On most of the industrial and manufacturing work we run around Greenville, the concrete crew and the mechanical crew are on the same footprint at the same time — rooftop unit curb pads, floor penetrations for ductwork runs, outdoor condenser pads, interior housekeeping pads for air handlers. We coordinate HVAC subcontractors on projects where we're already pouring the concrete, so the mechanical scope lands on schedule instead of getting bolted on after our crews have already moved off site.
We don't run duct or pull refrigerant line ourselves — HVAC installation is a licensed mechanical trade, and we bring in and manage the subcontractor doing that work. What we do control directly is the concrete side of the interface: rooftop unit curbs poured to the mechanical spec before roof dry-in, floor sleeves and penetrations located and formed before we place slab instead of core-drilling holes after the fact, and equipment pads sized and reinforced for the condensers, chillers, or package units going on top of them.
Hunt County's industrial base runs the gamut from unconditioned warehouse shells to precision manufacturing floors that need tight temperature and humidity control for assembly work — the kind of controlled-environment space that shows up in the electronics and precision-manufacturing plants clustered around the Greenville airport and the I-30 corridor. Those floors get built differently from a standard distribution box, and the mechanical rough-in has to be locked down before we place the slab, not worked around afterward.
Sequencing is the whole job. We sit down with whichever mechanical contractor is on the project — yours or one we've brought in — before the first concrete truck shows up, mark every penetration and curb location on the pour plan, and hold that plan through form-up and placement. It's a lot cheaper to get it right in the plan than to saw-cut a slab six weeks after we've cured it.
