TigerStream 6: Silt Fence Geotextile Research скачать в хорошем качестве

TigerStream 6: Silt Fence Geotextile Research

Welcome to another TigerStream Webinar. This month we are joined by Dr. Blake Whitman with University of Tennessee. Completion of this webinar earns you one PDH. After completing the video, visit aub.ie/tigerstreampdh to receive your certificate. ABSTRACT: Silt fence have been used as a means for intercepting and treating construction site stormwater runoff prior to offsite discharge for well over 30 years. Standard small-scale testing methodologies for evaluating the filtering component of silt fence installations have failed to mimic realistic flows and sediment loadings commonly seen in field applications. To address these issues, this study evaluated the performance capabilities of two nonwoven and three woven silt fence geotextiles using an innovative testing methodology and a newly developed small-scale testing apparatus. The overall intent for conducting the evaluations was to develop a deeper understanding of effluent flow rates, sediment retention capabilities, and water quality impacts associated with geotextile fabrics. Results suggest that effluent flow rates of nonwoven geotextiles are on average 43% lower than woven materials, which results in extensive upstream retention times of impounded stormwater for nonwoven materials. Sediment retention results indicate that nonwoven geotextiles have an average sediment retention rate of 97% while woven geotextiles average 91%. Finally, water quality analyses suggest that the primary means for turbidity reductions rely on the process of sedimentation during the 30-min test period (i.e., 46% reduction) and filtration during the 90-min dewatering period (i.e., 19% reduction). Bio: Blake is an Assistant Professor at the University of Tennessee – Knoxville, where he teaches in the Construction Science and Management program. He has extensive experience teaching principles of construction management, construction safety, and stormwater management. His research centers on improving stormwater best management practices, addressing both construction and post-construction stormwater challenges. His work aims to bridge the gap between applied research and real-world implementation, driving innovations that enhance industry practices.