Forensic Investigation

Single Abstract

342822 - Wooden I-Joists Exposed to Floods, How Do They Perform?

Saturday, April 21
8:00 AM - 9:30 AM
Location: 202B

Engineered wooden I-joists are highly efficient and effective structural members. They are typically used in residential and commercial floor and roof diaphragms and there has been a significant increase in I-joists acceptance and use. The American Wood Council has established that wooden I-joists should be used in dry-service conditions or with moisture contents less than 16 percent. The effects of submerging wooden I-joists in water for extended periods of times is not well studied and if joists have been exposed to long periods of moisture, as is typical in flood events, they are often replaced. The replacement of the I-joists often leads to considerable expenses and the replacement of the entire structure. A small-scale study was initiated to begin to investigate the effects of submerging wooden I-joists in water for extended periods. Twelve I-joists were tested: two were tested dry, two were submerged for one day, two for two days, two for three days, two for five days, and the final two for seven days. The strength and load-deflection behavior of the I-joists were determined during the testing. The results and the impact of the results, as well as further research efforts will be discussed during this presentation. This presentation is of particular interest to practicing engineers who work in the area of forensic engineering and who encounter structures that have flooded.

John Cleary

Associate Professor
University of South Alabama

John Cleary is an Associate Professor of Civil Engineering at the University of South Alabama where he teaches undergraduate and graduate courses in Civil/Structural Engineering. John earned Bachelor and Master Degrees in Civil Engineering from Cleveland State University and a Ph.D. in Civil Engineering from Case Western Reserve University. His research and professional expertise includes concrete materials, construction vibrations, bridge engineering, wave impacts on bridge structures, and forensic engineering. John is an active member of ASCE at the local level and SEI at the local and national level, where among other things he serves as the chair of the SEI Student Initiatives Committee and the past chair of the LAD Excom. John is a registered Professional Engineer in Alabama and Florida.


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Sean Byrne

Structural Engineer
The Kleingers Group



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342822 - Wooden I-Joists Exposed to Floods, How Do They Perform?

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