Dumpsters for concrete and dirt projects use either a 10- or 20-yard dumpster. The reason behind this is because both concrete and dirt are very dense. The Department of Transportation regulates the maximum amount of weight that can be transported safely. Due to this regulation, dumpsters used for concrete or dirt should only be filled half way. Please specify if you need a dumpster for either of these, so we can provide the appropriate configuration for your project.