this nation. In a continued effort to provide such facilities, public owners have been using a variety of project delivery methods and contract pricing provisions for design and construction of facilities. The increased use of design-build project delivery with a guaranteed maximum price (GMP) contract pricing structure in the water and wastewater industry has created an opportunity to collect performance data to measure the effectiveness of these methods. Through a detailed survey of public water and wastewater facility owners, data were collected to compare project performance based on schedule and cost growth measures. Data were collected on 100 projects completed since 2003 and with a total price of at least $3 million. Results show that design-build projects have a greater intensity (cost delivered per unit of time), with no difference in quality from design-bid-build projects. Also, the results of this study indicate that contracts using GMPs are more likely than projects with lump-sum contracts to have no schedule or cost growth. Overall, the results of this study provide new data for water and wastewater projects that can be used by owners to improve future project performance.
Comparison of Water/Wastewater Project Performance by Project Delivery Systemand Payment Provision
Bogus, Susan M. (author) / Shane, Jennifer S. (author) / Molenaar, Keith R. (author)
Construction Research Congress 2010 ; 2010 ; Banff, Alberta, Canada
Construction Research Congress 2010 ; 859-868
2010-05-04
Conference paper
Electronic Resource
English
Comparison of Water/Wastewater Project Performance by Project Delivery Systemand Payment Provision
| British Library Conference Proceedings | 2010
Municipal Water/Wastewater Project Delivery Performance Comparison
| Online Contents | 2013