REVIEW OF INCONSISTENCIES BETWEEN SUDAS AND IOWA DOT SPECIFICATIONS
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29-10-2010, 04:33 PM




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 project and implimentations 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 project and implimentations 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 project and implimentations. Given the increasing number of project and implimentations 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 project and implimentations.
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 and implimentation to project and implimentation and the
familiarity of the documents by the parties involved in the development and construction of the
project and implimentations.
As the name “SUDAS” implies, the specifications were developed for public improvement
project and implimentations 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 project and implimentations within urbanized areas. This project and implimentation
of reviewing the Iowa DOT and SUDAS specifications section by section was established to
respond to the needs of these many jurisdictions. This project and implimentation 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 project and implimentations 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 and implimentation to project and implimentation, and to maintain the rural and urban
strengths and characteristics of the two manuals. This project and implimentation outlines those obstacles and
recommends a “plan of attack” to address the task of combining the two documents.
for more::->


iowadot.gov/operationsresearch/reports/reports_pdf/hr_and_tr/reports/tr524.pdf

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04-04-2012, 05:01 PM

REVIEW OF INCONSISTENCIES BETWEEN SUDAS AND IOWA DOT SPECIFICATIONS



.pdf   tr524.pdf (Size: 576.65 KB / Downloads: 27)

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 project and implimentations 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.



Project Objectives

The objectives of this multi-part project and implimentation were to review the Iowa DOT Specifications and SUDAS
Specifications section by section and develop recommendations for possible changes that will
allow the two specifications to be used together. This original project and implimentation proposal included six main
objectives as follows:
1. Identification of Cross References:
For each SUDAS section, identify all references to SUDAS Division

1. For references to

Division 1, propose changes to either the DOT or SUDAS specifications that will allow use
of DOT Division 11 with SUDAS Divisions 2-11 only. Also review Division 11 of the Iowa
DOT Specifications for references to other Iowa DOT specifications that would be in conflict
if Divisions 2 through 11 of SUDAS were used.

2. Uniformity of Defined Terms

Compare the defined terms used in the DOT and SUDAS specifications and propose the
necessary modifications to each specification to develop a unified set of defined terms.

3. Identification of Duplicate and Eliminated Bid Items

Review SUDAS and DOT bid items and list those that would be duplicated (i.e., items
covered in both DOT Division 11 and SUDAS Divisions 2-11) or omitted (i.e., items covered
only in either DOT Divisions 20-41 or SUDAS Division 1) if the “front-end” (contractual)
Iowa DOT Specifications are used with the “back-end” (technical) specifications of SUDAS.


Summary:
Throughout the course of this project and implimentation, a large number of differences were identified between the
Iowa DOT and SUDAS specifications. These included differences in definitions, units of
measurement and payment, construction materials, construction methods, and details. Addressing
all of these differences, and obtaining a pair of specifications that can be used together, without
conflict, will be a daunting task.
It should be noted however, that while resolving all of the differences between the two documents
will be a major undertaking, it was apparent during the committee meetings that representatives
from both sides were open to suggestion and willing to change for the overall benefit of the
public. With cooperation from both sides, the elimination of conflicts and possible merging of
the two documents may take time, but is certainly achievable.
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