Paver bases are a stylish addition to any outdoor home improvement project. When the proper materials are used, paver foundations are efficient, quick to construct, and simple to install. A paver base is made up of three levels: subgrade, subbase, and base. Each layer serves as a specific type of support and has a unique material composition. https://modutile.com/product/gravel-pavers-outdoor-basketball-court-base-24x24/