Class 5 Gravel
Class 5 gravel is a common term used primarily in Minnesota and the Upper Midwest of the United States to denote a specific type of gravel used commonly in construction and building works. The name “Class 5” comes from the specifications set by the Minnesota Department of Transportation’s (MnDOT) grading requirements.
Class 5 gravel is typically a mix of rock, sand, and clay. It is a coarse aggregate, with the pieces of rock typically being less than 1″ in diameter. This type of gravel is typically brown or gray in color, and its composition can vary depending on the exact source of the gravel.
Some uses for Class 5 gravel:
Road Base: This is the most common use for Class 5 gravel. It’s used as a base layer for roads before asphalt or concrete is poured. It provides a stable foundation that can handle heavy loads.
Driveway Base: For the same reasons as road construction, Class 5 gravel is often used as a base material for driveways in residential and rural areas. It provides a stable, well-draining base that can support the weight of vehicles.
Parking Lots: Similarly, it can be used as a base layer for parking lots before a surface material is added.
Construction Sites: Class 5 gravel is used at construction sites for stabilization, providing a firm base for heavy equipment.
Utility Work: It can also be used as backfill around utility installations due to its compaction properties.
Landscaping: In some cases, Class 5 gravel may be used in landscaping for paths or as a decorative element.
The grading and specification system set by MnDOT uses a numerical classification, with Class 5 being one such category. This system ensures that materials meet certain quality and composition standards, so when a project requires Class 5 gravel, contractors know exactly what they’re getting.