A 3,000-acre master-planned industrial park with interchanges to two railroads asks a contractor for a particular kind of concrete: floors for buildings that range from 60,000 to 1,000,000 square feet, with truck courts and rail-side pads outside them. That describes Great Western Industrial Park in Windsor, where, per a February 2018 announcement, sites run from 5 to 200 acres and rail connects to both Union Pacific and BNSF.
Heavy manufacturing is already part of the park's story. Its tenants have included wind energy, imaging, ethanol, oilfield service, composites and food companies, and a developer release in April 2015 counted about 1,500 workers there. In February 2021 an announcement said wind turbine blade production would move to Windsor, with about 150 added jobs expected. Blade and composite plants load a floor with molds, cranes and long-span fixtures, so flatness, thickness and joint layout matter more than the price per square foot suggests.
In town, the main business district runs along State Highway 392 with a BNSF line north of Main Street, and Windsor sits at 4,797 feet in Larimer and Weld counties. We build for the park and for the town, and we plan each pour around the specific floor the owner will live with.
We coordinate trade partners for the subgrade, forming, reinforcing and placement of industrial concrete floors, and we pave the exterior with truck courts and dock aprons sized to the loads the owner expects. The two have to be designed together, because a dock apron that settles against a floor slab is a problem for every truck that backs into it.
Rail-side concrete adds one more party. The railroad's clearance rules, track geometry and drainage requirements govern anything near the line, and the owner's slab must stop where the railroad's work begins. We mark that line on our drawings early and ask the owner who coordinates with the carrier, since a missed approval can hold a pour for weeks.
Underground work gets the same attention. Process water, sanitary service, fire lines and electrical duct banks cross a large industrial lot in a pattern that is easy to disturb later, so we record every depth and offset and mark sleeves through the slab before the reinforcing goes in. A floor with the right sleeves is cheaper than a floor cored after the fact.
The park's range of building sizes covers manufacturing plants, distribution buildings and everything between. A 1,000,000 square foot floor at six inches thick is roughly 18,500 cubic yards of concrete, and a placement of that size is organized in lanes and bays with a defined joint layout, testing frequency and curing method, not poured as one operation.
Many of the larger shells are tilt-wall buildings, with panels cast on the slab and lifted into place. We coordinate slab pours with the panel schedule so the casting bed is cured and flat when the forming crew arrives, and the compound we apply to the floor is chosen so it does not interfere with the panel bond-breaker.
A floor this size takes weeks. We divide it into lanes, plan the placement order so that adjacent lanes are not poured against fresh concrete, and arrange mixer deliveries so the screed never waits on a truck. Saw-cutting follows the placement closely, because joints cut late allow random cracks to find their own path.
Weather is part of the sequence. In winter we carry protection and heat, and in summer we stage evaporation control and early starts. We tell the owner in advance how many pour days we expect to lose to wind, cold and rain at 4,797 feet, so the building enclosure and equipment installation can be scheduled around real numbers.
Thickness, reinforcing and flatness specifications drive the price of an industrial floor more than anything else, and super flat floor slabs for narrow-aisle or automated storage cost more than a standard warehouse finish. We price each tolerance separately so an owner can see what a tighter floor adds.
On site, the other drivers are import fill, subgrade treatment, dowel baskets at joints and the distance from the batch plant. Open land with predictable soils is the best case, and we confirm it with borings rather than assume it. When a site needs more subgrade work than expected, we explain the quantity and the method before the cost appears on an invoice.
Windsor sits between Greeley and Johnstown, and owners with property in more than one of those towns often benefit from a single mobilization. We schedule crews and equipment so work in one town leads into the next.
We also work directly with industrial and manufacturing owners who are expanding existing plants, where new slabs have to meet old ones at the same elevation. For those projects we survey the existing floor, plan the joint between old and new, and set the protection needed to keep production moving.
Give us the floor specification, the rail requirements and the delivery date you are working toward. We will return a lane plan, quantities and a pour calendar written for the season.
The railroad controls anything near its track, including drainage, clearance and crossings. The owner's concrete has to be designed and built so that it does not interfere with the line or send water onto it. We identify the interface early, keep our work outside the carrier's zone unless approved and make sure the schedule reflects the carrier's review time.
It depends on thickness, but the arithmetic is simple. A floor of 1,000,000 square feet at six inches thick requires roughly 18,500 cubic yards. A 200,000 square foot floor at the same thickness needs roughly 3,700 cubic yards. Add thickened edges, dock pits and reinforcement allowances, and we quote the final quantity from the drawings.
Yes. Heavy equipment often needs a thicker section, deeper footings under machine bases and tighter control of vibration and flatness. We review the equipment schedule with the engineer, coordinate anchor bolt templates for the machine foundations and plan separate pours where isolation joints are needed.
Spring and fall are easiest, but a well-planned winter or summer pour can work. Cold requires heat and blankets, and summer requires evaporation control and early starts. The enclosure schedule matters as well, since a closed building lets the slab cure under controlled conditions. We plan with the owner's date and tell them what protection that date requires.
We set the utility layout before the subgrade is finished. Mains, laterals, sleeves and duct banks are installed, backfilled in tested lifts and surveyed, and the survey is checked against the slab drawings. Anything that must pass through the floor is sleeved and marked on the reinforcing plan. That order avoids trenching through a new slab, which is among the most expensive repairs on an industrial site.