Concrete is measured in psi "pounds per square inch". Mostdriveways and sidewalks are anywhere from 3,000-3,500 psi. A statejob would be 4,000 to 5,000 psi as they have different standardsthan your average contractor. Concrete itself can range anywherefrom 2,500 to 10,000 psi according to what it's being used for.