Technically, you need to wait the 28 days to achieve the full value of the expansion bolt or sleeve anchor, but at 7 days the concrete should be a 1/4 of it's compressive strength, 14 days 1/2 and so on. If you crank down on these, concrete will spall and you will have zero value on that fastener. I have done the testing on these many times, let that concrete achieve some strength first, just enough to avoid spalling. Given it's a sill plate, would seem you'll have a lot of pull out forces, but would be nice to know you have the fastener value needed for the load, given it is what holds the framing to the foundation.
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Today's Featured Article - Two-Brush Generators - by Chris Pratt. Whether for product liability or because the aftermarket parts and labor business is lucrative, this concept is disturbingly prevalent. Fortunately when you step into your shop and make that jump 50 years back in time to work with your old tractor, this concept goes out the window. Even so, when it comes to the charging system, people quickly revert to this idea and start replacing the major components one at a time until it works. The reason you don't find any decals in your replacement set wit
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