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RFI - C - Site Based Stormwater Management Plan
Plans and drawings
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Log in to see the plans as drawnBuilding Occupancy Calculations
Building Spaces
•253m2 of Individual dwellings - BCA Class 1a with an average occupancy of 5.1 people
Estimated Total Building Occupancy 5.1
Stormwater VOLUME Calculations
Site Area (m2) 582
Post development total impervious
area (m2) 376.0
Rainwater Tank Overflow (kL/annum) 0.0
Pre-development Volume (kL/annum) 183.5
Post-development Volume
19.1
(kL/annum)
Change in volume % -89.6
Stormwater QUALITY Calculations
Rainwater Tank Runoff reduction (%) 0.0
Rainwater Tank(s) Total Nitrogen (TN) 0.0
reduction
Total Nitrogen (TN) % reduction 93.6
Equivalent STORM Score 208
Water EFFICIENCY Calculations
Benchmark water use (kL/year) 444.9
Predicted potable water use (kL/year) 396.0
Predicted potable water use
212.7
(L/person/day)
Water savings from tank (kL/year) 0.0
Water saving from efficiency (kL/year) 48.90
Water
Total water saving % (efficiency + tank 11.0 saving 48.9
+ recycled water) (kL/year)
© 2020 InSite Water www.insitewater.com.au
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