This compression system is a very handy invention, especially for Web users, because it lets you reduce the overall number of bits and bytes in a file so it can be transmitted faster over slower Internet connections, or take up less space on a disk.
Concrete hardens to 600PSI (Minimum) after 24 hours. This means that 5 three grown men could all stand on a pogo stick (if that were possible) who's base covers 1 square inch without harming the concrete. You walking with shoes on exert about 10 PSI, well below anything that could damage the new pour.
1 Do not drive on the concrete for the first 7 days. Leave the warning tape in place to let delivery vehicles and others know that they need to stay off your concrete.  After One Week â After 7 days, itâs OK to drive on your new concrete with normal passenger vehicles.