The Collective at Tucson – Main Gate

15-STORY POST-TENSIONED CONCRETE RESIDENTIAL TOWER

Tucson, Arizona

The Collective Apartments at Main Gate is a 15-story, two-winged apartment tower within walking distance of the University of Arizona campus in Tucson. It is part of a larger project providing a boutique hotel, ground-level retail and restaurants, and a public plaza connecting all the spaces. The development provides both a destination and family-friendly gathering space for young professionals, university staff, students, and their families.

Ceco was selected to provide the full concrete frame for the apartment tower due to Ceco’s ability to accelerate an already aggressive schedule. The scope of work included supplying 17,700 cubic yards of concrete and 16 levels of concrete slabs. The first two levels (one below grade and one slab on grade) were constructed with 12-inch-thick slab with conventional reinforcing. The remaining above-grade levels were 8-inch post-tensioned slabs.

Formwork used included Ceco’s gang wall forms for the two elevator cores, Peri A-frame, and Ceco panels for basement perimeter one-sided walls, gates column forms, and 16-foot Ceco perimeter tables with the Ceco HV system at interior locations.

The two wings were poured as one floor plate with two pours per floor. The field crews moved back and forth between the wings to ensure continuity of material, manpower, and subcontractors. To minimize disruptions for occupants of nearby buildings, concrete pours took place during the early mornings with vertical concrete placed the same day.

The Ceco team topped out six weeks earlier than the original timeline.

For more about the project, see “New Housing Rises Steps Away From University Campus” on our news page.

Project Documents

Project Sheet