To provide waterproofing membrane protection and efficient sub-soil drainage under the landscaped roof areas on the 20ha site of the campus.
VersiCell lightweight interlocking modules, positioned over the waterproofing membrane, offers immediate protection for the membrane whilst other installation works were carried out. High compressive strength of the modules made it possible for light machinery to be placed on top without compromising the membrane below. A geotextile filter fabric is installed over the VersiCell and planting soil placed on top. The drainage cells provide the necessary cavity beneath the planted areas to efficiently discharge excess sub-soil water and prevent water-logging on the landscape roof. The resultant lush greenery on the campus grounds has earned the Polytechnic the nickname of “Campus in the Park”.