Week 5：Bowl-shaped roof

For countries with a dry climate, water scarcity is always an intractable problem. The Iranian company BMDesign Studios has designed a double-roof system called Concave Roof, which can be used to collect rainwater in a bowl-shaped container on a building roof in a hot and dry climate. For a dry environment, precipitation is one-third of the world's average, and the rate of water evaporation is three times the global average. The design system solves the problem of water shortage, which not only provides natural cooling in the house but also compensates for the shortcomings of building water consumption.



The Concave Roof consists of two roofs and there has another dome-shaped convex roof below the roof of the bowl-shaped catchment. Any small amount of precipitation can be collected through this design and combined into larger droplets. Water droplets are collected before the water evaporates, and this combination of a concave roof and a convex roof also provides a natural cooling effect. The concave roof system can collect up to 28 cubic meters of rainwater for the school, helping the school's daily operation.



Singapore is an island country with a shortage of freshwater resources, which was all piped by Malaysia in the past. However, the government decided that they should not rely too much on external water supplies because there was a risk of water being cut off in the event of an accident.




 The ArtScience Museum is located in Marina Bay, Singapore, designed by architect Moser Safdie. It is the most environmentally friendly building in the Singapore Development Zone. It looks like a blooming lotus flower or an open hand. This shape is good for collecting rainwater and light for daily use in museums. After filtering, rainwater It can also meet the water needs of various facilities in the lounge.


Rainwater is a cleaner water resource and pollution is not serious. After filtering, the rainwater can also meet the water needs of the various facilities in the lounge. The bowl-shaped roof of these buildings shows how to scientifically collect and utilize water sources, which has become an indispensable element of many sustainable buildings.


References: 

Archdaily.https://www.archdaily.com/802377/this-concave-roof-system-collects-rainwater-in-arid-climates

Robaid. http://www.robaid.com/architecture/green-architecture-artscience-museum-in-singapore.htm

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