4D Structures contacted GJN to offer their expertise in coming up with solutions to problems. GJN drilled 152mm diameter holes 1200mm through a heavy reinforced concrete floor to produce filling points for the concrete mix. We also drilled 100mm diameter holes through 550mm thick RC walls. Since the completion of this work, GJN have returned to site to complete numerous core holes for Kimpton Energy Solutions. Drilling 52mm and 152mm holes for services.
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