For construction of parking uncovered of Taguatinga Shopping, at Distrito Federal, the project included the utilization of interlocked floor (Bloquete) over the concrete slab type “Steel Deck”, waterproofed with asphalt mantle. It has been used a layer of drainage geocomposite for improvement of mechanical protection of the waterproofed mantle, but too as sliding layer and with main function, to drain the excess of water and liquids percolated through the cover structure made by blocks.
The project was composed by multidisciplinary concepts which brings together architectural aspects of the flooring coatings, chosen by architecture, looking the improvement of thermal and acoustic comfort of stores under the region with vehicle traffic; and structural, with control cracks, apart from geotechnical, in drainage of water in the layer of powder stone of settlement of blocks, over the slabs, avoiding thin pumping and effect of reduction of interaction between blocks caused by rising forces of water. For many years the shopping was the biggest, outside the Plano Piloto (Brasilia downtown region), in 2010 it increased its service area and too parking lots. The original proposal utilized in 3000m2 was replicated at extension, in an area of approximately 2000 m2.
After studies some alternatives which heeding the needs mentioned before, opted by utilization of the system composed by geocomposite drainage, with rigid drainage core. This system is composed by a drainage core formed by a extruded geogrid composed by polyethylene of high density and welded thermally to two non-woven geotextiles of polyester in all contact points. This drainage geocomposite was applied directly over the waterproofed slab, reducing the system drainage session for 7 mm meeting the needs of layers of mechanical protection and sliding separating, proposing an compact system, efficient, of low cost, efficient, and with production improvement.
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