Winner: Industrial

The 305,000-square-foot industrial facility in West Salem used more than 14,500 cubic yards of ready-mix concrete for interior slab-on-grade, foundations, parking lot paving, and site concrete.

The interior floor mix was designed for 4,000-psi at 28 days with a maximum shrinkage of 0.40. It incorporated Type 1L cement, Class C fly ash, #4 and #67 coarse aggregates, natural sand, a mid-range water reducer, and 7.5 lbs. of macro fibers per cubic yard, with a water cementitious ratio capped at 0.45 to further control shrinkage.

A superflat slab area was required to meet the owner’s ASRS system specifications. This section was successfully placed as a single 35,000-square-foot pour spanning more than 160 feet. The project also included a fiber-reinforced mezzanine topping slab.

Remarkably, the entire interior slab was completed in under two weeks to accelerate the owner’s schedule. Although the exterior pavement was initially designed as asphalt, minimal cost differences enabled the owner to upgrade to an unreinforced concrete parking lot.

The concrete contractor placed over 180,000 square feet of exterior pavement in under two weeks, while coordinating with multiple active trades and maintaining project momentum.