The Application of SUDS to a High Density Urban Environment using Singapore as a Case Study Simon Chu and Martin Mansell School of Engineering and Science University of Paisley

Singapore

Typical Large Flood Channel

Typical Reservoir

Water Consumption

Possible SUDS Applications  Rainwater Storage/Re-use  Permeable Pavements  Swales?  Ponds/Basins ?

Typical Residential Neighbourhood

Area Around Housing Block driveway and car parking High Rise Housing Block pavement grass road

Rainwater Tank Model overflow rainwater consumption

Rainwater Tank Reliability Reliability (%) Consumption Litres/Person /day Tank Vol = 10 m 3 Tank Vol = 30 m 3 Tank Vol = 45 m

Reservoir Model Runoff (O) Infiltration (I) Rainfall (R) Storage (S) Depth (D)

Output from Model

Green Roofs

Conclusions Grey-water high internal cost low treatment cost Potable water low internal cost high treatment cost Permeable Paving areas of specific flood risk would be cost effective for new build Surface Storage health risks