80 resultados para Flip Chip Over Hole


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The objective of the study presented in this report was to document the launch of the Iowa River Bridge and to monitor and evaluate the structural performance of the bridge superstructure and substructure during the launch. The Iowa Department of Transportation used an incremental launching method, which is relatively unique for steel I-girder bridges, to construct the Iowa River Bridge over an environmentally sensitive river valley in central Iowa. The bridge was designed as two separate roadways consisting of four steel plate girders each that are approximately 11 ft deep and span approximately 301 ft each over five spans. The concrete bridge deck was not placed until after both roadways had been launched. One of the most significant monitoring and evaluation observations related to the superstructure was that the bottom flange (and associated web region) was subjected to extremely large stresses during the crossing of launch rollers. Regarding the substructure performance, the column stresses did not exceed reasonable design limits during the daylong launches. The scope of the study did not allow adequate quantification of the measured applied launch forces at the piers. Future proposed esearch should provide an opportunity to address this. The overall experimental performance of the bridge during the launch was compared with the predicted design performance. In general, the substructure design, girder contact stress, and total launching force assumptions correlated well with the experimental results. The design assumptions for total axial force in crossframe members, on the other hand, differed from the experimental results by as much as 300%.

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Audit report on a review of selected general and application controls over the University of Northern Iowa’s Modern Executive Management Financial Information System (MEMFIS) human resources and payroll modules for the period May 22, 2006 through June 12, 2006.

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Report on a review of selected general and application controls over the Iowa Department of Transportation’s Resource Management System for the period May 5, 2006 through August 4, 2006.

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Audit report on the review of selected general and application controls over the State University of Iowa University of Iowa) ProTrav system for the period June 5, 2006 through July 28, 2006

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Report on a review of selected general and application controls over the Iowa Public Employees’ Retirement System (IPERS) Benefits Administration System for the period April 23, 2007 through May 16, 2007

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Report on the review of selected general and application controls over the State University of Iowa (University of Iowa) PeopleSoft General Ledger system for the period June 4, 2007 through July 27, 2007

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Report on a review of selected general and application controls over the Iowa State University of Science and Technology payroll system for the period March 27 through May 11, 2007

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Report on a review of selected general and application controls over the Iowa State University of Science and Technology tuition and fees system for the period of April 11 through May 2, 2008

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Report on a review of selected general and application controls over the University of Northern Iowa’s tuition and fees system for the period May 24, 2007 through July 3, 2007

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Report on a review of selected general and application controls over the Iowa Department of Transportation’s Contractor Pay System for the period May 5, 2008 through July 31, 2008

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Report on the review of selected general and application controls over the State University of Iowa PeopleSoft Human Resources Information System (HRIS) for the period June 3, 2008 through July 25, 2008

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Report on a review of selected general and application controls over the Iowa Public Employees’ Retirement System (IPERS) I-Que Pension Administration System for the period March 24, 2009 through April 22, 2009