2 post car lift fitting

[SEE YA]

Hello,
Advice please how thick does the cement have to be to fit the above to the floor?

Moving again soon will have space to fit one at last.

Thanks

[Leaky Valve Stem Seal]

http://lmgtfy.com/?q=2+post+car+lift+concrete+requ...

Should answer your question - I'd use reinforced concrete rather than cement though, cement is notoriously weak in tension...