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

Monthly newsletter of State Library

Footnotes, June 2014, Vol. 39, no.4-6

Monthly newsletter of State Library

Constitution of Iowa, 1857.

A constitutional convention convened in Iowa City on January 19, 1857 ending on March 5, 1857. The convention drafted and approved the Constitution of Iowa. This constitution is the still in use today by the State of Iowa. It has been amended many times from 1868 thru 2010. NOTE: A .tiff file version of this document is available. The file is very large. Contact the State Library of Iowa to inquire about receiving this version.

Footnotes, January, February, March 2014, Vol. 39, no. 1-3

Monthly newsletter of State Library

Preserving Iowa's Constitution, 2014.

This video details the digital scanning of the 1857 State of Iowa Constitution which was done in partnership by the Secretary of State's Office and the State Library of Iowa on August 13, 2014. (Time 14:48) NOTE: this is a large file (267MB) and may take a long time to download.

Footnotes, September 2014, Vol. 39, no.7-9

Monthly newsletter of State Library

Footnotes, December 2014, Vol. 39, no.10-12

Monthly newsletter of State Library

Footnotes, March 2015, Vol. 40, no.1-3

Monthly newsletter of State Library

Evaluation of the Baladi Indirect Tensile Apparatus, MLR-89-08, 1990

Dr. Gilbert Y. Baladi of Michigan State University has developed a new device intended for reliable determination of asphalt concrete mechanical properties such as Poisson's ratio, resilient modulus, and indirect tensile strength. The device is the result of an effort to improve upon procedures and equipment currently available for evaluation of mechanical properties. A duplicate of this device was fabricated in the Iowa Department of Transportation, Materials Lab Machine Shop in 1989. This report details the results of an evaluation of the effectiveness of the device in testing Marshall specimens for indirect tensile strength as compared to results obtained with standard equipment described in AASHTO T-283. Conclusions of the report are: l. Results obtained with the Baladi device average 6 to 8 percent higher than those obtained with the standard device. 2. The standard device exhibited a slightly greater degree of precision than did the Baladi device. 3. The Baladi device is easier and quicker to use than the standard apparatus. 4. It may be possible to estimate indirect tensile strength from the stability/flow ratio by dividing by factors of 1.8 and 1.5 for 50 blow and 75 blow mixes respectively.