How Do You Build A Shed Foundation On Uneven Ground?
Sheds and outbuildings have many different foundation options when placed on level ground. However, the methods for building on uneven ground can become quite involved and expensive. Pier foundations offer a good compromise. They are relatively cheap, simple to produce, and allow flexibility when deciding the final level and height of the floor. Lay out the corner post positions and mark with a small stake. Pull a measurement line diagonally across the foundation from corner to corner to check it for square. Hold the tape at the level of the highest corner to get an accurate corner-to-corner measurement. Dig a post hole at each marked corner about 2 feet deep and 10 to 12 inches in diameter. Dig the holes vertically, not perpendicular to the surface of the sloped ground. Stand a 4×4 post in each hole and check again for square. Plumb the posts with a level. Stand each post in its hole and pour dry concrete premix into the hole around it. Tamp the premix down to pack it around the post.
