STORMWATER COLLECTION ROOFTOP COLLECTION AND STORAGE A study of the percentage of rooftop cover of the existing landuses, allowed us to calculate the potential volumes of water that could be captured per year using average rainfall numbers. An indexical drawing was used to find the path of water from the rooftops to the nearest adjacent vacant lot and calculate the volume of water each catchment would provide. Although it is unrealistic to capture all the rainwater it provided us with a guide to understand the potentials of using rainwater for greenhouse production. Our calculations estimate that the annual rainfall could produce enough volume to supply 320 greenhouses with their annual water demands.
The vacant lots which provide the highest potential for stormwater capture have been highlighted and will become part of our greeninfrastructure spine. The existing canals on site while only serving a purpose of directing water to the river could be tied to this spine and create a water storage network with the potential for much higher volumes of storage. The existing valley will become the overflow capture for this system and provide additional storage while also serving as habitat for a variety of species. It will also serve the purpose of slowing down runoff before reaching the river.
5923 cu.m
47241 cu PERCENT ROOF COVER
TOTAL ROOF AREA
VILLAGE
67%
6.417.229 sq.m
COMMERCIAL
337.214 sq.m
FACILITY
889.693 sq.m
HIGH RISE
1.622.127 sq.m
INDUSTRY
1.199.064 sq.m
EDUCATIONAL
484.155 sq.m
55% 47%
37% 35% 33%
16316 cu.m
9373 cu.
TOTAL AREA = 10.465.327 sq.m RAINFALL = 0,50 m/year COEFICIENT LOSS = 0,62
TOTAL = 3.374.021 cu.m
1
4,400 sq.m GREENHOUSE
10,532 cu.m/ year
320
GREENHOUSES
56
WEAVE RETHINKING THE URBAN SURFACE
wine process