Water Sustainability in Cities Unit 6: Rainwater Harvesting RWH Sizing Exercise Overview
Cistern Sizing Exercise
Available Roof Area 190 ft 54 ft 135 ft 100 ft 72 ft 40 ft How much rainwater can be collected and used from the 28,288 ft2 CME roof?
Monthly Water Supply See Spreadsheet
Monthly Demand See Spreadsheet
Monthly Water Balance See Spreadsheet
Discussion Work with a partner and make a list of reasons (a) why and (b) why not rainwater harvesting is more sustainable than piped-in water supply. Why Why Not Reason 1 Reason 2 … Reason 1 Reason 2 … Write on board