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How thick should the layer of aggregate base under a standard concrete driveway be?

0-2 inches
10%
2-4 inches
43%
4-6 inches
43%
Not sure
3%
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Question: How thick should the layer of aggregate base under a standard concrete driveway be?
Top Answer (43% of 30 votes): 2-4 inches.

Answer: 4-6 inches
Explanation: The gravel base for a driveway should be a minimum of 4 inches deep. If heavier vehicles, such as large trucks, will use the driveway regularly, the gravel should be even deeper, up to 12 inches. Poor soil or a sloped driveway may also require deeper gravel. In general, the thicker the gravel base, the more weight the driveway will be able to handle without damage to the concrete. The gravel should be clean, free of sand or clay and fairly uniform in size and shape without any large stones. It should also compact easily and be evenly compacted before the concrete is poured to provide strength and stability. Recycled gravel is suitable for use beneath a concrete driveway as long as it is clean and uniform.
Colorado Concrete
Answer: 0-2 inches
Explanation: 2 inches tick
alvaradomasonry
Answer: 4-6 inches
Explanation: The base that the concrete is placed on should be compacted and is very important , as this is what supports the concrete.
Concrete services
ProMatcher
Answer: 2-4 inches
Explanation: This all depends on ground quality, drainage issues, etc,
Black Dirt Services LLC
Answer: 4-6 inches
Explanation: This is what code requires
h and h company
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