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Is concrete at 2500 psi adequate for garage floor & driveway?
I got a quote from a concrete contractor who is proposing to pour 2500 psi concrete to form my garage floor and driveway (about 1,000 sq. ft. total combined area). My question, is 2500 psi strong enough or should I request a stronger grade? They're planning to add rebar for added strength.
The quotes were based on 4" thickness (seems to be the typical for So. Calif.) just parking two sedans, no extra heavy vehicle types. garage floor is 21' x 20', and driveway is 21' x 30'. I received quotes ranging from $6 to $8. so 2,500 psi is adequate?
Answer:
In Texas, we specify 3,000 psi concrete for residential driveways and slabs. The typical thickness is 4 inches unless the homeowner wants something thicker. The cost between 2,500 & 3,000 concrete should be minimal since the design mix is only altered by some additional cement to the mixture.
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