Dynamics of Highway Bridges, Iowa Highway Research Board Bulletin 17, 1960

Joint Publications from Iowa Engineering Experiment Station - Bulletin No. 188 and Iowa Highway Research Board - Bulletin No. 17. In the design of highway bridges, the 'static live load is multiplied by a factor to compensate for the dynamic effect of moving vehicles. This factor, commonly referred to as an impact factor, is intended to provide for the dynamic response of the bridge to moving loads and suddenly applied forces. Many investigators have published research which contradicts the current impact formula 1,4,17. Some investigators feel that the problem of impact deals not only with the increase in over-all static live load but that it is an integral part of a dynamic load distribution problem. The current expanded highway program with the large number of bridge structures required emphasizes the need for investigating some of the dynamic behavior problems which have been generally ignored by highway engineers. These problems generally result from the inability of a designer to predict the dynamic response of a bridge structure. Many different investigations have been made of particular portions of the overall dynamic problem. The results of these varied investigations are inevitably followed by a number of unanswered questions. Ironically, many of the unanswered questions are those which are of immediate concern in the design of highway bridges, and this emphasizes the need for additional research on the problem of impact.

Journal du marquis de Dangeau. Tome 17 / publié en entier pour la première fois par MM. Soulié, Dussieux, de Chennevières, Mantz, de Montaiglon ; avec les additions inédites du duc de Saint-Simon publiées par M. Feuillet de Conches

Comprend : Additions inédites du duc de Saint-Simon au journal du marquis de Dangeau

Iowa Department of Transportation Major Items - Preliminary Quantity Report, May 17, 2016; With Addendums

Weekly letting report

List of Bid Proposal Holders; Letting date: May 17, 2016

List of Bid Proposal Holders

Iowa Influenza Surveillance Network: Weekly Activity Report Week 41, October 17, 2015

The Iowa Influenza Surveillance Network (IISN) was established in 2004, though surveillance has been conducted at the Iowa Department of Public Health. Schools and long-term care facilities report data weekly into a Web-based reporting system. Schools report the number of students absent due to illness and the total enrolled. Long-term care facilities report cases of influenza and vaccination status of each case. Both passively report outbreaks of illness, including influenza, to IDPH.

Assurances terrestres . Loi du 13 juillet 1930 relative au contrat d'assurance. [- Loi du 17 avril 1942 relative aux contrats d'assurance libellés en monnaies étrangères.]

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[1 lettre de Auguste-Emmanuel Vaucorbeil à Jacques-Léopold Heugel, 17 avril 1880]

Dit qu'il sera "probablement demandé au ministère [le len]demain matin" et qu'il écrira ensuite. Prie son ami d'avertir MM. A. Thomas et J. Barbier et lui demande d'être présent au rendez-vous.

[1 lettre de Auguste-Emmanuel Vaucorbeil à Jacques-Léopold Heugel, 17 novembre 1880]

"J'ai remercié M. Michault et j'accepte sa restriction. Voici le morceau avec les paroles nouvelles. Pour graver, voir la musique du volume." "Ci-joint l'autorisation de M. Michault"