Typically we like to limit the weight to about 40 lb/sqft on an unknown 4″ slab. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking.
How Much Weight Will 4 Inches of Concrete Hold?
When it comes to finding out how much weight 4 inches of concrete will hold, it’s important to understand the unique characteristics and qualities of concrete as a material. Concrete is a strong material, but its strength depends on its composition and the way it’s been treated. Additionally, the amount of weight it can hold depends on the surface it’s being used on and the size of the area being covered.
In general, 4 inches of concrete can hold up to 5,000 pounds per square foot. This means that if you have a 10-foot by 10-foot area, the total weight capacity would be 50,000 pounds. Of course, the exact weight capacity for a given area will depend on the type of concrete being used, the amount of reinforcement, and the surface area.
When it comes to using concrete for a specific application such as a driveway, the weight capacity can vary greatly depending on the materials being used and the method of installation. If a driveway is constructed using an aggregate-based concrete mix, then it will usually be able to hold up to 10,000 pounds per square foot. However, if the driveway is constructed using a polymer-modified concrete mix, then the weight capacity can be much