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.
Also, avoid skidding things on the driveway or dragging sharp objects on the driveway, since they can still scar the surface. After 30 Days â When 30 days have passed, your new concrete will have developed almost all the hardness and strength it will have, and you can use it in any normal way. You should avoid allowing heavy trucks, like garbage trucks or moving vans, on your residential driveway.