Selective Demolition and Slab Replacement for Denver Industrial Floors

Before the saw cuts a failed industrial slab, someone has to find out what is under it. Old plants and yards in the Denver metro sit on ground with a long industrial history, and a floor that has carried forklifts, pits, drains and process lines for years can hide contaminated soil, abandoned utilities and voids. We demolish and replace industrial slabs with that unknown treated as the central planning problem rather than an afterthought.

Slab replacement is the answer when joints have spalled beyond repair, when the slab has curled or settled, when a process change needs new pits and trenches, or when a fluid leak has soaked the concrete and subgrade. It is not a patch. Done properly it removes the failed concrete, repairs the subgrade, installs new reinforcement, vapor control and drains, and returns a floor that meets today's flatness and load requirements.

We schedule the work in sections so a plant can keep running. The sequence of cuts, the protection of adjacent equipment and the timing of cure and reopening are as important as the concrete itself.

Dust, Silica and Contaminants Under the Floor

Cutting and breaking concrete generates respirable silica, noise and vibration. We use wet cutting, vacuum-equipped tools and enclosure or negative air where operations or product require it, and we monitor exposure for every crew on site and report it to the plant safety lead. Vibration from breakers can disturb sensitive equipment, so we choose hydraulic or saw-and-lift methods that protect nearby machines and foundations.

When the slab is removed, we stop and look. Stained soil, odors, sheens on groundwater or buried tanks and lines are handled under the owner's environmental procedures and the applicable regulations, with testing before soil moves off site. Lockout and tagout apply to every utility we cut, including electrical conduit, compressed air, steam and process piping that may run below the slab. We confirm each line with locating and plant drawings, then physically verify it.

Ground With a History

The metro's industrial districts carry real environmental lessons. The Rocky Mountain Arsenal was built in 1942 on 17,000 acres in Commerce City, listed on the EPA Superfund National Priorities List in 1987 and cleaned up for $2.1 billion with surface work finishing in 2010 and groundwater treatment continuing. Anyone breaking ground near the Rocky Mountain Arsenal area should assume that soil and groundwater history will be part of the conversation with regulators and lenders.

In north Denver, neighborhood activism in Globeville and Elyria-Swansea won a 1994 settlement with ASARCO that funded soil cleanup, a sign of legacy smelter contamination to check in due diligence near those industrial areas. Cleanup of the former ordnance plant site at the Denver Federal Center in Lakewood is overseen by the Colorado Department of Public Health and Environment. The pattern is clear: slab removal in older districts is a chance to see the ground, and a responsible contractor has a plan for what it finds.

The Sequence of Removing and Rebuilding a Floor

We start by mapping the floor: slab thickness, reinforcement, joints, drains, pits and embedded utilities, using scanning and plant drawings. We then lay out the removal in bays, saw-cut the perimeters, break and load out the concrete, and haul it to a recycler. The exposed subgrade is inspected, proof-rolled and corrected, with wet or soft areas undercut and replaced with compacted structural fill.

New work follows: vapor retarder where moisture-sensitive flooring is planned, reinforcement, dowels into the existing slab, forms for joints and pits, and concrete placed to the specified flatness. Slab details connect with our industrial concrete floor practice, which covers mix design, joint layout, curing and surface treatment. Final steps include joint sawing and filling, sealers or hardeners and re-striping of aisles.

Keeping the Plant Running

Few owners can close a whole building. We divide the floor into zones, build temporary partitions and walkways, and relocate production or racking from one zone at a time. Concrete cure time sets how soon a bay returns to service, and high-early-strength mixes can shorten it for a premium. We discuss with operations which areas must reopen quickest, and plan the pour order accordingly.

Access and logistics need planning as well. Trucks removing broken concrete and delivering new concrete have to cross docks and aisles used by the plant, so we establish routes, flaggers and delivery windows. For food, pharmaceutical and similar environments, we coordinate sanitation and contamination controls, and we seal debris loads. Warehouse operators will find the same planning applies to a warehouse floor replacement.

Why Two Slabs of the Same Size Cost Different Amounts

The price of slab replacement turns on what is underneath and around it. Thickness, reinforcement, the amount of subgrade correction, the number of embedded utilities to reroute and the required flatness all matter. Contaminated soil can change the budget dramatically: testing, special handling, transportation and disposal are often the largest variable.

We reduce surprises by investigating before pricing: borings or test pits, a ground-penetrating scan and a review of the plant's history. We carry clear allowances for unknown conditions, state unit prices for undercut and fill, and tell owners what each decision costs. Pairing the work with other improvements, such as new drains or a new equipment pad or foundation, can save a mobilization.

Demolition as Part of the Whole Project

Because we build as well as demolish, we plan removal to suit what comes next. We save slab edges that can be reused, protect columns and footings, and cut to lines that make the new joints work. If the owner is converting the building, this work leads naturally into our industrial demolition services for larger removals, and into advanced manufacturing floors that require tighter flatness.

Open the Floor With a Plan

Send us the plant layout, the problem you see in the slab and the areas that must stay running. We will walk the floor, propose a sequence and price the removal, repair and replacement.

Common Questions

Can we replace only the failed part of the slab?

Often yes. We cut out the damaged bays along joint lines and dowel the new concrete into the old. The key is making sure the surrounding slab and subgrade are sound, since failures can spread. We test adjacent areas and tell you plainly if a larger replacement makes sense.

How long before a replaced bay can carry forklifts?

With standard mixes, plan for about a week or more before heavy traffic. High-early-strength mixes can shorten this. We test cylinders to confirm strength before we release the area, and we protect new joints from impact.

What if we find contamination under the slab?

We stop work in the affected area, notify the owner and bring in environmental professionals for sampling. Soil is then managed according to test results and regulations. Because contamination is possible in older districts, we carry allowances and sequence the work so it can adjust.

Will demolition vibrate our equipment?

It can, which is why we choose methods that match your equipment. Saw cutting and lift-out limits vibration compared with hammering, and we monitor sensitive areas. Tell us about any precision machinery or instruments early so we can plan.

Do we need a permit to replace a slab?

Usually a building or demolition permit is needed, and stormwater and dust rules can apply on larger sites. We determine the local requirements, file the permits and arrange inspections of reinforcement and subgrade before concrete is placed.

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