the larger precinct . The structural steel feature bridge that connects the two Rewardsco buildings relies on a push / pull effect on the podium slab and the existing building as support . The steel bridge traverses a movement joint on the podium which posed some detail design challenges .
Mechanical Overview Basement The basement parking serving the entire office park is naturally ventilated . A new section of basement for Block B was constructed which restricted good ventilation , so ‘ Shunt-Fans ’ were installed to improve the situation . They are also used for smoke clearance in the event of a basement fire .
Scissor-Stair Pressurisation This type of stair requires totally independent pressurisation systems . As the building is under 30m in height , the simplest and most cost effective
way is to pressurise each ‘ interwoven ’ staircase from a single entry point . For block B this was achieved by blowing air into the first basement landings of the two fire stairs .
Building Air Conditioning All buildings in the office park are served by a centralised chilled water plant located on the lowest basement level . Water for the cooling towers comes from a treatment plant taking water from the attenuation pond and condensate harvesting from all the buildings in the Park .
Block B is served by multiple fan coil units mounted in the ceiling void . This maximises the available tenant space and provides excellent zonal control . Modulating , as opposed to simple open and closed , chilled water valves were used to significantly improve temperature control and further minimise complaints especially on the call-centre floors .
SECTIONAL RENDER
BASEMENT P1 PLAN
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