Architect and Builder January 2021 | Page 42

engineers had to focus on limiting water ingress through the retaining walls . This was achieved by having a wet cavity coupled with an extensive subsoil drainage system around the perimeter of the building and below the surface bed , which drains to a central sub-soil lifting station . This meant that the client could have a dry the basement all year round .
A restricted site with an active road in close proximity , which had to remain operational , meant that the need for lateral support along certain edges of the basement was necessary . This was achieved by installing closely spaced soldier piles during the excavation of the basement . This lateral support system was then cleverly integrated into the main structure to support several of the buildings columns permanently . Numerous transfer structures were required on the lower levels to reconcile the office building layout with the elegant curved façade and the parking layouts in the basement .
HVAC The building ’ s air-conditioning is provided by means of 2 air-cooled chillers providing cold water to individual fan coil units situated on the floors via a chilled water-piping network . Primary and secondary chilled water pumps ensure that the chilled water flow can be varied . Tempered , filtered outside air is provided to the office floors via 2 heat recovery wheels whereby the outside air load on the building is reduced . Energy meters have been
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