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Project Details
STATUS

Completed

START DATE

02/01/98

END DATE

12/31/98

RESEARCH CENTERS InTrans, CTRE
SPONSORS

Iowa Department of Transportation
Iowa State University Management

Researchers
Principal Investigator
Reginald Souleyrette

Associate Director for Transportation Planning and Information Systems

About the research

The primary objective of this project was to provide appropriate hands-on GIS training to Maintenance Division staff. The training consisted of three parts: a discussion of general GIS concepts, an introduction to specific software (Intergraph?s GeoMedia) tools and capabilities, and an overview of management of roadway/roadside feature inventory data within GIS. This project focused on the procedures necessary to develop and utilize a linearly referenced roadway network to manage roadway/roadside feature inventory data. The procedures apply to MGE Segment Manager 6 and 7, and GeoMedia 2.0. Under these software specifications, all distributed attribute tables, i.e. tables describing features occurring at different locations and extents along the roadway, must exist within a single RIS schema, on a centrally located database. All transportation centers would provide their inventory data to designated individuals at the DOT central office, and the data would then be accessed over the department?s local area network (LAN).

Project Details
STATUS

Completed

START DATE

05/01/85

END DATE

09/01/86

RESEARCH CENTERS InTrans, BEC
SPONSORS

Iowa State University Management
Weyerhauser Company

Researchers
Principal Investigator
Terry Wipf

Faculty Affiliate

Principal Investigator
Wayne Klaiber

Faculty Affiliate

About the research

In 1977 the Weyerhaeuser Company developed a short span glued laminated timber bridge that does not require any stringers. The bridge consists of glued laminated timber panels approximately 48 in. wide that are placed across the span in the direction of traffic. The panels are connected by stiffener beams that run in a transverse direction to the longitudinal axis of the panels and provide transverse live load distribution within the bridge. Typical maximum span lengths are 40 ft. This study focused on the structural behavior of deck panels and stiffener beams through laboratory experimental testing of a full scale bridge. In addition, finite element analytical models were developed to further study the bridge behavior. The experimental testing investigated various stiffener beam arrangements, two different connector types, various bridge widths and various truck load configurations. Deflection and strain data were collected.

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