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Stormwater Quality Design Manual (May 2007) - City of Sacramento ...

Stormwater Quality Design Manual (May 2007) - City of Sacramento ...

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Run<strong>of</strong>f Reduction Control Measure Fact SheetGreen Ro<strong>of</strong>Table GR-3. <strong>Design</strong> Data Summary Sheet for Green Ro<strong>of</strong><strong>Design</strong>er:Company:Project:Location:Date:1. Determine <strong>Design</strong> Water <strong>Quality</strong> Volume: WQV = ft 32. Determine growth medium volume based onporosity <strong>of</strong> growth media with vegetation.Volume <strong>of</strong> growth medium = WQV/Porosity. V = ft 33. Select green ro<strong>of</strong> type Extensive Intensive4. Determine Required Structural Support5. Check that system includes all component layers Waterpro<strong>of</strong>ing Membrane Insulation/Air Barrier (optional) Drainage/Water Storage/Aeration Layers Engineered Growth Media Protection Layer/Root Barrier Water Retention Mat Geotextile Filter Fabric Gravel Ballast (if needed)6. Select Vegetation and describe 80% Sedum 20% Native species7. Determine Irrigation Needs8. Incorporate Vegetation-Free Zones or Fire BreaksNotes:<strong>Stormwater</strong> <strong>Quality</strong> <strong>Design</strong> <strong>Manual</strong> for the <strong>Sacramento</strong> and South Placer Regions<strong>May</strong> <strong>2007</strong>GR-11

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