The 100,000-square foot Resorts Casino in Atlantic City features action 24-hours-a-day. Originally constructed in the 1920s, a new hotel tower was constructed a few years ago. The final phase of the project was to connect the original hotel tower, lobby, check-in area and casino with the new lobby by creating a new promenade between them. However, because of differences in the slab elevations of the floors in the two towers, the new promenade needed to be inclined to compensate for the difference. Structural Preservation Systems (SPS) removed an existing intermediate slab at the old tower in order for the new concourse to pass through from the lower elevation at the old tower to the higher one at the new tower. The change of the structural condition resulted in columns that span two floors high.

Another challenge was the new walkway, designed to be held up by a series of supports resting on the original base slab below. The base slab was thought to be a slab-on-grade, but as construction progressed, an entrance hatch was discovered on the wall in the area adjacent to the original base slab. After further investigation, SPS determined that this part of the base slab was actually an elevated slab that had an old steam tunnel under it. The existing structural beams supporting the slab in this steam tunnel had never been maintained and had severely deteriorated over time to the point that they would not be able to carry the new loads. In many of the beams, slabs and columns, the steel rebar was fully exposed or completely deteriorated. Not only would these members require repair, they would also have to be strengthened to meet today's design codes. SPS immediately installed temporary shoring to support the slab until remediation and strengthening plans were established. To strengthen the beams, SPS employed an enlargement technique using a reinforced concrete jacket that bonds to each existing beam.

Repair of the below sea-level room that contained the grease recovery and processing system for all of the casino restaurants also proved to be a challenge. The concrete ceiling and three very large columns in the room had deteriorated to a point of structural concern due to a constant combination of high temperatures and humidity. Once the original ceiling structure was removed, formwork was placed and a new two-way slab and beam system was cast with new hangers and supports for the piping and the equipment. Then, reinforced enlarged sections were added to repair and strengthen the columns. These innovative repair and strengthening strategies allowed the casino to remain open during repairs and the project to be completed ahead of schedule.