These strong blocks are heavy. Lighter, hollow blocks are available, but they are able to’t be split for the reason that slicing them will expose the voids. Also, some hollow blocks need particular person backfilling, which is time-consuming. These pros prefer Versa-Lok blocks, which might be held together with pins https://floridasigepase51504.worldblogged.com/36980246/sandstone-quarry-an-overview