281 resultados para police investigation
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Report on a special investigation of the Cerro Gordo County Management Information Systems (MIS) Department for the period January 1, 2008 through July 31, 2013
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The main sources of coarse aggregate for secondary slip form paving in Southwest Iowa exhibit undesirable "D" cracking. "D" cracking is a discoloration of the concrete caused by fine, hairline cracks. These cracks are caused by the freezing and thawing of moisture inside the coarse aggregate. The cracks are often hour glass shaped, are parallel to each other, and occur along saw joints. The B-4, a typical secondary mix, utilizes 50% fine aggregate and 50% coarse aggregate. It has been proposed that a concrete mix with less coarse aggregate and more fine aggregate might impede this type of deterioration. The Nebraska Standard 47B Mix, a 70% fine aggregate, and 30% coarse aggregate mix, as used by Nebraska Department of Roads produces concrete with ultimate strengths in excess of 4500 psi but because of the higher cost of cement (it is a six bag per cubic yard mix) is not competitive with our present secondary mixes. The sands of Southwest Iowa generally have poorer mortar strengths than the average Iowa Sand. Class V Aggregate also found in Southwest Iowa has a coarser sand fraction, therefore it has a better mortar strength, but exhibits an acidic reaction and therefore must be·used with limestone. This illustrates the need to find a mix for use in Southwest Iowa that possesses adequate strength and satisfactory durability at a low cost. The purpose of this study is to determine a concrete mix with an acceptable cement content which will produce physical properties similar to that of our present secondary paving mixes.
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Report on a special investigation of the University of Iowa Athletic Ticket Office and the operations of the Hawkeye Express for the period September 1, 2005 through November 30, 2013
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Report on a special investigation of the Malvern Public Library for the period July 1, 2006 through October 31, 2013
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Over a three-month period in 2010, our office received three complaints alleging the Department of Human Services (DHS) was lax in its oversight of a licensed child care center. It was alleged that the DHS did not sanction the child care center in any meaningful way after finding several violations associated with children engaging in sexual behavior with each other at the center. This involved the Child Development Center (CDC) in Des Moines, which is owned and operated by Children and Families of Iowa (CFI).
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Report on a special investigation of the State Public Defender’s Office for the period July 1, 2009 through August 31, 2013
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Report on a special investigation of the Mahaska County Soil and Water Conservation District for the period March 24, 2006 through August 31, 2013
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Report on a special investigation of the Monona County Auditor’s Office for the period January 1, 2011 through December 31, 2013
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Special investigation of the City of West Liberty for the period July 1, 2010 through January 31, 2014
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Special investigation of the Iowa County Treasurer’s Office for the period January 1, 2005 through June 30, 2011
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Special investigation of the Sac County Treasurer’s Office Motor Vehicle Department for the period January 1, 2010 through February 27, 2014
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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.
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Report on a special investigation of the Martensdale-St. Marys Community School District for the period July 1, 2009 through April 30, 2014
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Report on a special investigation of the Mid-Prairie Community School District for the period July 1, 2012 through June 30, 2014
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Report on a special investigation of the University of Northern Iowa International Dance Theatre for the period December 1, 2005 through February 28, 2014
