2" is ground rock used as a base layer for projects. We do not manufacture 3” Minus and recommend 2” minus. We find that the 2” minus is much easier to work with and grade. Often the base layer will remain through a construction project without fine gravel on the surface, which offers a better driving surface for temporary traffic. Some contractors offer a 3” minus or call it a Granular B Type II. This material will perform the same, but is more difficult to grade and the driving surface is not as desirable as a 2” minus. Although we do manufacture 4” minus, we use 2” minus ourselves 99% of the time when constructing a base layer, and we recommend the same.
In addition to general site filling and grading, sand fill is utilized in the following areas of site construction:
Sand is a requirement in the construction of the side slopes and mantle treatment areas for a septic system. The round particles allow for biological treatment of effluent for release into the natural environment. A relatively low silt, harp quality sand is critical.
Sharp sand is a great product for backfill. If an area is going to receive a hard surface, such as a patio, ensure it is compacted evenly as it is installed.
Sand is less susceptible to frost over that of clear stone products. Sand provides better insulation qualities.
Sand Fill can be used as a road base. In areas of deep fill requirements, sand can be a more economical choice. (For average depth fill requirements for driveways, we find 2” minus is a far superior performing product and requires less overall depth of material. The reduced volume of 2” minus requirement over that of sand in an average fill depth situation cancels out the cost savings of sand.)