A standard garage slab should be at least 4 inches deep, depending on the subgrade condition (100 mm). You can raise the thickness to 6-inches if the garage has heavy machinery in it or heavy shelving loads. The concrete slab should be at least four inches thick. When heavy machinery sits on it, it needs to be thicker.
How Thick Should a Concrete Garage Floor Be?
Concrete garage floors are an essential component of any garage, providing a strong and durable surface for storing vehicles, tools and equipment.
But, how thick should a concrete garage floor be to ensure a solid, stable and long–lasting surface? The thickness of a concrete garage floor will depend on several factors, including the purpose of the floor, the size of the garage and the weight of the vehicles and equipment stored in the garage.
In general, a concrete garage floor should be at least 4 inches thick. However, if the garage will be used to store heavier vehicles and equipment, the concrete should be at least 6 inches thick.
When preparing the area for a concrete garage floor, the installer should first remove any existing concrete and then grade the area to ensure a level surface.
The surface should then be covered with a layer of gravel, which will help promote drainage and provide a stable base for the concrete.
After the gravel is in place, the installer should spread a layer of sand and tamp it down to create an even surface for the concrete to be poured on. Once the area is properly prepared, the concrete can then be poured and leveled. The installer should use a 2 x 4 or other straight edge to ensure the concrete is level
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