Wash bays demand concrete that slopes toward drains, integrates with oil-water separators, and resists the chemicals used in heavy equipment cleaning. We engineer the slab thickness for loaders and dump trucks, position trench drains to capture all runoff, and finish the surface for grip and durability. Every project includes a free written estimate and a firm schedule.
Wash water carries hydrocarbons, sediment, and detergent residue that cannot enter the storm system under Las Vegas and Nevada discharge regulations. The concrete slab must be engineered to route all wash water to a trench drain system that feeds an oil-water separator before discharge. This is not a standard concrete pour; it is a system.
We size the slab for the heaviest equipment that will use the bay, establish slope in every direction toward drain collection points, integrate the separator with the drain layout, and apply chemical-resistant finishes if your wash cycle includes degreasers or alkaline cleaners. The result is a bay that handles daily use without pooling, surface degradation, or regulatory violations.
We measure the bay footprint, identify the heaviest equipment that will use it, determine slab thickness and reinforcement, locate trench drains and the separator connection point, and confirm discharge routing before any excavation begins.
Excavate and prepare subgrade
The bay area is excavated to design depth, subgrade is compacted to specification, gravel base is placed and leveled, and trench drain lines are routed and set before forms are installed.
Form and pour with slope
Forms are set with the engineered slope toward drain collection points, rebar is placed for equipment loads, concrete is poured and finished with a broom texture for foot grip, and slope is verified with a level and water test before the slab cures.
Install separator and test system
Trench drain grates are set, the oil-water separator is connected to the discharge line, the entire system is tested with water to confirm drainage and separator function, and the bay is handed off ready for operation.
Critical detail
Getting Slope Right the First Time
A wash bay without proper slope becomes a water-holding basin that evaporates slowly and creates standing water where equipment sits. Every direction across the slab must slope toward a trench drain, and the slope must be consistent so water does not collect in corners or low spots. We verify slope during the pour using a level and water flow test, not after cure, because slope cannot be corrected once concrete hardens.
Coordinate with manufacturing facility planning and environmental compliance for separator sizing and discharge details. The wash bay is one component of the larger warehouse and industrial concrete strategy on your property.
Trench drains, oil-water separators, slope verification and storm-water compliance.
Storm-water regulations require hydrocarbons to be removed before wash water enters the storm system. Oil-water separators are the engineered solution; without them, the wash bay's discharge violates discharge limits and can trigger fines or shutdowns.
During the pour with a level and a water flow test, then again after cure. Every direction across the bay must carry water to a trench drain; pooling anywhere means the slope is wrong and needs correction before the slab cures.
Sometimes, if it can be sloped (often it cannot), drained (usually needs new trenches cut), and routed to a separator (almost always new work). The economics often favor a purpose-built bay; we will assess case-by-case.
Yes if degreasers or harsh detergents are part of the wash cycle. Standard concrete surface degrades under repeated alkaline or solvent exposure; chemical-resistant treatment extends slab life dramatically.
Several weeks from excavation through cure and separator install. The full schedule is in the quote, including time for the environmental discharge connection if regulatory review is required.
Client reviews
What Las Vegas Operations Say About Their Wash Bays
New wash bay with proper slope to trench drains and the oil-water separator we needed for compliance. Discharge passes regulatory inspection, equipment gets washed faster, no more puddles in corners.
Z. K5
Fleet Manager, Las Vegas
★★★★★
They engineered for our wheel loaders and dump trucks, the heaviest stuff we run. Slab has held under daily traffic, drainage works through every wash. Right tool for the actual fleet.
Y. K5
Operations Director, Henderson
★★★★★
Wash bay with chemical-resistant surface for the degreaser we use. Three years of operation, no surface degradation, separator processes hydrocarbon properly. Compliance side covered.
Q. K5
Mining Operations, Boulder City
★★★★★
They tested the slope with water before signing off. Pooled in one corner; they corrected it before cure. Final result drains perfectly. Real install discipline.
X. K5
Construction Yard Manager, North Las Vegas
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