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    Wolfin IB membrane the solution to major lift pit problem

    Projex Group

    As part of its ongoing commitment to maintaining and improving the Domestic Terminal Precinct, the Brisbane Airport Corporation is currently undertaking upgrade works at the Common User Satellite. Builders faced a major problem when it came to the construction of the lift pit however, because the base of the pit would be 300mm below the high tide mark.

    A solution to this problem was found however in Wolfin IB membranes and Projex Shockmat, available from Projex Group.

    To overcome the problem the lift pit was formed and poured at a casting area within the airport grounds. When the concrete had cured sufficiently to lift, the unit was placed on a preformed sheet of Wolfin IB membrane that had been covered with 5mm Projex Shockmat to avoid damage to the membrane when the pit was placed onto it.

    When the pit was in place on the Wolfin IB membrane, the outer face of the walls were lined with Wolfin GWSK and the two Wolfin materials were married together. The “bagged” pre-cast lift pit was then placed onto a heavy duty trailer and hoisted into place at low tide.
    The Wolfin IB membrane was chosen because of it's proven ability to withstand oil-based chemicals of the type found around airports and its ability to withstand regular immersion and dry cycles.

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