Garage Floor Loading

[zendriver]

Maybe a non issue, just checking.

I have a fairly new (under 10 years) 3 car garage. It has a nice slab concrete floor, that I could assume built appropriate, since the PO was a concrete contractor.

Issue is the only way I can get any vehicle into the back yard, is to go through the garage out an overhead door on the backside. I have an old Ford backhoe that I should be able to drop the boom and go through. I believe the unit weighs about 12,000# total

Should the floor be fine, if it was built to normal standards for a concrete garage floor? I would also like to eventually carry a load in the bucket, for projects.

Thanks

 

[Toomanytools?]

I think 4" is usually good for 8000lbs easy. On the low end concrete would be 2500# PSI, most sidewalk/driveway is 3000psi in my experience. So if your rig is 50/50 weight distribution (which is doubtful) that would be about 3000 pounds at each tire. The tire contact patch would spread that out. Really depends on the floor thickness and any added rebar. I think you would be safe as a backhoe would spread that load out. The spots to watch are entering and leaving edges.

 

[juddspaintballs]

Probably not an issue at all, but if you drove it over 2x10's you'd spread the load out much better and be plenty safe.

 

[ConCretin]

The issue won't be the compressive strength of the concrete, it's the thickness of the concrete and the strength of the soils supporting the slab. 12k pounds shouldn't be a problem if reasonably good construction practices were followed. There is only one way to find out......

 

[TRIGGER]

You will be fine everywhere but the edge. When going from concrete to dirt you could break the edge. Put some boards down in the dirt/grass so your tires are climbing the boards slightly as they leave the concrete. We do this with 80k lb concrete trucks if the situation arises. I have had a 12k lb safe setting on 2-4x4s in my garage for the past 5 years with no issues.

 

[rburke65]

No....you won’t find out until ya do it.

 

[Zippercat]

Contact the prior owner. If he’s a concrete contractor he certainly knows the specs for the floor.

 

[LutzTD]

my contractor for the garage put gravel at the edges of the driveway and overlapped 3/4 plywood for the load to drive on. for the first phase. no issues. the second time he came he was lazy and didnt put down the plywood and my driveway cracked.