IoWoman Januay/February 2008, Vol.38, no.1

Newsletter for the Iowa Commission on the Status of Women

IoWoman, March-April 2008, Vol.38, no.2

Newsletter for the Iowa Commission on the Status of Women

IoWoman May/June 2008, Vol.38, no.3

Newsletter for the Iowa Commission on the Status of Women

IoWoman, Fall 2008, Vol.38, no.5

Newsletter for the Iowa Commission on the Status of Women

IoWoman July/August 2008, Vol.38, no.4

Newsletter for the Iowa Commission on the Status of Women

Friday Facts, October 16, 2009, Vol. 38

Bureau of Nutrition and Health Promotion part of the Iowa Department of Public Health produces of weekly newsletter about the Iowa WIC Program for the State of Iowa citizen.

Iowa Crop and Weather Report, November 21, 2011, Vol. 11. no. 38

Report produced by the The Department of Agriculture and Land Stewardship, Climatology Bureau. Iowa Secretary of Agriculture Bill Northey today commented on the Iowa Crops and Weather report released by the USDA National Agricultural Statistical Service. The report is released weekly from April through October.

Iowa Crop and Weather Report, November 19, 2012, Vol. 12. no. 38

Report produced by the The Department of Agriculture and Land Stewardship, Climatology Bureau. Iowa Secretary of Agriculture Bill Northey today commented on the Iowa Crops and Weather report released by the USDA National Agricultural Statistical Service. The report is released weekly from April through October.

Footnotes, March 2013, Vol. 38, no.1-3

Monthly newsletter of State Library

Footnotes, June 2013, Vol. 38, no.4-6

Monthly newsletter of State Library

Footnotes, September 2013, Vol. 38, no.7-9

Monthly newsletter of State Library

University of Iowa School of Library and Information Science newsletter. 1996-1997, no. 38.

Newsletter from the University of Iowa School of Library and Information Science.

Footnotes, December 2013, Vol. 38, no.10-12

Monthly newsletter of State Library

Iowa Crop and Weather Report, November 24, 2013 Vol 13, no.38

Report produced by the The Department of Agriculture and Land Stewardship, Climatology Bureau. Iowa Secretary of Agriculture Bill Northey today commented on the Iowa Crops and Weather report released by the USDA National Agricultural Statistical Service. The report is released weekly from April through October.

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.