Products
Kaneohe Stream bank restoration
Overview
As part of Hawaii’s National Pollutant Discharge Elimination System (NPDES) and Erosion Prone Area Improvements Program, a streambank stabilization project was completed along Kaneohe Stream in Kaneohe, Oahu.
Over the past 30 years, high-flow events eroded higher portions of the channel, causing encroachment of several private properties. To prevent additional property loss and mitigate future flooding, the City and County of Honolulu wanted to find a solution that would provide long-term channel stabilization. Historically, a concrete solution has been used, but the City and County wanted a more natural system that encouraged the growth of native vegetation.
Solution
PROPEX Pyrawall engineered wrap-faced vegetated solution, was selected to reinforce 330 feet of Kaneohe Stream. The installation ranged from six to eight feet high and was designed based on geotechnical information available at the site. This included steep 1H:4V slope segments with a midslope planting bench.
PROPEX Pyrawall combines High Performance Turf Reinforcement Mat (HPTRM) with internal braces to reinforce soil mass and resist lateral earth pressures. It is also designed to encourage vegetation and is a vegetated Best Management Practice Solution for NPDES Storm Water Compliance. This wall system is comprised entirely of three engineered geosynthetic components with no metal, concrete or short-lived biodegradable materials.
The vegetated wrap-face wall system provided a resilient bank reconstruction and stabilization along a residential section of the Kaneohe Stream that will provided a flood mitigation for up to 75 years
This is a test
This is a second test
Explore more case studies
View allMeeting subgrade stabilization challenges with MIRAFI
Utilizing MIRAFI RS380i geotextile fabric, this project overcame poor subgrade conditions to construct four commercial buildings with stable platforms for parking lots and loading docks.
IMAX parking lot's innovative stormwater system with MIRAFI
In 2012, Mississauga's IMAX parking lot implemented a low impact development system to manage stormwater, enhancing water quality and maintaining pavement integrity.
Increasing roadway design life with MIRAFI
116th Ave in Grande Prairie was reconstructed using MIRAFI H2Ri, overcoming failures from heavy traffic and challenging soil, improving road longevity and performance.