What is the correct thickness of concrete driveway?

If you want to lay your concrete driveway, or if you are buying prices from contractors, you may be confused about how thick your driveway should be. This article will discuss the thickness of the driveway.

Weight

The amount of concrete required for a driveway depends on the weight of the vehicles that are going to use it. A four inch thick concrete slab may suffice for most households with cars, trucks or SUVs. It is based on a 10,000 pound car. Or less. For example, an average SUV or pickup truck weighs between 4,000 and 6,000 lbs, and even a boat on a trailer usually weighs no more than 8,500.

Where you will need a thick driveway if you plan to have heavy vehicles on it. For the average household, that big car is often an RV. Most RVs start at 10,000 lbs. And go up to 30,000 (not necessarily considering the extra weight in it). So if you are looking for space for your personal RV, you may want to go up to 5 or 6 inches thick for your concrete driveway.

Is fat better to prevent cracking?

The concrete will break. Duration However, being fat does not always mean that you are guaranteed less cracking. Usually, cracking is caused by other factors that may be related to the thickness, but this is not the case. Reason By thickness. For example, as mentioned above, if too much weight is placed on a thin concrete driveway, yes, it can eventually cause cracking. Another major cause of cracking is the lack of a solid foundation under the driveway. Concrete performs best on solid surfaces with no movement. In areas where the soil is mostly sand or clay, severe cracking is more likely. And, in such cases, a thinner driveway will be affected more quickly than a thicker one. However, a good contractor will know how to lay the proper foundation to prepare the ground for a concrete slab, so whether the driveway is four inches or five inches, take precautions to prevent excessive cracking. Have been made. Similarly, the use of wire mesh or rebar (reinforcing bars) in laying concrete will maintain the integrity of the concrete for a long time, regardless of the thickness of the slab.

Price difference

Although job pricing itself has many variables and can fluctuate across the country, moving from a four-inch-thick slab to a five-inch-thick slab costs about 20% more. However, adding this extra inch increases the weight capacity of your driveway by 50%.

If you walk four inches thick, you will save money because you do not need a rebar to strengthen that thickness. Most contractors use the said wire mesh which is quite cheap and still very impressive.

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