The robots did the heavy work, but a 25-member crew from Raffin Construction Co. followed behind to get the concrete slab at the H-F Ice Arena in perfect condition.
The park district is using a new system recommended by American Arena. It layers a heating system covered by sand, then the cooling system is laid on top and covered by sand. That is topped with Styrofoam insulation. Rebar was screwed into the Styrofoam to make certain the cooling pipes didn’t shift when the concrete layer was poured.
The process of filling the H . . .