I meant to say by a factor of 2. The hypothetical designer described earlier who knew what he was doing would supposedly refuse to allow an 8 PSI load to be placed on a footing with a 3 day load capacity of at least 1. PSI and possibly 2,5. PSI. I wont characterize that earlier claim since it speaks for itself. Since typical modern specifications call for 3,5. PSI concrete, normally the strength after 3 days would be close to the minimum required by the IRC 2,5. PSI. As far as respectable architects are concerned, I have linked my grad school textbook as evidence of my training in this subject, although I would normally defer to an engineer in professional practice. The subject at hand is briefly discussed on page 5. Of course, my book was a much older edition. Find Cpu Serial Number Linux Kernel. As for concrete being cured after 2. It is important to understand that curing is an optional construction procedure rather than a physical state to be achieved. The use of phrases like the concrete is cured is shortspeak indicating that the desired period of moisture control is over. The design strength is just one of many variables considered in the selection of a curing method and time period. I once had a bad batch of concrete poured in the mat foundation of a large hospital addition. Unfortunately, it was an all day pour so it threatened to delay the project. In a big meeting of all the involved parties the concrete testing engineer announced that there was enough fly ash in the mix that steam curing might bring it up to the design specification. I had done an existing conditions survey of the adjacent buildings as part of the architectural design process and told them there was an unused steam line immediately adjacent to the bad pour. People flew out of the trailer to tent and steam the concrete mat. When the test results came in the ready mix owner was so choked up he couldnt speak. Now there is someone who is unlikely to bad mouth engineers and architects. FoundationCrack460DJF.jpg' alt='How To Avoid Concrete Cracking Normal' title='How To Avoid Concrete Cracking Normal' />ArtCon frequently asked questions about las vegas concrete stain, concrete stamping, and pavers. A Discussion on Curing and Sealing By Hank Hauge. There is much discussion in our industry about curing and sealing concrete placements. Unfortunately, it is common. Concrete Repair Systems 60 SONOCRETE KURENSEAL WB Waterborneacrylic transparentcuring,sealing, anddustproofingcompound 3 03390 CONCRETE CURING. Vapor barriers a common way to prevent concrete moisture problems, but the type of barrier and where it should be installed are the subject of much debate. Concrete crack repairs Recommended methods for sealing cracks in concrete floors slabs How to seal control joint expansion joint cracks in concrete slabs List. Here is a link that might be useful Concrete design textbook.