My background is structural so please forgive the elementary nature of my question. Our contractor is looking to place gravel at 6" deep for a parking lot and 12” for an equipment laydown area. I assume these areas of gravel must be compacted. How much height will be lost due to compaction for both of these? When someone specifies a gravel depth (6” or 12” in this case) is it typically the uncompacted or compacted height? I imagine specifying a compacted or final height makes it difficult know exactly how much gravel depth should initially be placed.
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