Sumit Singhal Sumit Singhal loves modern architecture. He comes from a family of builders who have built more than 20 projects in the last ten years near Delhi in India. He has recently started writing about the architectural projects that catch his imagination.
Synergy, Csiro in Australia by BVN
December 7th, 2018 by Sumit Singhal
Article source: BVN
BVN’s engagement extended to the entirety of the project across two phases, including new building, four building re-fits and various demolitions to consolidate CSIRO’s staff from leased sites within Canberra to the Black Mountain site which is owned by CSIRO. It is provided in two Phases.
The first involves construction of a new approximately 15,000m2 comprising office accommodation, science capability (purpose built specialist laboratory and research building, PC2 laboratories), associated infrastructure, on grade car parking, and landscaping; Refitting the Discovery Centre and road network realignment as nominated in Master Plan including a new access road to the new building and the existing road upgrades to the car park.
The second phases included Refit of Pye, Library, and construction of associated infrastructure, Piazza and landscaping.
In addition to these works the project also requires detailed decanting of existing facilities into temporary or in some instances permanent accommodation to enable the development of Phases 01 + 02.
The ventilation system for the open plan workplace comprises high level automatic opening windows in the façade and high level exhaust through the central circulation atrium.
Natural ventilation operates through two key driving pressures, wind pressure and stack pressure.
Wind pressure creates driving force through the creation of positive and negative pressure zones on opposing sides.
In the case of this building, the negative pressure zones are created on the leeward side of the building, and to a greater extent, because of higher wind speeds on the leeward side of the atrium.
Stack pressure creates driving force through temperature differentials due to air temperature and density changing with height.
In order to maintain good driving forces, large opening areas are required. This lead to a chimney design which allowed for fixed clear glazing at the top of the circulation atrium which will produce ample natural daylight into the void and create unobstructed views out to the sky.
The permanently open louvres at the chimney top will not require access or maintenance.
The chimney will be clad with black alucobond in order to absorb radiant heat from the sun.
This elevates the temperature in the chimney further increasing the driving force due to stack pressure.
In order to control the air flow through the chimney from the occupied space, actuated louvres are provided at the bottom of the stack, where it intersects with the atrium. These louvres will be controlled with the operable windows in the façade.
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