Case Study of Seasonal Variation in the Subgrade and Subbase Layers of Highway US 20, TR-516, 2008

Seasonal variations in ground temperature and moisture content influence the load carrying capacity of pavement subgrade layers. To improve pavement performance, pavement design guidelines require knowledge of environmental factors and subgrade stiffness relationships. As part of this study, in-ground instrumentation was installed in the pavement foundation layers of a newly constructed section along US Highway 20 near Fort Dodge, Iowa, to monitor the seasonal variations in temperature, frost depth, groundwater levels, and moisture regime. Dynamic cone penetrometer (DCP), nuclear gauge, and Clegg hammer tests were performed at 64 test points in a 6-ft x 6-ft grid pattern to characterize the subgrade stiffness properties (i.e., resilient modulus) prior to paving. The purpose of this paper is to present the field instrumentation results and the observed changes in soil properties due to seasonal environmental effects.

Monday Morning Eye Opener, April 20, 2015

Weekly Newsletter from the Northwest District Office for libraries containing programs, activities, classes for the upcoming week.

Monday Morning Eye Opener, July 20, 2015

Weekly Newsletter from the Northwest District Office for libraries containing programs, activities, classes for the upcoming week.

Iowa Crop Progress & Condition, July 20, 2015

Report produced by the The Department of Agriculture and Land Stewardship, Climatology Bureau. Weather report released by the USDA National Agricultural Statistical Service. The report is released weekly from April through October. Formally titled: Iowa Crop and Weather Report

The Revenue Estimating Conference (REC) Estimate of General Fund Receipts Report, March 20, 2014

State general fund revenue estimates are generated by the Iowa Revenue Estimating Conference (REC). The REC is comprised of the Governor or their designee, the Director of the Legislative Services Agency, and a third person agreed upon by the other two members. The REC meets periodically, generally in October, December, and March/April. The Governor and the Legislature are required to use the REC estimates in preparing the state budget.

Aging Watch, April 20, 2012, Vol. 12, no. 1

The reintroduction of the Iowa Department on Aging legislative and policy update, now known as “Aging Watch.” The Department is providing this update to better inform you about policy affecting older Iowans. In addition to policy updates from the statehouse and the nation’s capitol, you’ll learn about Department programs and changes affecting the landscape. As you’ll learn reading this and future editions, big changes are coming for the Iowa Aging Network. Over the next year the Department will be reducing the number of local Area Agencies on Aging, as required by legislative action. Not surprisingly, this is a major change for everyone.

Iowa AgriNews, October 8, 2015, Vol. 15, no. 20

Crop and livestock summaries for the state of Iowa, produced by the Iowa Department of Agriculture. Previously Agri-News

List of Bid Proposal Holders; Letting date: October 20, 2015

List of Bid Proposal Holders

Ag Decision Maker, November 2015, Vol. 20, no. 1

A Business Newsletter for Agriculture

Iowa Department of Transportation Major Items - Preliminary Quantity Report, January 20, 2016; With Addendums

Weekly letting report

Certified Budget Report FY 2011, April 20, 2010

The Department of Education, Division of Community Colleges and Workforce Preparation staff annually prepares a Community College Certified Budget Report. This report provides information to assist the State Board of Education.

Certified Budget Report FY 2012, April 20, 2011

The Department of Education, Division of Community Colleges and Workforce Preparation staff annually prepares a Community College Certified Budget Report. This report provides information to assist the State Board of Education.

Iowa 58 Viking Road Corridor from U.S. 20 to Greenhill Road in Cedar Falls, Iowa, NHSX-U-58-1(91)--8S-07, 2015

The Proposed Action consists of the improvement of Iowa Highway 58 (IA 58) from U.S. Highway 20 (U.S. 20) north to Greenhill Road in Cedar Falls (Black Hawk County, Iowa). The improvement would include limiting at-grade access to IA 58 by adding one or more interchanges to the corridor which would be located at Viking Road, Greenhill Road, and reconfiguring the U.S. 20 interchange (Figure 1). In order to construct these interchanges and associated ramps, the pavement of IA 58 would be reconstructed. In a couple of locations, the alignment of IA 58 would be shifted.

Ag Decision Maker, December 2015, Vol. 20, no. 2

A Business Newsletter for Agriculture

EPI Update, November 20, 2015

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health.