Winner: Other

The Atmosphere is a 460,603-square-foot student apartment building with 12 stories of 6000-psi post-tension concrete including an outdoor terrace, planter walls, topping slabs, sidewalks, curb, and gutter. The post-tensioned concrete needed to reach 3,000-psi in 24 hours to stay on schedule.

Stevens Construction self-performed the 12-story structure to create ten levels of residential housing for 341 units and 106 parking spaces on two levels. They constructed the outdoor terrace, terrace topping slabs, and planter walls. Parisi Construction used a 4,000-psi exterior concrete mix for pouring the sidewalk, curb, and gutter.

The construction sequence for the foundation went from east to west. The master plan allowed the construction of a whole-floor footprint to be constructed in this sequence. As the foundation work progressed, the type of soil changed dramatically on the far west portion of the site.

The typical bearing soil on the east side had a heavier clay characteristic, and the soil on the west end was a finer sand-type soil. The different soil negatively impacted the dewatering systems—and the soil-bearing capacity, requiring soil stabilization efforts for the large structure.

19,000 cubic yards of concrete were poured with the project being completed in August 2024.