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.
A concrete driveway takes 24 to 48 hours to dry. Walking on the driveway without damaging the concrete is possible after this time. Even though concrete is solid after two days, there are still time limits on what the driveway can handle. Continue Reading.