Floors fail where the work is hardest. A slab at a plant wears under forklifts, leaks under a chemical line, heaves over frost and cracks where a truck turns the same corner every day. Replacing it means breaking something that holds the building up, in a place that is probably still in use. We cut out and replace industrial slabs in Casper plants with a plan for dust, noise, traffic and the shutdown clock.
The work is three jobs in one. Demolition: saw, break, load and haul. Subgrade: find out why it failed and fix that first. Replacement: forms, steel, dowels, concrete, finishing, curing and joints. Skip the middle job and the new slab fails in the same place.
Owners usually come to us with a crack and a deadline. We start by looking at the full floor, not just the damaged patch, with the help of the industrial concrete floors trade crew. A repair that does not match the surrounding slab sets up the next failure.
Cut, remove, rebuild
First we locate everything under the slab: conduit, drain lines, grounding, process piping and old sumps. We scan, pothole and mark, then confirm with your maintenance team. Saw cuts define the edges so the new joint is clean. We break the old concrete in manageable pieces, load it and haul it to the disposal point, while the dust is controlled with water and vacuum.
Then we dig down to find the cause. Poor compaction, voids, wet soil, frost heave or leaks from broken lines are all common. We repair the subgrade, compact it, set a vapor barrier or base layer if the design needs it and place reinforcing steel and dowels at the joints. The pour is planned around mix, temperature, access and finishing time. A good finish crew is worth more than a good pump truck. We cast test cylinders at every pour, record the weather and the time and keep the records with the job. If the slab ever needs to be questioned, the answers are in a binder, not in anyone's memory.
Soils, history and what is underneath
Casper and the nearby towns have an industrial history. The old refinery that is now Platte River Commons operated from 1895 until the last barrel was refined in 1991, and the site is still recovering from contamination under a remedy agreement. In Evansville, a Superfund site involves groundwater contamination believed to come from former industrial operations. Not every slab sits on such ground, but every owner should ask what is underneath.
We do not dig on assumptions. When a site has a known history, we ask for the environmental reports, plan soil handling and coordinate with testing. If the ground under a slab is suspect, you want to know before the saw starts. Our Platte River Commons and Evansville pages describe the context.
Frost, slab design and approvals
The City of Casper lists a three-foot frost line to top of footing, a 3,000 air freezing index and severe weathering. Exterior slabs and unheated buildings feel those numbers. Joints, air-entrained concrete, drainage and subgrade preparation all respond to them. Interior slabs in heated buildings are less affected, but doors and edges are always the weak points, and a slab at a dock door sees thaw, salt-laden meltwater and heavy wheel loads in the same week.
A slab replacement may or may not need a permit. A structural repair, a change in use or a new equipment pad probably does. City commercial permits often call for engineered drawings, and permits last 180 days. We ask early. The engineer of record specifies thickness, reinforcement, joint spacing and concrete strength, and we test the concrete as it is placed.
Working in the shutdown window
Slab replacement in a live plant is a sequencing puzzle. We often break the floor into bays and replace them one at a time, keeping a path open for traffic. In a shutdown or turnaround, we may have only a short window to cut, break, haul, prepare, pour and cure. Concrete needs time, and we do not let a schedule skip curing.
Early-strength mixes and heated enclosures can speed the cycle in cold weather, but they cost more and need planning, so the decision to use them belongs in the schedule, not in the field on the morning of the pour. We work backward from the date the area must carry load. Check our phased construction method for how we keep traffic moving. If the area is also getting new equipment, we coordinate with equipment pads and foundations so the same pour handles both.
Dust, noise and heavy iron
Cutting concrete makes silica dust. We use wet cutting, vacuum attachments and barriers, and we monitor air where required. Noise and vibration are managed with schedules and, where needed, lower-impact methods. Breakers, loaders and trucks work in tight spaces, so we use spotters, lighting and exclusion zones.
Our teams attend your safety orientation. Excavations are sloped or shored, and we confirm utilities before we dig. Hot work and confined space entry need permits to work. At the end of every shift, we leave the area barricaded, lit and clear. Rebar ends get caps, trenches get covers, and the daily log records what was left open and why. Nobody should discover an open pit on the way to the break room.
Where this work leads
Slab replacement often leads to demolition of a larger area or a full building. Our industrial demolition services cover that scope, from selective removal to total teardown. Owners in metals and heavy industry and food and beverage plants most often ask for slab work as part of a modernization.
The affected area may be a bay in a manufacturing plant, a dock approach or a yard apron. Docks and aprons that see trucks often need loading zone paving with thicker sections and dowelled joints, and we coordinate that with the plant slab so the joints line up where the forklifts cross.
Show us the crack and the calendar
Send photos, the area size and the date it must carry load. We will probe the slab, review utilities and the soil history and give you a plan that fits your shutdown.
Common Questions
How do we know whether to patch or replace?
If the damage is local and the subgrade is sound, a patch may last. If cracks are widespread, the slab is curling, or water or voids sit under it, replacement is cheaper in the long run. We inspect and test before recommending.
Can you do it while we operate?
Often, in sections. We cut and replace bays one at a time, protect adjacent equipment and keep a route open. Noise and dust controls are part of the plan.
What if the soil under the slab is contaminated?
We stop, test and follow the owner's environmental plan. Sites with a known history, such as former refinery or industrial ground, need careful soil handling. We do not guess.
How long before we can use the new slab?
Curing time depends on the mix, the weather and the loads. Early-strength mixes shorten it, but heavy equipment should wait for the engineer's release based on test results.
Do you replace slabs outdoors in winter?
We avoid it. Concrete needs temperature protection to cure, and frost damage is possible. If the schedule demands it, we use heated enclosures, blankets and tested mixes.