A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Using Green Roofs and Other BMPs to Reduce the Need for Stormwater Retention Capacity Requirements
Many factors are at play in the choice of stormwater BMPs as part of a stormwater management plan. Factors such as costs for land area and construction and the effectiveness of BMPs are important variables to consider when implementing low impact development strategies. A study was conducted to briefly compare stormwater BMP costs and benefits while focusing primarily on the effectiveness of green roofs to mediate stormwater using computer simulation and field study. Simulations were run using HYDRUS-1D for 24-hour design storms to determine peak flow, retention and detention time for runoff. Storm data collected at an Athens, GA green roof study were used to validate HYDRUS-simulated runoff. The study site was atop a utility room for University of Georgia Science Library and consisted of a 37 m2 (400 ft2) modular block green roof containing engineered soil and several Sedum species. The study revealed that rainfall depth per storm strongly influences the performance of green roofs for stormwater mitigation, providing complete retention of small storms (< 2.54 cm) and detention for larger storms.
Using Green Roofs and Other BMPs to Reduce the Need for Stormwater Retention Capacity Requirements
Many factors are at play in the choice of stormwater BMPs as part of a stormwater management plan. Factors such as costs for land area and construction and the effectiveness of BMPs are important variables to consider when implementing low impact development strategies. A study was conducted to briefly compare stormwater BMP costs and benefits while focusing primarily on the effectiveness of green roofs to mediate stormwater using computer simulation and field study. Simulations were run using HYDRUS-1D for 24-hour design storms to determine peak flow, retention and detention time for runoff. Storm data collected at an Athens, GA green roof study were used to validate HYDRUS-simulated runoff. The study site was atop a utility room for University of Georgia Science Library and consisted of a 37 m2 (400 ft2) modular block green roof containing engineered soil and several Sedum species. The study revealed that rainfall depth per storm strongly influences the performance of green roofs for stormwater mitigation, providing complete retention of small storms (< 2.54 cm) and detention for larger storms.
Using Green Roofs and Other BMPs to Reduce the Need for Stormwater Retention Capacity Requirements
Hilten, Roger Norris (author) / Lawrence, Thomas Mark (author)
Second National Low Impact Development Conference ; 2007 ; Wilmington, North Carolina, United States
Low Impact Development ; 226-239
2008-11-07
Conference paper
Electronic Resource
English
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