The thickest part of a concrete driveway is going to be the part in which the driveway meets the street, and this part should be about 6 inches thick. Find out how expansion joints and steel rebar are used to contain cracks that occur in the winter with help from a home remodeling specialist in this free video on concrete driveways.
I'm William Perkinson and I'm here to tell you about the thickness of a concrete drive. A properly installed concrete drive should give you years of good service with minimal maintenance. The most important part of the concrete drive and the thickest part is going to be where it meets the street. Your codes department for your city, your building codes are going to tell you that this part, the apron or the skirt here should be six inches thick. When it goes into the body or the field of the driveway it is generally about four inches thick. Now there is two things that come together to make it a good and solid and proper pour. Number one, are expansion joints which you see many of here and I'll explain about those in just a second and the other is reinforcement with steel rebar or steel mesh. The most obvious thing that you can see here are the expansion joints. Now since concrete is rigid it is going to crack in extreme temperatures. With cold it is going to contract and form a crack and then with heat of course it is going to expand. Now what your builder or your concrete contractor is going to do is to cut control joints in here so that the breaking and cracking is going to be done at these points so it is a healthy break or a proper break. Alright we have contained the cracks to the control joints. Now when it does crack we don't want it to open up and become unsafe to where part of the concrete would rise up and you might trip over it so to handle that during the pouring of the concrete we add steel rebar or steel mesh. Now this is put down before the concrete is poured and then pulled up into place so it is suspended within the six inches on the apron of the concrete and somewhere suspended in the four inches in the field here. Now your concrete may feel hard and ready to walk on in a matter of hours from pouring but don't let that fool you. It is still pretty soft. It needs at least a day before you walk on it and a minimum of one week and proper curing of two weeks before you put something as heavy as a vehicle on it. I'm William Perkinson and that's the thickness of concrete.
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