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REVIEW OF INCONSISTENCIES BETWEEN SUDAS AND IOWA DOT SPECIFICATIONS - Charusmita Dhiman - 08-16-2017 REVIEW OF INCONSISTENCIES BETWEEN SUDAS AND IOWA DOT SPECIFICATIONS MAY 2006 SUBMITTED TO: Iowa Highway Research Board Iowa Department of Transportation Center for Transportation Research and Education Project Number: TR-524 By: Wade A. Greiman, P.E. Snyder & Associates, Inc. Introduction The Iowa Department of Transportation s Standard Specifications for Highway and Bridge Construction were originally developed with highway construction in rural areas. As the state continues to develop, an ever-increasing portion of the projects administered by the Iowa DOT take place in urbanized areas. Most of this urban work involves construction on Primary Highways and Federal-Aid roadways through developed portions of counties and/or cities. Given the rural nature of the existing Iowa DOT specifications, it is often necessary to include supplemental specifications or special provisions on State projects in urban areas. In order to reduce the frequency of this, the Iowa DOT specifications need to be expanded in areas such as water main, storm sewer, sanitary sewer, utility accesses, trenching, traffic signals, etc., which are not typically encountered on rural projects. Given the increasing number of projects that involve urban work, it has been suggested the Iowa DOT utilize the Iowa Statewide Urban Specifications for Public Improvements as the construction specifications for urban roadway projects. The Iowa Statewide Urban Specifications for Public Improvements were developed by a group of central Iowa communities with a goal of providing uniformity in construction methods and materials. While the Urban Specifications began in central Iowa, their use has grown and are now used in hundreds of communities across the State of Iowa through the Statewide Urban Design and Specifications (SUDAS) program administered by the Center for Transportation Research and Education (CTRE) at Iowa State University. Based, in part, on the success seen in central Iowa, the SUDAS Specifications are being used and adopted by cities and counties across the state in increasing numbers. This widespread use has resulted in increased construction efficiency for contractors and cost savings to jurisdictions due to the consistency of construction practices being implemented from project to project and the familiarity of the documents by the parties involved in the development and construction of the projects. As the name SUDAS implies, the specifications were developed for public improvement projects located within urbanized areas. With that focus of the specifications, many jurisdictions, including the Iowa DOT, have determined the need to utilize portions of the SUDAS specifications on Primary Highway and Federal-Aid projects within urbanized areas. This project of reviewing the Iowa DOT and SUDAS specifications section by section was established to respond to the needs of these many jurisdictions. This project also includes the development of recommendations for possible changes allowing the SUDAS specifications to be utilized by incorporation or reference with the Iowa DOT specifications while avoiding inconsistencies. The utilization of the SUDAS specifications on urban Iowa DOT projects appears to be an obvious solution to the insufficient urban specifications within the Iowa DOT standard specifications. Many obstacles must first be overcome to prevent confusion to both the contractor and engineer, ensure consistency from project to project, and to maintain the rural and urban strengths and characteristics of the two manuals. This project outlines those obstacles and recommends a plan of attack to address the task of combining the two documents. for more::-> http://iowadot.gov/operationsresearch/reports/reports_pdf/hr_and_tr/reports/tr524.pdf |