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Platteville Students Learn Benefits of LiDAR & UAS Tech for Structural Inspections

by Jessica Pairrett 5. May 2017 09:29

Firm’s Diekfuss and Chapman teach engineering students how LiDAR and UAS technology benefit inspections of structures

 

Diekfuss and Chapman present on technology used during structural inspections

On April 20, Joe Diekfuss and Jon Chapman of R.A. Smith National presented to the University of Wisconsin–Platteville's American Society of Civil Engineers (ASCE) student chapter. Students listened to the presentation, “Incorporating LiDAR and UAS Technology in the Inspection and Evaluation of Existing Structures,” during their ASCE chapter’s final general business meeting of the year.

The presentation focused on recently completed case studies: (1) Settlement Monitoring of a Residence, Madison, Wis.; and (2) Structural Evaluation of the Taylor Hill Reservoir, Sheboygan, Wis. Through the presentation of these case studies, Diekfuss and Chapman discussed the benefits of using LiDAR and UAS technology during structural inspections. LiDAR and UAS technology provide increased efficiency, improved safety and accurate quantification of notably deficient areas discovered during structural inspections.

Diekfuss is a structural engineer and National Highway Institute (NHI) certified bridge inspector. Chapman is a survey project manager and Federal Aviation Administration (FAA) certified UAS pilot.

Case studies allowed students to see how LiDAR and UAS technology aid in the evaluation of structures through real-world examples. 

Case Study 1: Settlement Monitoring of a Residence, Madison, Wis. 

Case Study 2: Structural Evaluation of the Taylor Hill Reservoir, Sheboygan, Wis.

Diekfuss Publishes Three Articles in Journal of Structural Engineering

by Jessica Pairrett 11. October 2016 11:20

Joe Diekfuss, Ph.D., P.E.

Co-authors Joe Diekfuss, Ph.D., P.E. (pictured at right), R.A. Smith National structural engineer, and Chris Foley, Ph.D., P.E., Marquette University Professor and Chair, Department of Civil, Construction and Environmental Engineering, recently published three articles in the American Society of Civil Engineer’s (ASCE) Journal of Structural Engineering. The articles provide detailed summaries for portions of a recently completed research effort funded by the Wisconsin Highway Research Program and conducted at Marquette University.

The research focused on formulating a reliability-based approach for prescribing inspection intervals for mast-arm sign support structures throughout the State of Wisconsin. The results can be used by the engineering community to establish inspection intervals that better align inspection needs with limited fiscal and human resources.

The inspection intervals for each sign support correspond to user-specified levels of fatigue-induced cracking risk within their welded tube-to-plate connections. The fatigue-induced cracking risk is dependent upon a number of variables including location of the structure within the state, orientation of the mast-arm relative to north, fatigue detail category used at its tube-to-plate connection, the amount of signage it supports and the length of time it has been in service.

Click here to read more and view the abstracts.

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