Engineering Commons^™

Laboratory Approach To Modeling The Initiating Mechanism In The Piping Failure Of Sandy Soils, Olalekan O. Olorunsola

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This research intends to develop a testing apparatus to measure the critical gradient in sandy soils. The designed apparatus will be used in subsequent studies to develop a relationship between critical hydraulic gradient, soil properties and the inclination of the exit face.

This study evaluates several design modification to assess the effects of the modifications, and develop a design that most closely models the field mechanism of piping initiation. The design is initiated from a conceptual design and is executed into the first version. This design is called the Alpha Version. The next version, or more precisely, the Beta Version, …

Oscillation Phenomenon Of The New York Canal At The I-84 Overpass In Boise, Idaho, Erik W. Robison

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

As part of the Idaho Transportation department's GARVEE program, the 1-84 bridge structure at the New York Canal in Boise, Idaho, was widened in 2009. During the 2009 irrigation season, oscillation patterns were noticed at the bridge structure which resulted in erosion damage to the banks of the canal. After ITD consulted with Horrocks Engineers, a contract was established with the Utah Water Research Laboratory at Utah State University to construct a Froude scale model of the structure. The purpose of the model was to determine the cause of the oscillations, and develop an effective method to eliminate them. The …