Does anyone of any suggestions or information regarding the use of pea gravel beneath interior floor slabs? Recently, a local builder used pea gravel up to 6 inches in thickness above the vapor retarder and under a post-tensioned slab. The builder used the increased pea gravel thickness to help re-establish grade due to winter construction conditions. The local builder believes the pea gravel to be "self-compacting" which is not correct.
Thanks for your help.
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