New Concrete Slab....

[the1andonly]

New to the forum and this is my first post for you all, I installed a 2 post car lift on the side of my shop. I poured 2 footings (1 for each post) just to get the lift off the ground and operational this last November, just this weekend i finally poured the slab under the lift (30'x26'). My question for you guys is when do tou think i can drive my car on the slab and use the lift? The concrete I used was a 3000psi 1" minus mix. Attached are pics of the lift before the slab, i will post pics of the new slab later on this evening (sorry for the crummy pics, their from my phone).

 

[karsty]

Concrete generally gains ~70% of it's design strength within the first 7 days. So after 1 week you should be ok to drive on it. However, your concrete design strength is only 20.68Mpa (3000psi) which is rather low IMHO, especially if you're driving trucks on it, like you probably will be according to your pictures. I would have went with a minimum of 30Mpa (4351psi).

 

[Daniel Dudley]

Keep it wet for three days.

 

[the1andonly]

here's the new slab.... can't wait to get my car up on the thing....

 

[karsty]

Looks great! Wouldnt you want to have that lift protected from the elements somehow?

 

[the1andonly]

yea i hear ya, one thing at a time, we'll see what the Southern California sun does to me in the next couple months out there with no shade...