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We handle sitework and structural concrete for commercial and industrial projects across St Louis, MO. Services include equipment pads, retaining walls, piers, pedestals, and structural slabs built to engineered specs. Our experienced crews coordinate with other trades to keep your project moving on schedule.
St. Louis Concreters provides professional structural concrete throughout St Louis, MO, Missouri and the surrounding area. Our licensed, insured crew delivers safe, clean, on-time work with a free estimate before anything begins. Call (314) 207-8572 or request your free quote.
Sitework and structural concrete for St. Louis properties
Sitework and structural concrete are the foundation of every reliable building in St. Louis. At St. Louis Concreters, we handle the work that happens before finishes, flooring, or landscaping. That includes grading, excavation, utilities coordination, and the concrete that actually carries the weight of your structure.
In our area, clay-heavy soils, freeze-thaw cycles, and older utility lines under many properties all affect how structural concrete should be designed and built. Our crews look at your site as a whole, not just the slab. We evaluate drainage patterns, existing structures, and access for trucks and equipment so you end up with a stable, code-compliant base that does not create problems later.
Whether you are building a new home addition, a small commercial space, or updating an older St. Louis property, our focus is the same. We create a predictable, well-prepared site and a structural concrete system that matches local soil conditions, city or county requirements, and your long-term plans for the property.
How we prepare your site before any concrete is poured
Quality structural concrete starts with proper sitework. St. Louis Concreters begins with a walk-through of your property to mark out structures, access points, and areas that need protection like trees, neighboring fences, and sidewalks. We coordinate with you on staging so trucks and equipment do not block streets or alleys longer than necessary.
Next, we manage excavation and grading. For foundations, garages, and structural slabs, we dig to the specified depth and remove unsuitable materials like organic soil or soft fill. In older St. Louis neighborhoods, we frequently encounter buried debris or abandoned utilities, which we remove or work around safely. We then bring in compactable base materials, usually a crushed rock aggregate, and compact in layers with plate tampers or rollers to reach the density required by plans or local codes.
Drainage is a critical step that many projects overlook. We shape the subgrade so water moves away from your structure and, when needed, install drain tile, sump pit connections, or foundation drains around basements. We also rough in utility penetrations so plumbers and electricians can bring services through the concrete later without cutting or damaging your structural work.
Structural concrete options for local homes and businesses
Structural concrete is not one-size-fits-all. In St. Louis, we typically install three main types for small to mid-size projects: spread footings and walls, structural slabs, and piers or grade beams. St. Louis Concreters helps you understand which system fits your design, soil conditions, and budget.
Spread footings and walls are common for basements, crawlspaces, and load-bearing walls in both residential and light commercial buildings. We set formwork to the engineered dimensions, place reinforcement steel, and pour concrete to the specified strength, often 3,500 to 4,000 psi for typical projects.
Structural slabs are used for garage floors, shop floors, and some commercial spaces where the slab carries concentrated loads like vehicles or equipment. These slabs usually require thicker sections, more rebar, and precise subbase prep. For unstable or fill soils, we may recommend piers or grade beams, where loads are transferred down to more stable strata. On hillside lots around south and west St. Louis County, piers and grade beams are often a smarter choice than a simple slab-on-grade.
Reinforcement, mixes, and details that matter in St. Louis
The strength of structural concrete depends on more than just the thickness of the pour. St. Louis Concreters pays close attention to reinforcement, mix design, and detailing so the structure performs in our climate.
Rebar layout is based on engineering or building code guidance. We tie bars securely, maintain chair-supported cover from the ground, and pay special attention to corners, openings, and transitions, where cracking is most likely. For some slabs we may use welded wire reinforcement, but for structural members and high load areas we rely on properly sized and spaced rebar.
Concrete mix design also varies. In St. Louis we deal with freeze-thaw cycles and de-icing salts, especially in garages and exterior structural elements. We often specify air-entrained mixes to improve durability. For interior structural slabs or heavily loaded areas, higher psi mixes or additives like water reducers can help achieve the designed strength without making the mix too wet. We control water added at the truck so you get a dense, durable product rather than a watered-down slab that will dust or crack early.
What affects cost for sitework and structural concrete
Two properties that look similar from the street can have very different costs when it comes to sitework and structural concrete. St. Louis Concreters is upfront about the factors that tend to move the price up or down so you can plan realistically.
Site access is one of the biggest drivers. Tight city lots, limited alley access, or steep driveways may require smaller equipment, more manual labor, or concrete pumping, which can add cost. Soil quality matters too. If we encounter soft clay, buried debris, or old fill, we may need to over-excavate and bring in more rock base or engineered fill.
Structural requirements also affect pricing. Thicker slabs, more rebar, piers, grade beams, and higher strength mixes all add materials and time. Local permitting and inspections are another consideration. City of St. Louis, St. Louis County, and nearby municipalities have slightly different standards. We help you navigate those requirements, but inspections and engineering, if needed, do add to the budget. Discussing your intended loads, possible future expansions, and any schedule constraints early lets us tailor a scope that balances performance and cost.
Common problems we prevent and how we handle repairs
Many of our calls around St. Louis involve issues that started with poor sitework or under-designed structural concrete. We regularly see settled garage slabs, cracked basement walls, and heaving at additions where the original contractor cut corners on base prep or drainage.
To prevent these problems, St. Louis Concreters focuses on compaction, moisture control, and reinforcement detailing from the start. We use compaction testing when specified, ensure positive drainage away from foundations, and do not skip control joints or expansion materials where needed.
If your existing structural concrete is already failing, we evaluate whether repair, partial replacement, or full reconstruction makes the most sense. For example, a cracked but stable foundation wall may be reinforced with carbon fiber straps or interior bracing, while a severely settled slab might need to be removed and replaced on a properly prepared base. We provide straightforward assessments and explain the underlying cause so you do not end up paying twice for the same problem.
What St. Louis property owners should know before hiring
Before you choose a contractor for sitework and structural concrete, it is worth asking a few specific questions. Ask how they will verify soil conditions, what type of base material they use, and whether compaction will be done in lifts instead of all at once. In St. Louis, you should also ask how drainage will be addressed, especially if you are near the river, at the bottom of a hill, or in an area known for wet basements.
St. Louis Concreters encourages clients to request a written scope that specifies slab thicknesses, reinforcement sizes and spacing, mix strengths, and where vapor barriers or insulation will be installed. Clear details help avoid misunderstandings and give you something concrete to compare between bids.
Finally, make sure your contractor is familiar with local codes and typical inspection processes for your municipality, whether you are in the City of St. Louis, Clayton, Florissant, or any surrounding area. We work across the metro area and coordinate with inspectors and engineers to keep projects moving. When the ground work and structural concrete are done correctly the first time, everything built on top lasts longer and performs better.
