As you can see, there are lots of variables to answering the how long is hamburger meat good for question. Raw hamburger meat (ground beef) is much more perishable than other cuts of beef and will keep in the refrigerator for only 1 to 2 days. Cooked hamburger meat will keep 3 to 4 days in the refrigerator.
Re: Poured side walk/steps, how long to leave forms? I strip the forms 24 hours later, but am careful not to damage the new concrete. It will still be very soft and with crumble if you put too much force on the edges. Usually concrete will harden withing 30 days to the point where it is considered cured.
Oil based polyurethane takes longer to dry than water based poly. 1  24 hrs before you can walk on the floors. 2  Hours 24-48, you can walk on the floors with socks. Avoid shoes and bare feet. 3  48 hrs you can walk on it with shoes. 4  After 4 days, you can move furniture back on to the floors.