PPI drugs can be both prescribed and purchased over the counter â in strengths that both cause the same level of damage to the kidneys. Researchers recommend PPIs should be avoided, especially when acid reflux or the like can easily be treated with kidney-safe H2 blockers.
Recommended thickness of concrete slabs. 1  Driveways: 6 - 8 inches (0.15 - 0.2 m). 2  Side walks, barn and granny floors: 5 - 6 inches (0.125 - 0.15 m). 3  Porches, Home garage floors: 4 - 5 inches (0.1 - 0.125 m).
If I still remember my American Concrete Institute (ACI) manual, a concrete can withstand a compressive stress of 2000 pounds of load per square inch. This is wahta they referred to as Class A concrete, with a mixture ratio of 1:2:3 of stone:gravel:cement mix.ow much weight can a 5 thick concrete slab withstand before it will crack? Update: It's a garage floor (standard 2-car) and my husband is planning on putting a milling machine or something like it in there.