Our experts will assess your requirements, recommend a properly sized container and create an estimate that includes all fees and taxes. We’ve included common dumpster dimensions for each of these containers below. A 20 garden dumpster needs space measuring about 22 ft. x 8 ft. How much can a 10 garden dumpster hold? Usually the largest size a dumpster prenatal company will carry, this dumpster holds 40 cubic yards of waste. This waste is biodegradable waste. Includes delivery, 7-day rental, and pick up. Includes delivery, 7-day rental, and pick up.