Marina Bay Sands Casino, Singapore, is punctuated by three, 50 storey hotel towers. The tri-structures are crowned by a 2 acre modern park enclosing a spectacular 150 metre long infinity edge swimming pool. Constructed by Venturer Private, the precinct is called, Sands Skypark, containing a bar, restaurant, spa, garden and observation deck. It can take a person twenty minutes to walk around its entire ellipse, offering 360° views of the city and the sea. For such a large outdoor botanical precinct, designers required the surface water drainage to be functional and discreet. Peridian Landscape invited ACO Polycrete Pty Ltd, renowned suppliers of innovative drainage solutions, to provide input into the overall drainage design. The drainage solution had to cater for a rainfall intensity of 330mm/hr and due to the physical constraints, could not protrude beyond a depth of 266mm. After some consultation and careful analysis by ACO's engineers, a solution was provided, complete with run schedules and hydraulic profiles.