Concrete placement continued through the night beneath the future St. Regis Residences as six boom pumps distributed material across the 8,400-cu.-yd. mat foundation. Crews prepare reinforcing steel and embedded utilities before the continuous mat foundation placement at Coastal Construction's Shorecrest condominium project in West Palm Beach, Fla. continuous mat foundation placement. mat foundation placement at the Shorecrest condominium project in West Palm Beach.