SUBGRADE / BASE PREPARATION
Universal Services drives customer satisfaction through our commitment to quality. With concrete, nothing contributes more to the overall quality and longevity of the concrete than the subgrade / base preparation. In order to achieve high quality and long lasting results with concrete and asphalt, it is imperative that the subgrade/base preparation is accurate.
The subgrade is the native soil at the bottom of the foundation. The sub base is the layer of soil on top of the subgrade and the base is the layer of material on top of the subgrade and directly under the slab.