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whaas_5a

Concrete Patio Base

whaas_5a
12 years ago

I don't think this is the right forum but thought I ask in case anyone has any experience with this.

Most sources recommend 4" of compacted gravel for a concrete patio base. I've seen recommendations up to 12", which is certainly overkill.

I have a friend that is pouring a concrete patio as a side job for me. He does this for a living so I trust his experitise. However I checked the base he put in and its only 1" of compacted gravel.

Before I say anything I wanted to get some opinions about the situation.

The house was cut into a slope so this soil under the gravel base is a sandly clay like soil with alot of rock. Figure I share that as it may impact the required depth of crushed gravel.