Forklifts do not forgive a bad floor. A slab with a wavy surface shakes a loaded lift, wears out wheels and makes narrow-aisle racking unsafe, and a joint that spalls under hard-wheeled traffic turns into a daily repair. In a warehouse that moves produce, the floor is the highway inside the building, and every trailer turn depends on it.
General Contractors of Pharr places the interior and exterior slabs that commercial and industrial buildings live on: warehouse floors, dock-level slabs, freezer and cooler floors, mezzanine and equipment pads, processing room floors with drains and slopes, and the thickened sections under racking. We plan the pour sequence, joint layout, reinforcement, flatness targets, curing and saw-cutting as one operation, because the quality of a slab is decided by what happens in the first 24 hours after the concrete arrives.
A floor is also the last trade that owners notice when it works. We aim for that outcome. The slab is flat enough for the racking vendor, drains where the drawings say it should, and holds up to the first year of lift traffic without becoming a punch-list item.
Cold storage is growing fast around Pharr, and it changes what a floor has to do. The Pharr Economic Development Corporation blog reports a groundbreaking in July 2024 for a cold storage facility in Pharr Produce Park, and another operator broke ground on a 40,000-square-foot cold storage facility in Pharr on May 29. A freight company opened a 142,600-square-foot cold chain logistics center with multiple temperature zones near the Pharr-Reynosa International Bridge, FleetOwner reported in May 2026. Each of those temperature zones places a different demand on the slab.
A dry warehouse slab and a freezer slab are different products. The freezer needs insulation, a vapor barrier and some form of under-slab heat or ventilation so frost does not heave the floor, and the cooler next to it needs joint and moisture control for wet-down. Because buildings here often combine dry storage, cooler, freezer and cross-dock space under a single roof, one project may need three or four floor systems with transitions between them, and the transitions are where failures start.
We schedule and inspect formwork, dowel and rebar placement, concrete placement and finishing on most slabs, and we bring in specialty crews for laser-screed placements, polished or hardened surfaces, and freezer insulation systems. Laser screed machines produce flat floors efficiently on large pours, while hand screed rails still make sense for small rooms, dock pits and odd shapes. We choose the method per area and tell you why.
Placement day is the whole job. We confirm batch times and mix design with the supplier, check the vapor retarder and reinforcing before trucks arrive, and bring enough finishers to keep up with the set rate. In summer, a slab placed in the afternoon can set faster than the finishers can work it, and a surface that is closed too early or too late will craze and dust. We pour early and plan finishing around the weather, not the other way around.
Joint layout controls where the slab cracks. We place contraction joints on a regular grid tied to column lines, cut them promptly after finishing, and fill them with a semi-rigid material in forklift aisles so wheels do not chip the edges. Construction joints get dowels or armored edges when heavy traffic will cross them. Dock leveler pits, trench drains, floor drains in processing areas and slab depressions for equipment are formed before the pour, because cutting them later is slower and weakens the slab.
Flatness and levelness targets, usually written as FF and FL numbers, are specified for racking and narrow-aisle equipment. We measure the finished surface with a profilometer or straightedge within the window the specification allows, and we do not wait for the racking vendor to find the problem. Floors under tall racking also need the slab thickness and subgrade to carry point loads from the posts, which ties this work closely to concrete foundations and the compaction done during mass grading.
A distribution center slab is built for flatness and joint durability under constant lift traffic. A cold storage facility adds insulation, vapor control and heat. A food and beverage processing plant needs sloped floors, drains and surfaces that withstand washdown and chemicals. A flex or light industrial building usually carries a lighter slab with the option for tenants to cut in trenches and pits.
We help owners choose the right system for the tenant, not just the cheapest one, and we have a view on flex space that has to serve a changing tenant list. A building leased first to a dry-goods user and then to a produce handler needs a slab that can be adapted, and we can design with that in mind by thickening key zones or leaving block-outs. These choices are cheap during construction and expensive after.
The slab is designed by the structural engineer to the building code in force, and Texas Local Government Code Sec. 214.216 sets the 2012 IBC as the minimum municipal commercial code, with cities free to adopt later editions after a public hearing. We confirm the edition in each city before we price special inspection requirements. The Texas Department of Licensing and Regulation also requires projects costing $50,000 or more to be registered for accessibility review under the Texas Accessibility Standards, which affects slopes at doors, ramps and dock-adjacent walkways.
On a project with floor flatness requirements, the specification also controls testing frequency, cylinder breaks, moisture testing before flooring is applied, and curing method. We keep all of that documented. When a coating or epoxy system will go over the slab, the moisture and surface-profile requirements of the coating manufacturer become part of our scope.
Slab price is driven by thickness, reinforcement type, area and the finish required. Fiber reinforcement, welded wire mesh and steel bars each have different cost and crack-control behavior. A polished or hardened surface adds cost but saves maintenance. Freezer systems add insulation, under-slab heating, wearing surface and a thermal break at the doors.
The cheapest slab is rarely the least expensive floor over ten years. We price options side by side, including the cost of joint maintenance and dust control, so the owner sees the whole picture. For public and institutional owners, our public sector approach adds documentation and testing formats that fit their procurement rules.
General Contractors of Pharr can review the tenant requirements, racking plan and refrigeration design, and return a slab scope with options and prices.
It depends on the equipment. Standard forklift traffic tolerates a normal flatness, while very narrow aisle and high rack systems need tighter FF and FL numbers. The racking and lift vendors publish requirements, and we build to the most restrictive one that applies to the lease.
Typically after the slab reaches the strength the engineer specifies and any required moisture or flatness testing is complete, often a few weeks after the pour. We align the racking delivery to the cure schedule so installers are not waiting on the floor or standing on it too early.
Yes, in most designs. Without heat or ventilation, the cold can freeze moisture in the soil and lift the slab. The Valley's mild winters do not protect a freezer room from this. The refrigeration engineer and the structural engineer should coordinate the system.
Yes, with planning. We schedule early placements, use set-control admixtures when the mix designer approves, shade or fog the slab to control evaporation, and cure promptly. A slab placed carelessly in July will show it for years.
Most cracking comes from shrinkage, restraint and joint timing. Cutting joints late, restraining the slab at columns or walls, and poor curing all contribute. We address each in the plan, though some hairline cracking is normal in concrete and is not a defect.
Every project starts with the site, the schedule and the approvals it needs. Request a project review and we will walk through yours.
Tell us about the property, the building, the schedule and the approvals you expect. We will review the scope and follow up with next steps.
