The quality of the completed concrete driveway always begins with good planning. Spending time at this stage is always a wise decision that can help to eliminate possible problems later on. One of the first things to consider is size.
The suggested width for a single-car driveway is 8 to 9 feet. For double width, plan to use 15 to 18 feet. If the distance from the street to a two or more car garage is long enough, the initial entry approach can be of single-car width and then widened near the garage to accommodate all car stalls. If space is available, extra parking or a turn-around area can be included. Also, the planning stage is the time to consider adding that concrete patio, sidewalk, or porch addition.
As for thickness, nonreinforced pavement 4 inches thick is standard for passenger car driveways. For heavier vehicles, a thickness of 5 inches is recommended. To eliminate standing water, the driveway should be sloped towards the street a minimum of 1%, or 1/8 inch per foot for proper drainage.