cee5734_week14_2011

cee5734_week14_2011 - CEE 5734 Urban Hydrology and...

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Glenn E. Moglen Department of Civil & Environmental Engineering Virginia Tech Water Quality: LID Modeling CEE 5734 – Urban Hydrology and Stormwater Management Week 14
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Questions LID Modeling in SWMM LID Concepts LID Types LID Process Layers Example Application – Bio-Retention Cell LID Mechanics/Controls Course Review – Final Exam Preparation Advice Course survey Final Comments Today’s Agenda
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Philosophy: LID designs seek greater harmony with nature and seek to promote processes that would happen naturally. Emphasis is on planning the management of water generated on site. Scale: site (individual property) scale – much smaller than conventional stormwater management. Objectives: promote infiltration, evaporation, on-site storage, and nutrient utilization of stormwater. LID Concepts:
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Also known as “rain gardens” Promotes infiltration, evaporation, and biological uptake LID Types: Bio-Retention Cells For more, see: http://www.ence.umd.edu/~apdavis/Bioret.htm
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Trenches that have been backfilled with stone. They collect runoff during a storm and release it to the surrounding soil via infiltration after the storm. LID Types: Infiltration Trenches For more, see: http://www.lowimpactdevelopment.org/ffxcty/3 -1_infltrationtrench_draft.pdf
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Porous pavement comes in two basic forms: Upper picture: pavement missing fines (provides pores) Lower Picture: “Pavers” LID Types: Porous Pavement For more, see: http://www.crd.bc.ca/watersheds/lid/permeable. htm
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This note was uploaded on 12/24/2011 for the course CEE 5734 taught by Professor Moglen during the Spring '11 term at Virginia Tech.

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cee5734_week14_2011 - CEE 5734 Urban Hydrology and...

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