A monolithic concrete slab follows the topography of the site with a slope of approximately 4 per cent over a length of 127.40 metres. This and the curved cross-section of the deck ensure a quick run-off of rainwater to peripheral gutters, from where it is used to water 40 planting boxes along the sides. Above these boxes are tall trellis frames that accentuate the column grid and define the upper parking deck space. The elongated overall form is stressed by the horizontal strips of the boarded formwork finish to the concrete.