Iowa Braille and Sight Saving School, June 30, 2002

State Agency Audit Report

Report of Recommendations to the Iowa Braille and Sight Saving School, June 30, 2003

State Agency Audit Report

Report of Recommendations to the Iowa Braille and Sight Saving School, June 30, 2004

State University Audit Report

Report of Recommendations to the Iowa Braille and Sight Saving School, June 30, 2005

Other Audit Reports - Regent Institutions

Audit report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2006

Audit report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2006

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2007

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2007

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2008

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2008

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2009

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2009

Iowa Energy Savings Guide Saving Energy Saves You Money, 2003

This guide describes things you can do around your home to reduce your utility bills and save you money. It offers some easy, practical steps that you can take to save energy and reduce the cost of heating and cooling your home. There are also tips on ways to reduce your electric and water usage. In addition, energy related health and safety information is also included. So, take a few minutes to read this guide and save it so you can refer to it in the future.

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2010

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2010

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2011

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2011

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2012

Report on the Iowa Braille and Sight Saving School, Vinton, Iowa, for the year ended June 30, 2012

Strengthening of Existing Continuous Composite Bridges, HR-287, 1987

Research was conducted to investigate the potential of strengthening continuous bridges by post-tensioning. The study included the following: a literature review, selection and rating of a prototype continuous composite bridge, tests of a one-third-scale continuous composite bridge model, finite element analysis of the bridge model, and tests of a full-scale composite beam mockup for a negative moment region. The study results indicated that the strengthening of continuous, composite bridges is feasible. The primary objective in applyig the post-tensioning should be to provide moments opposite to those produced by live and dead loads. Longitudinal distribution of that post-tensioning always must be considered if only exterior or only interior beams are post-tensioned. Testing and finite element analysis showed that post-tensioning of positive moment regions with straight tendons was more effective than post-tensioning negative moment regions with straight tendons. Changes in tension in tendons may be either beneficial or detrimental when live loads are applied to a strengthened bridge and thus must be carefully considered in design.

Strengthening of an Existing Continuous-Span, Steel-Beam, Concrete-Deck Bridge by Post-Tensioning, HR-308, 1990

The need to upgrade a large number of understrength and obsolete bridges in the U.S. has been well documented in the literature. Through several Iowa DOT projects, the concept of strengthening simple-span bridges by post-tensioning has been developed. The purpose of the project described in this report was to investigate the use of post-tensioning for strengthening continuous composite bridges. In a previous, successfully completed investigation, the feasibility of strengthening continuous, composite bridges by post-tensioning was demonstrated on a laboratory 1/3-scale-model bridge (3 spans: 41 ft 11 in. x 8 ft 8 in.). This project can thus be considered the implementation phase. The bridge selected for strengthening was in Pocahontas County near Fonda, Iowa, on County Road N28. With finite element analysis, a post-tensioning system was developed that required post-tensioning of the positive moment regions of both the interior and exterior beams. During the summer of 1988, the strengthening system was installed along with instrumentation to determine the bridge's response and behavior. Before and after post-tensioning, the bridge was subjected to truck loading (1 or 2 trucks at various predetermined critical locations) to determine the effectiveness of the strengthening system. The bridge, with the strengthening system in place, was inspected approximately every three months to determine any changes in its appearance or behavior. In 1989, approximately one year after the initial strengthening, the bridge was retested to identify any changes in its behavior. Post-tensioning forces were removed to reveal any losses over the one-year period. Post-tensioning was reapplied to the bridge, and the bridge was tested using the same loading program used in 1988. Except for at a few locations, stresses were reduced in the bridge the desired amount. At a few locations flexural stresses in the steel beams are still above 18 ksi, the allowable inventory stress for A7 steel. Although maximum stresses are above the inventory stress by about 2 ksi, they are about 5 ksi below the allowable operating stress; therefore, the bridge no longer needs to be load-posted.

Strengthening of an Existing Continuous-Span, Steel-Stringer, Concrete-Deck Bridge, HR-333, 1993

The need to upgrade understrength bridges in the United States has been well documented in the literature. The concept of strengthening steel stringer bridges in Iowa has been developed through several Iowa DOT projects. The objective of the project described in this report was to investigate the use of one such strengthening system on a three-span continuous steel stringer bridge in the field. In addition, a design methodology was developed to assist bridge engineers with designing a strengthening system to obtain the desired stress reductions. The bridge selected for strengthening was in Cerro Gordo County near Mason City, Iowa on County Road B65. The strengthening system was designed to remove overstresses that occurred when the bridge was subjected to Iowa legal loads. A two part strengthening system was used: post-tensioning the positive moment regions of all the stringers and superimposed trusses in the negative moment regions of the two exterior stringers at the two piers. The strengthening system was installed in the summers of 1992 and 1993. In the summer of 1993, the bridge was load tested before and after the strengthening system was activated. The load test results indicate that the strengthening system was effective in reducing the overstress in both the negative and positive regions of the stringers. The design methodology that was developed includes a procedure for determining the magnitude of post-tensioning and truss forces required to strengthen a given bridge. This method utilizes moment and force fractions to determine the distribution of strengthening axial forces and moments throughout the bridge. Finite element analysis and experimental results were used in the formulation and calibration of the methodology. A spreadsheet was developed to facilitate the calculation of these required strengthening forces.