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Shell Mechanical Engineering Senior Design Team

March 26, 2020

A Mechanical Engineering Senior Design team, sponsored by Shell, worked with CIEST to design, manufacture, and test the vibration responses of different piping systems with and without mitigation methods applied.

Example of a wire mesh sample

Wire Mesh Tension Testing

March 13, 2020

In summer 2019, former masters student David Kyle Anderson conducted 28 tension tests on 5 different types of wire mesh used for soil stabilization at CIEST.

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Evaluation of Hazard-Resistant Pipelines: Thermoplastic Pipe with Couplings

Sept. 27, 2019

The first in a series of testing programs at CU Boulder CIEST investigating performance of critical lifeline systems under extreme loading conditions.

EERI Students Standing by Shake Table

CU EERI Seismic Design Competition 2019

Aug. 29, 2019

The CU Earthquake Engineering Research Institute (EERI) Seismic Design Team competed in Vancouver for 2019 competition.

Canoe Racing

Rocky Mountain 2019 ASCE Conference

Aug. 29, 2019

American Society of Civil Engineers hosts the Rocky Mountain Regional Conference with help from CIEST.

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Seismic Evaluation of HSS Column Splices under Combined Loading

June 28, 2019

Project included development of a bi-directional loading system to apply simultaneous axial and lateral loading to 6 in. diameter columns and splice connections. Nearly 60 full-scale tests were conducted to support evaluation of a new structural building system for seismic applications. Accredited testing performed to ISO/IEC 17025 standard following protocols provided by FEMA 461.

Building

Liquefaction of Silty Sands

Feb. 18, 2019

Silty-sand is an extremely complex material. Made up of sand and fine-grained, non-plastic or plastic, granular mediums, it has been shown through element testing that even static prediction of the anticipated strengths and behaviors is challenging. The limited, available literature on the behavior of this material during dynamic events is contradictory, and has presented no useful conclusions on how to account for this material. Utilizing my experience with this material gained during my PhD, I intend to focus on how we can use silty-sands in the centrifuge to produce accountable results to predict the influence of this material on liquefaction; hopefully leading to incorporation into performance-based design.

Students working

Concrete Mixing and Testing

CIEST served as a resource to students in AREN 4830 (Sustainable Materials and Structures) as they designed and tested concrete mixes and considered the variable environmental impacts of their chosen materials.

Prep

Structural Testing of Steel Deck Diaphragm Assemblies

Structural assessment of cold-formed steel diaphragm assemblies was conducted in accordance with AISI S907. The cantilever-style tests were performed on 12 x 12 ft square specimens and included both static and cyclic test protocols. Displacements exceeding ± 5 in. were applied to capture peak and residual strength of the joist/deck/fastener assembly, providing data relevant to system evaluation for seismically active regions.

Materials previously weighed in the laboratory and ready for the elaboration of four concrete formulations

Incorporation of Metal-Laden Granular Activated Carbon in Concrete Formulations

The principal objective of this project is to translate the already successful obtained laboratory results to a practice in an industrial trial jointly with Forterra, which is an international company that is dedicated to the fabrication of concrete sewer pipelines and manholes.

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