Concrete Paving Excavation of your existing driveway will be necessary for the installation of the new concrete. Once the driveway is excavated the next step is to set forms. Typically the excavation of your existing driveway and setting of the forms are performed in one day for an average sized driveway. Before installing the new concrete driveway, we drill and install dowel rods into any adjacent concrete pavement (garage foundation, entrance apron and concrete sidewalks). When the ground shifts, the dowel rods help to prevent the different concrete slabs from shifting and causing an uneven surface. It is recommended to install 5” of 4000 Per Square Inch or PSI concrete on a driveway. This thickness of concrete will support continued car traffic and sustained parking in one location. An important fact about concrete is that it will crack. Because of its susceptibility to cracking we install control joints into the new concrete pavement. This is typically done by a hand tool or sometimes a small concrete saw. The control joints create weak points in the new concrete where the cracks are designed to occur. The typical life expectancy of a concrete driveway is 25 years.