Prefabricated drainage system is easy to install and lowers excavation costs. EA Sports wanted to build an on-site artificial turf playing field for their employees on the top of a four-level parkade. Challenge Due to limited space, poor site accessibility, and load restrictions, conventional drainage mediums like gravel could not be used. The chosen drainage medium would also have to adapt to local rainfall intensities, 4,087.6 m 2 of

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