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RFI - Stormwater Management Plan
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BALANCE 6/1 CATCHMENT AREA = 0.167Ha 35% - IMPERVIOUS PAVEMENT (C10 = 0.9) 65% - PERVIOUS DENSE-MEDIUM BUSHLAND WITH HIGH SOIL PERMEABILITY (C10 = 0.25) IMPERVIOUS PORTION CALC q10 = 226mm/hr*(0.167*0.35)*(1.0*0.9)*(1/360) = 0.033m3/s q100 = 332mm/hr*(0.167*0.35)*(1.2*0.9)*(1/360) = 0.054m3/s PERVIOUS PORTION CALC q10 = 226mm/hr*(0.167*0.65)*(1.0*0.25)*(1/360) = 0.017m3/s q100 = 332mm/hr*(0.167*0.65)*(1.2*0.25)*(1/360) = 0.030m3/s TOTAL CALC q10 = 0.05m3/s q100 = 0.084m3/s SERENITY CLOSE EX/10 CATCHMENT AREA = 0.1495Ha 90% - IMPERVIOUS PAVEMENT (C/10 = 0.88) q10 = 226mm/hr*0.1495*(1.0*0.88)*(1/360) = 0.082m3/s q100 = 332mm/hr*0.1495*(1.2*0.88 ADOPT 1)*(1/360) = 0.138m3/s SERENITY CLOSE 8/1 CATCHMENT AREA = 0.1304Ha 90% - IMPERVIOUS PAVEMENT (C/10 = 0.88) Q10 = 226mm/hr*0.1304*(1.0*0.88)*(1/360) = 0.072m3/s Q100 = 332mm/hr*0.1304*(1.2*0.88 ADOPT 1)*(1/360) = 0.12m3/s
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