Pit Gravel, Pit Run Gravel, or Bank Stone is always a natural product, and varies greatly by locale. It is natural soil and gravel exactly as it is dug up, and it therefore contains every particle size that occurs in nature. Highway engineers specify Pit Gravel for their roadbuilding by defining a strict recipe of particle sizes, from stones as large as 8 inches round all the way down to fine silt. Our Pit Gravel typically contains no stones larger than 2 inches. It can be spread and compacted with hand tools for the do-it-yourselfer.
Residential customers and contractors do just fine with the natural product, using Pit Gravel for sub-layers under concrete building slabs, under swimming pools, under walkways and pavers, as backfill for house foundations, utility pipes and other excavation work. Unlike raw fill dirt, Pit Gravel packs hard to form a dense and solid sub-surface. A foot or more of Pit Gravel is often laid over soft spots or sandy areas before construction. Pit gravel drains well, is inexpensive and works extremely well for all these purposes.
Pit Gravel is not a top cover aggregate. Left uncovered, it will be dusty in dry weather, and it will track mud into the house in wet weather. It needs blacktop, pavers or poured concrete on top. It’s a sub-layer aggregate that’s cheap and effective for forming a compact base. It is not the right choice for gravel driveways or roads because it contains natural dirt, which can erode under moisture and traffic pressure. Crusher Run Gravel is a much better choice for these areas. Pit Gravel does better under waterproof top cover like blacktop, concrete or pavers.