rain collector skyscraper
mar 11, 2010
rain collector skyscraper


‘capture the rain’ skyscraper by ryszard rychlicki and agnieszka nowak

polish architectural students ryszard rychlicki and agnieszka nowak of H3AR received
a special mention for their proposal in the 2010 skyscraper competition.

‘capture the rain’ skyscraper is a building whose roof and external shell, which consists
systems of gutters, are aimed at capturing as much rainfall as possible to meet the daily
needs of its inhabitants. average daily consumption of water per person is 150 liters,
out of which 85 liters may be replaced by rain water. within the last thirty years water
consumption has significantly increased. there are lots of factors that contribute to such
an increase such as increasing number washing machines and dish washers, increasing
popularity of garden showering devices and flushing toilets. a third of water being used
in households in western countries is flushed in toilets. since 1900 the total water
consumption in the US has increased by 1000%. at present, an average american uses
five times more water that a citizen of developing countries. such an increase is related
to among others improved living standards. on the other hand, a national hobby of
the danes is collecting rain water for washing and watering plants. within the last ten years
average use of pure water in denmark dropped by 40% and inhabitants of the so called
eco-villages use a third part of the national average.

in view of this data, they decided to design a tower, whose structure will allow for capturing
and processing as much rainfall as possible to provide with water for its inhabitants.
millennia plants have been developing systems of capturing and processing rainfall.
such systems helped them to deal with water deficits or surpluses. similarly, they wanted
to copy their simple mechanisms of rainfall capturing and processing. initially, in designing
the tower, we focused at shaping and modeling the surface of the roof to capture as much
rainfall as possible. under a roof’s surface, there are water reservoirs in the form of a large
funnel and reed fields, which serve as a hydro botanic water treatment unit. the unit processes
water into usable water that is further transmitted to apartments. a network of gutters on
the external surfaces of the building is designed to capture rainfall flowing down the building.
such flowing rainfall is transmitted to floors and its surplus is stored in a reservoir under
the building. water captured and processed by the building may be used for flushing toilets,
feeding washing machines, watering plants, cleaning floors and other domestic applications.
having analyzed rainfall in several large cities in developed countries, we obtained a formula
that shows what percentage of daily pure water consumption may be replaced with rainfall
thanks to the technology applied in their building.


top section of ‘capture the rain’


detail of balcony


how the rain contributes to the rest of the building


the funnel which is at the core of the building


water consumption table

the water is reused and circulated around the building

project info:
rain collector and skyscraper
design- ryszard rychlicki, agnieszka nowak ( www.h3ar.pl)
4th year students of architecture academy of fine arts in poznan poland
special mention-2010 skyscraper competition evolo

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