A slab is the foundation of whatever sits on it, and the spec follows the use. A shed pad, a shop floor with a vehicle lift, an RV pad, and a room addition slab are four different designs: different thicknesses, different reinforcement, different base prep. We spec each slab from how you will load it.
We pour slabs for garages, shops, sheds and outbuildings, RV and boat pads, hot tubs, generators, additions, and equipment foundations.
What you get
Shop, shed, and barn slabs across Douglas County
Slab work is where rural Douglas County keeps us busy: shop buildings and pole barns, shed pads, barn floors and feed areas, grain bin pads, and equipment parking. Each gets designed from the load down. A riding mower shed wants 4 inches; a shop that will see a loaded trailer and a lift wants 5 to 6 with reinforcement sized to match.
Pole barn slabs pour after the building stands, which takes coordination on grade and door thresholds. We set finished floor height against your door plans, pitch wash bays and animal areas to drains, and float the slab smooth where you will roll toolboxes and creepers.
Anchor bolts, interior footings for lifts or mezzanine posts, trench drains, and conduit sleeves all cost little when planned and plenty when retrofitted. Bring us the building plans and the wish list, and we pour the slab that the next 30 years of use actually needs.
Slab specs, vapor barriers, and cost
Standard residential and ag slabs in our market run $6 to $10 per square foot depending on thickness, reinforcement, and site prep, with thickened edges and footings priced by the foot. A 30 by 40 shop slab typically lands between $8,000 and $13,000 complete.
Under-slab details depend on use: vapor barriers under any space that may be conditioned or finished, rock base compacted in lifts everywhere, and fiber or rebar reinforcement chosen by span and load rather than by habit. Saw-cut control joints go in on a grid sized to the slab thickness.
We pour air-entrained exterior mixes for pads exposed to weather and harder-troweled interior mixes for shop floors, because the right mix for one is wrong for the other. It is a small specification detail that shows up ten winters later.
Site work, access, and rural realities
Rural slab jobs live or die on site work. We handle the cut and fill, bring in and compact rock, and set grades that keep water moving away from the building. On raw sites we walk drainage with you before anything else, because a perfect slab in a low spot is a perfect problem.
Access drives our pricing honesty: how close the mixer gets, whether we pump, and what the route in does to a yard or a field. We plan pours around weather windows and ground conditions so a ten-yard truck does not leave ruts you mow around for years.
Outbuilding slabs around Douglas, Leavenworth, and Franklin counties make up a growing share of our calendar. If your building package is on order, call before the erector schedules; slab-first sequencing is smoother and cheaper for almost every pole structure.
Hot tub pads, generator pads, and A/C condenser pads round out the small end of slab work, and we batch them with nearby jobs to keep prices sensible. Each has a spec worth respecting: hot tubs concentrate serious weight, generators want anchor bolts placed to the manufacturer template, and condenser pads want to stay dead level for compressor life.
Slabs for Douglas County properties
Slab demand around Lawrence splits between town and country, and the work differs. In town, it is garage slabs, shed pads, and addition slabs on established lots where access planning matters: getting equipment and concrete to a backyard through a gate takes staging that we sort out at the estimate. Outside town across Douglas County, it is shop buildings, pole barn floors, and equipment pads where the slabs are bigger and the loads are heavier.
Shop and outbuilding slabs are a specialty worth doing right. A 30 by 40 shop floor that will carry a vehicle lift, a welding table, and a tractor needs more than the four-inch default: we design thickened edges, lift footings, and reinforcement for the point loads, and we place anchor bolts and conduit before the pour so the building goes up clean. Owners building shops out here usually plan to use them hard for decades, and the slab should match that plan.
Every slab in this soil gets the same non-negotiable base treatment. Douglas County clay cannot carry a slab directly: we cut it down, place granular base, and compact in lifts, with moisture barriers under any slab that will be conditioned or finished space. Skipping base prep is how local slabs end up cracked and settled in five years, and it is the corner that low bids cut because you cannot see it after the pour. Ours is in the written scope where you can.
Where we do this work
We provide concrete slab installation across Lawrence and Douglas County:
Concrete Slab Installation: common questions
How much does a concrete slab cost?
Simple pads run $6 to $10 per square foot. Reinforced shop floors with thickened edges run $8 to $14. Load requirements and access drive the range, and we quote exactly after a site visit.
How thick should my shop slab be?
Four inches handles general use. Five to six inches with rebar covers vehicle lifts, trucks, and equipment. Tell us the heaviest thing the floor will carry and we will spec from that.
Do you pour slabs for metal buildings and pole barns?
Yes, including thickened edges, anchor bolt placement to the building plan, and coordination with your building supplier on dimensions and tolerances.
Do slabs need footings?
Pads and floating slabs do not. Slabs that carry building walls need thickened edges or footings per the building design and local requirements. We build to the plan either way.