Many people will need to install a culvert, for example when their driveway needs to go over a drainage ditch. A culvert simply diverts the water while providing strength for the construction on top of it. Culvert pipes can come in a number of materials, such as plastic, metal or concrete. Installing them, however, is not as easy as it looks.
Speak to your local building authority to get permission to build a culvert in your driveway. They can also give you advice as to the size pipe to use.
Draw chalk lines across the driveway in the area through which you want to place the culvert. Make sure you leave a gap between the lines of at least 1.5 times the diameter of the culvert.
Cut through the driveway using the saw. Remove all pieces of asphalt, tarmac or concrete. Now dig a trench in the area that you have cut away, making sure that the slope of the trench falls with the flow of water, to ensure that all water drains away from the area.
Lay gravel along the bottom of the excavated trench to a depth of about 4 inches. Lay the culvert onto the gravel.
Fill the rest of the trench with gravel or soil, and compact it by tamping it with a piece of lumber. Lay a layer of concrete or asphalt on top and ensure it is flush with the existing road or driveway surface.