These sound blocks are weighty. Lighter, hollow blocks can be obtained, but they could’t be split mainly because reducing them will expose the voids. Also, some hollow blocks need specific backfilling, which can be time consuming. These execs prefer Versa-Lok blocks, which might be held along with pins rather than https://overflowlabs28494.thenerdsblog.com/36710066/the-5-second-trick-for-sandstone-retaining-wall-blocks