Adoption of SS 525 addresses drainage issues from wind-driven rain (WDR)
Wind-driven rain (WDR) is a significant issue in Singapore due to its tropical climate, flat landscape, and dense
urban environment. The city experiences heavy rainfall throughout the year, particularly during the monsoon
seasons, when strong winds drive rain into buildings. Singapore's relatively flat terrain allows winds to move
freely, especially in coastal areas, while the high density of tall buildings creates wind tunnels that amplify the
effects of WDR. Facades facing the prevailing monsoon winds are especially vulnerable, and upper floors of
skyscrapers are more exposed to WDR due to higher wind speeds at greater altitudes. ...