Re: Try
I have two Rotary brand symetrical twin post lifts. They are anchored to the floor with 6 5 1/2" anchor bolts per side. The instructions say to use 3,000# concrete mix for the floor. (I poured 5,000#) 4" was the minimum thickness required. I have lifted in excess of 9,000# on both of them at one time or another. Sometimes a car will stay raised for 30 days. I have regularly watched the mounting for movement but have seen none.
I have two Rotary brand symetrical twin post lifts. They are anchored to the floor with 6 5 1/2" anchor bolts per side. The instructions say to use 3,000# concrete mix for the floor. (I poured 5,000#) 4" was the minimum thickness required. I have lifted in excess of 9,000# on both of them at one time or another. Sometimes a car will stay raised for 30 days. I have regularly watched the mounting for movement but have seen none.
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