COVER STORY
HDB project demonstrates safety in design and construction SkyTerrace @ Dawson won a DESIGN AND ENGINEERING SAFETY EXCELLENCE AWARD, in the RESIDENTIAL CATEGORY, at BCA AWARDS 2016.
SkyTerrace @ Dawson comprises five 40- to 43-storey high residential blocks. Image by Housing & Development Board.
INTRODUCTION Located adjacent to the Alexandra Canal Linear Park,SkyTerrace @ Dawson comprises five 40- to 43-storey high residential blocks. The Housing & Development Board (HDB) project was completed in early 2015. The five blocks, which house 758 units, are linked to a four-storey carpark podium and six sky bridges, two of them linking Blocks 92 and 93 (at the 33rd storey and the 18th storey levels), two linking Blocks 89 and 90 (at the 34th storey and 19th storey levels) and two linking Blocks 90 and 91 (at the 28th storey and 13th storey levels). There are two levels at each sky bridge. The top level is a sky garden
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accessible to the public, whereas the bottom level is a maintenance deck accessible only to maintenance personnel. The two sides and bottom of the steel structure are clad with galvanised steel mesh. The bridge structure comprises 3D trusses on the sides, RC slabs on the top level and a steel platform at the bottom level. There were several challenges that the project team had to overcome for the successful completion of the project. These include the following:• Designing of the structural framing of the tower blocks, due to the different layout for every floor, loft and split level - the tower blocks are made up of four dwelling units
THE SINGAPORE ENGINEER December 2016
Loft / double volume space