Resilience measure: Green wall


A green wall is a wall partially or completely covered with vegetation that includes a growing medium, such as soil. Most green walls also feature an integrated water delivery system. Green walls are also known as living walls or vertical gardens. The wall helps reduce run-off by capturing rainwater from the roof of the building in dedicated storage tanks.
(Wikipedia, Green wall, accessed on Sept. 2016).

Co-benefits and impacts

The stored water can be utilised for plant nourishment. It is also expected to improve air quality in the area by trapping toxic particulates emitted in exhaust fumes, as well as dampening noise, boosting the numbers of birds and bees and helping to keep the building cooler in the summer and warmer in winter.
(GreenBiz, Can London's largest living wall prevent city flooding?, accessed on Sept. 2016)
The increase of infiltration capacity is minimal because the low capacity of the soils to store water (thin soil layers). However, the largest effect is related with the increase of the water harvesting potential. In not-vertical walls, they also may reduce the velocity of stormwaters and the pollutant discharges.

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Last modified: Sept. 21, 2016, 9:58 a.m.