Special investigation of the City of West Liberty for the period July 1, 2010 through January 31, 2014

Special investigation of the City of West Liberty for the period July 1, 2010 through January 31, 2014

Special investigation of the Iowa County Treasurer’s Office for the period January 1, 2005 through June 30, 2011

Special investigation of the Iowa County Treasurer’s Office for the period January 1, 2005 through June 30, 2011

Special investigation of the Sac County Treasurer’s Office Motor Vehicle Department for the period January 1, 2010 through February 27, 2014

Special investigation of the Sac County Treasurer’s Office Motor Vehicle Department for the period January 1, 2010 through February 27, 2014

Investigation of Field Corrosion Performance and Bond/Development Length of Galvanized Reinforcing Steel, TR-666, 2014

In reinforced concrete systems, ensuring that a good bond between the concrete and the embedded reinforcing steel is critical to long-term structural performance. Without good bond between the two, the system simply cannot behave as intended. The bond strength of reinforcing bars is a complex interaction between localized deformations, chemical adhesion, and other factors. Coating of reinforcing bars, although sometimes debated, has been commonly found to be an effective way to delay the initiation of corrosion in reinforced concrete systems. For many years, the standard practice has been to coat reinforcing steel with an epoxy coating, which provides a barrier between the steel and the corrosive elements of water, air, and chloride ions. Recently, there has been an industry-led effort to use galvanizing to provide the protective barrier commonly provided by traditional epoxy coatings. However, as with any new structural product, questions exist regarding both the structural performance and corrosion resistance of the system. In the fall of 2013, Buchanan County, Iowa constructed a demonstration bridge in which the steel girders and all internal reinforcing steel were galvanized. The work completed in this project sought to understand the structural performance of galvanized reinforcing steel as compared to epoxy-coated steel and to initiate a long-term corrosion monitoring program. This work consisted of a series of controlled laboratory tests and the installation of a corrosion monitoring system that can be observed for years in the future. The results of this work indicate there is no appreciable difference between the bond strength of epoxy-coated reinforcing steel and galvanized reinforcing steel. Although some differences were observed, no notable difference in either peak load, slip, or failure mode could be identified. Additionally, a long-term monitoring system was installed in this Buchanan County bridge and, to date, no corrosion activity has been identified.

Report on a special investigation of the Martensdale-St. Marys Community School District for the period July 1, 2009 through April 30, 2014

Report on a special investigation of the Martensdale-St. Marys Community School District for the period July 1, 2009 through April 30, 2014

Report on a special investigation of the Mid-Prairie Community School District for the period July 1, 2012 through June 30, 2014

Report on a special investigation of the Mid-Prairie Community School District for the period July 1, 2012 through June 30, 2014

Report on a special investigation of the University of Northern Iowa International Dance Theatre for the period December 1, 2005 through February 28, 2014

Report on a special investigation of the University of Northern Iowa International Dance Theatre for the period December 1, 2005 through February 28, 2014

Report on a special investigation of Café DMACC within Des Moines Area Community College campus in Ankeny, Iowa for the period January 4, 2013 through May 2, 2014

Report on a special investigation of Café DMACC within Des Moines Area Community College campus in Ankeny, Iowa for the period January 4, 2013 through May 2, 2014

Report on a special investigation of the City of Vining for the period May 1, 2008 through May 31, 2014

Report on a special investigation of the City of Vining for the period May 1, 2008 through May 31, 2014

Report on a special investigation of the City of Woodbine Volunteer Fire Department for the period January 1, 2009 through March 31, 2014

Report on a special investigation of the City of Woodbine Volunteer Fire Department for the period January 1, 2009 through March 31, 2014

Neither Fair Nor Impartial: An Investigation into the Iowa Department of Corrections’ Sanctions Against an Inmate, February 16, 2015

An Investigation into the Iowa Department of Corrections’ Sanctions Against an Inmate

Report on a special investigation of the City of Pacific Junction for the period July 1, 2008 through June 30, 2013

Report on a special investigation of the City of Pacific Junction for the period July 1, 2008 through June 30, 2013

Report on a special investigation of the Center for Behavioral Health for the period January 1, 2011 through May 21, 2013

Report on a special investigation of the Center for Behavioral Health for the period January 1, 2011 through May 21, 2013

Investigation of the Lane-Wells Road Logger, HR-113, 1966

The Lane-Wells Road Logger was utilized primarily to determine the feasibility of employing such a device for moisture and density control in Iowa highway construction. A secondary objective was the use of the Road Logger to obtain information concerning moisture content and density during and after construction. Correlation studies with conventional test results required a small portion of the lease period. Practically all phases of construction and most materials utilized in base and surface courses were surveyed. Results of this study were good, in general, with the Road Logger indicating dry density slightly higher and the moisture content slightly lower than conventional results in most instances. Economic feasibility seemed to pose the greatest problem for the acceptance of the Road Logger as a standard compaction control device. It would appear from the findings of this study that probably only large projects, or several smaller contracts tested simultaneously, could justify the expense of the Logger. A total of about 128 miles were surveyed with the Logger during the lease period. Approximately 16 days of downtime due to minor breakdowns were recorded. Inclement weather forcing construction delays resulted in several idle days in which the Logger's full capabilities were not realized.

Report on a special investigation of the band program of the Monticello Community School District for the period January 1, 2009 through December 31, 2013

Report on a special investigation of the band program of the Monticello Community School District for the period January 1, 2009 through December 31, 2013