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Tutorial 2 Optimizing Rain Barrels for Sustain 4.0

Tutorial 2 Optimizing Rain Barrels for Sustain 4.0

This example shows the importance of a treatment train, the percent imperious draining to the LID’s on a Subcatchment, the importance of optimizing for the number of units, area and soil thickness. Sustain will optimize the number of Rain Barrels on the ten Subcatchments.

1. Turn off Width and Thickness on the LID Candidates Grid

2. Allow the number of Units to increase

3. Do NOT send the drainage of the Rain Barrels to the pervious area – no treatment train

4. Allow most of the Rooftop drainage to flow into the Rain Barrels

A Data Copy of the Grid

ID LID Type Subcatch. ID LID Control Replicate Coverage Type Unit Area Coverage Top Width Init. Saturattion % of Imperv. Area Treated Send Flow to Perv. Area Print Report Apply Unit Count Unit Step Min Unit Max Unit Apply Width Width Step Min Width Max Width Apply Soil Thickness Thickness Step Min Thickness Max Thickness Apply LID Area Area Step Min Area Max Area Linear Cost Area Cost Total Volume Cost Soil Media Volume Cost Under Drain Volume Cost Constant Cost Percentage of other Cost Width Exponent Area Exponent Total Volume Exponent Media Volume Exponent Under Drain Volume Exponent Underdrain Outlet Installation Plan

1 4: Rain Barrel 1 RB 1 12.000 3.000 25.000 Yes No Yes 1 0 100 10.000 10.000 5000.000 Yes 1.000 1.000 25.000 No 1.000 1.000 28639.805 0.000 0.000 17.350 0.000 0.000 50.000 0.000 1.000 1.000 1.000 1.000 1.000 DEFAULT

2 4: Rain Barrel 2 RB 1 12.000 3.000 25.000 Yes No Yes 1 0 100 No 5.000 10.000 5000.000 Yes 1.000 1.000 25.000 No 1.000 1.000 28639.805 0.000 0.000 17.350 0.000 0.000 50.000 0.000 1.000 1.000 1.000 1.000 1.000 DEFAULT

3 4: Rain Barrel 3 RB 1 12.000 3.000 25.000 Yes No Yes 1 0 100 No 5.000 10.000 5000.000 Yes 1.000 1.000 25.000 No 1.000 1.000 28639.805 0.000 0.000 17.350 0.000 0.000 50.000 0.000 1.000 1.000 1.000 1.000 1.000 DEFAULT

4 4: Rain Barrel 4 RB 1 12.000 3.000 25.000 Yes No Yes 1 0 100 No 5.000 10.000 5000.000 Yes 1.000 1.000 25.000 No 1.000 1.000 28639.805 0.000 0.000 17.350 0.000 0.000 50.000 0.000 1.000 1.000 1.000 1.000 1.000 DEFAULT

5 4: Rain Barrel 5 RB 1 12.000 3.000 25.000 Yes No Yes 1 0 100 No 5.000 10.000 5000.000 Yes 1.000 1.000 25.000 No 1.000 1.000 28639.805 0.000 0.000 17.350 0.000 0.000 50.000 0.000 1.000 1.000 1.000 1.000 1.000 DEFAULT

6 4: Rain Barrel 6 RB 1 12.000 3.000 25.000 Yes No No 1 0 100 No 5.000 No No DEFAULT

7 4: Rain Barrel 7 RB 1 12.000 3.000 25.000 Yes No No 1 0 100 No 5.000 No No DEFAULT

8 4: Rain Barrel 8 RB 1 12.000 3.000 25.000 Yes No No 1 0 100 No 5.000 No No DEFAULT

Our Optimization Goals

Use NSGA-II Optimization to find the Cost Boundary Curve

The Cost Effectiveness Curves for Runoff and Water Quality

The Cost Effectiveness Report for Runoff and Water Quality

There is little removal as the Rain Barrels are not sending the overflow to the pervious area and there is little storage in a Rain Barrel.

Use Scatter Search to Find the Best Solutions

The Design Report and Performance Curve

The lack of a treatment train reduces the impact of the Rain Barrels

Add a Treatment Train by allowing the Rain Barrels to flow onto the Pervious Area of the Subcatchments

The Design Report and Performance Curve

The treatment train improves the impact of the Rain Barrels

The Effect of the Treatment Train in InfoSWMM

If you export the optimized LID’s to InfoSWMM (LID Usage DB Table) then you can see the effect of sending the flow to the pervious area from the Rain Barrels. The Red Dot Scenario is the Rain Barrels NOT flowing to pervious area but the outlet of the Subcatchment. The Green line is the Rain Barrel flowing to the pervious area. See also Tutorial 10.

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