Benjamin
Member
How long would a concrete foundation wall need to cure before framing can begin on a 2 story SFR. Can't seem to find out a definite answer in the code book.
Thanks, Ben
Thanks, Ben
Well the temp during the pour was prob around 55 and it was poured 5 days agomark handler said:You won;t find a number in the code book.What is the temperature?
Most concrete reaches ultimate strength in 28 days but around here framing starts in three to five days, slab on grade
ICE said:If it gets broken, Shirley it was too soon. If not, well then Shirely it wasn't.
Why are you asking?Benjamin said:How long would a concrete foundation wall need to cure before framing can begin on a 2 story SFR. Can't seem to find out a definite answer in the code book.Thanks, Ben
Ok, to get the bold and underline to stop I had to start another post; lousy computer. While working as a construction inspector we had a specialist do "slump tests" when pouring concrete. Here is a good idea of what the requirements are; http://www.concrete.org/General/WTRF5.pdf . I'd love to do final core test on foundations and make them rip it out and start all over. When I first started plumbing; I was sent out one evening to do an underground (we called them roughs in those days, and above ground was called a top out; but I digress). Anyway, they were wanting to pour that evening and helped me back fill so they could start. The next morning I was sent to the same address to do a rough (top out). When I got there about 10 am the frame was complete and the roof was on. You good ole boy builders and contractors are causing numerous problems for new homes by not learning from knowledgeable sources; instead of "well that's we always did it, and we never had a problem". Sure your long gone when the building starts to shift and the slab cracks and breaks up because you don't know or adhere to the requirements. Us inspectors are no better; because even if we know we can't do anything about it. The builders run the show or they would have to wait for the foundation to fully cure. I'd love to require a core sample at 28 days and watch these clowns rip the whole thing down. Also note that R402.2 requires (excerpt) "Materials used to produce concrete and testing thereof shall comply with the applicable standards listed in Chapter 3 of ACI 318". Uncle BobUncle Bob said:Mark is correct on the 28 days. I didn't learn that doing building inspections; but while working as a construction inspector (roads, municipal water and sewer lines). However, it is in the codes; 2009 IRC, Table R402.2, a. Strength at 28 days.
Same here and did that myself many times. Of course it depends on what it was that was formed up but if you hit when it's still green, you can get all the wood out and clean the concrete from the forms without too much work.jar546 said:I have seen them strip the forms the same day, within just a few hours.