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R.A. Smith National, Inc. - Newsroom

Jeff Perrin Joins R.A. Smith National’s Madison Office as Structural Engineer

by Jessica Pairrett 13. October 2016 09:56

Jeff Perrin

Jeff Perrin has joined the Madison office of R.A. Smith National as a structural engineer. Perrin has more than two years of structural design experience as well as prior experience as a construction foreman. His project management skills can be attributed to his experience as a construction foreman on several projects, including tilt-up projects in the Madison area as well as in Texas and Ohio. His skill set further includes Autocad and Revit which will be advantageous in his role at R.A. Smith National. With the addition of Perrin, R.A. Smith National has grown its structures practice to 16, including 13 structural engineers and 3 structural CAD technicians at the firm’s Brookfield and Madison locations.

Perrin holds two bachelor’s degrees – one in civil engineering and the other in building construction management, both from the University of Wisconsin Platteville.

Perrin resides in Dodgeville, 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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