Two post lifts and Control joints?

[dichdoc]

Looking for a two post lift and am struggling with what size I can get. I have two control joints in the concrete floor (4" thick 4000psi) they are 154.5" apart spaced evenly off the center of the bay. My problem is I think I want the wider lifts (bendpak) which are 145" wide leaving 4.75" from the control joint not the Needed 6". Will I suffer with 13" less drive through distance. Or do I compromise and go with a Direct Lift which says it has a 95 8/8" drive through width vs. 89" on the bendpak??? Travis

 

[t. jones]

Unless you only work on small cars go for the extra width. I went to a lot of trouble in my build to get max drivethru.
Thanx Trevor

 

[dichdoc]

I've got mostly fullsize vehicles (Chevy Crew Cab Diesel, Yukon) How would I go about installing the wider lift with the control joints that close?

 

[t. jones]

Mount hoist on steel plate, cut floor add more concrete. I wouldn't even worry about the control joints as long as the floor is solid. Is there rebar in the floor?
Thanx Trevor

 

[dichdoc]

Floor was poored in September there is plenty of rebar. The control joints are 1/2" deep. I remeasured today and I'm at 5 1/2" from the joint. I'm SOOOO close. Most of them only call for 3000 PSI concrete and I'm at 4,000. Just go for it????

 

[mx5.7]

Personally I wouldn't sweat it since it is reinforced concrete.
All concrete cracks, control joints just make the cracks look pretty.

 

[pattenp]

You should not mount any closer than 6" to any crack, edge or expansion joint. You are confusing a trowled grove to control cracks with an expansion joint, they're not the same thing. You're ok as long as what you have is not a true expansion joint which goes through the entire depth of the concrete.

 

[t. jones]

What pattenp said is what I thought. Thanx Trevor

 

[dichdoc]

Not a troweled joint, it's a 1/2" deep saw cut. So I'm OK to mount 5 1/2" away from this??? Travis

 

[pattenp]

Not a troweled joint, it's a 1/2" deep saw cut. So I'm OK to mount 5 1/2" away from this??? Travis

I don't think it makes any difference if the grove was troweled in before the concrete was set vs. cut later seeing that it's only a 1/2" deep. I believe you're fine with placing anchor bolts 5 1/2" from the cut.