Report on the Iowa Department of Inspections and Appeals for the year ended June 30, 2015

Report on the Iowa Department of Inspections and Appeals for the year ended June 30, 2015

Agreed-upon procedures reports on twelve agreements between the Bureau of Nutrition and Health Services of the Iowa Department of Education and child care centers for the period October 1, 2014 through September 30, 2015

Agreed-upon procedures reports on twelve agreements between the Bureau of Nutrition and Health Services of the Iowa Department of Education and child care centers for the period October 1, 2014 through September 30, 2015

Report on the Iowa Department of Agriculture and Land Stewardship for the year ended June 30, 2015

Report on the Iowa Department of Agriculture and Land Stewardship for the year ended June 30, 2015

Pilot Study on Improving the Efficiency of Transportation Projects Using Laser Scanning, 2003

Laser scanning is a terrestrial laser-imaging system that creates highly accurate three-dimensional images of objects for use in standard computer-aided design software packages. This report describes results of a pilot study to investigate the use of laser scanning for transportation applications in Iowa. After an initial training period on the use of the scanner and Cyclone software, pilot tests were performed on the following projects: intersection and railroad bridge for training purposes; section of highway to determine elevation accuracy and pair of bridges to determine level of detail that can be captured; new concrete pavement to determine smoothness; bridge beams to determine camber for deck-loading calculations; stockpile to determine volume; and borrow pit to determine volume. Results show that it is possible to obtain 2-6 mm precision with the laser scanner as claimed by the manufacturer compared to approximately one-inch precision with aerial photogrammetry using a helicopter. A cost comparison between helicopter photogrammetry and laser scanning showed that laser scanning was approximately 30 percent higher in cost depending on assumptions. Laser scanning can become more competitive to helicopter photogrammetry by elevating the scanner on a boom truck and capturing both sides of a divided roadway at the same time. Two- and three-dimensional drawings were created in MicroStation for one of the scanned highway bridges. It was demonstrated that it is possible to create such drawings within the accuracy of this technology. It was discovered that a significant amount of time is necessary to convert point cloud images into drawings. As this technology matures, this task should become less time consuming. It appears that laser scanning technology does indeed have a place in the Iowa Department of Transportation design and construction toolbox. Based on results from this study, laser scanning can be used cost effectively for preliminary surveys to develop TIN meshes of roadway surfaces. It also appears that this technique can be used quite effectively to measure bridge beam camber in a safer and quicker fashion compared to conventional approaches. Volume calculations are also possible using laser scanning. It seems that measuring quantities of rock could be an area where this technology would be quite beneficial since accuracy is more important with this material compared to soil. Other applications for laser scanning could include developing as-built drawings of historical structures such as the bridges of Madison County. This technology could also be useful where safety is a concern such as accurately measuring the surface of a highway active with traffic or scanning the underside of a bridge damaged by a truck. It is recommended that the Iowa Department of Transportation initially rent the scanner when it is needed and purchase the software. With time, it may be cost justifiable to purchase the scanner as well. Laser scanning consultants can be hired as well but at a higher cost.

Evaluation of Weather Forecasting Services for the Iowa Department of Transportation, CTRE Project 02-126, 2003

The objective of the evaluation of the weather forecasting services used by the Iowa Department of Transportation is to ascertain the accuracy of the forecasts given to maintenance personnel and to determine whether the forecasts are useful in the decision-making process and whether the forecasts have potential for improving the level of service. The Iowa Department of Transportation has estimated the average cost of fighting a winter storm to be about $60,000 to $70,000 per hour. This final report is to provide an evaluation report describing the collection of weather data and information associated with the weather forecasting services provided to the Iowa Department of Transportation and its maintenance activities and to determine their impact in winter maintenance decision-making.

Iowa Department of Transportation : A Design for Growth, 1971

This report has been prepared to provide a succinct documentation of the results of an intensive "finding" as to the requirement for an Iowa Department of Transportation, the recommended general organizational characteristics, and the implementation process requisite to instituting an Iowa Department of Transportation. This report specifies, in summary, the systematic procedure employed in the analysis, followed by a presentation of the fundamental concepts associated with a department of transportation and documentation of the "need" for a state department of transportation. The majority of the report is devoted to presentation of a best judgment as to how an Iowa Department of Transportation should be organized and implemented. The report concludes with a discussion of a recommended approach to the implementation of the department, and issues and recommendations for review.