Transcription of Chapter 2 – Dry Extended Detention Basin
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VDOT BMP Design Manual of Practice i Chapter 2 Dry Extended Detention Basin Chapter 2 Dry Extended Detention Basin TABLE OF CONTENTS Overview of Practice .. 1 Site Constraints and Siting of the Facility .. 2 Minimum Drainage Area .. 2 Maximum Drainage Area .. 5 Separation Distances .. 5 Site Slopes .. 5 Site Soils .. 6 Rock .. 6 Existing Utilities .. 6 Karst .. 6 Wetlands .. 6 Upstream Sediment Considerations .. 7 Floodplains .. 7 Basin Location .. 7 General Design Guidelines .. 8 Foundation and Embankment Material .. 8 Outfall Piping .. 8 Embankment .. 8 Embankment 9 Prevention of Short-Circuiting .. 9 Ponded Depth .. 9 Principal Spillway Design.
Table of Contents VDOT BMP Design Manual of Practice ii Chapter 2 – Dry Extended Detention Basin Step 4. Development of Storage Versus Elevation Data ..... 19
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