Will my garage floor hold a motorhome ?help

joshuajim wrote:

myredracer wrote:

Cummins12V98 wrote:

joshuajim wrote:
The concrete is 4000 PSI, your tires exert approx 100 PSI. Do the math.

HUH???

Double huh. Sorry, but that's a mega-OMG...

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

No Huh about it.

So you can spread a layer of 4000 psi concrete on your lawn and you'd be okay? The native soil, fill material, compaction, reinforcing and correct placement procedure of concrete aren't factors? How does tire pressure relate to live load and concrete strength?

And FWIW, F=ma... :)

myredracer wrote:

Cummins12V98 wrote:

joshuajim wrote:
The concrete is 4000 PSI, your tires exert approx 100 PSI. Do the math.

HUH???

Double huh. Sorry, but that's a mega-OMG...

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

No Huh about it.

Cummins12V98 wrote:

joshuajim wrote:
The concrete is 4000 PSI, your tires exert approx 100 PSI. Do the math.

HUH???

Double huh. Sorry, but that's a mega-OMG...

joshuajim wrote:
The concrete is 4000 PSI, your tires exert approx 100 PSI. Do the math.

HUH???

The concrete is 4000 PSI, your tires exert approx 100 PSI. Do the math.

"compacted bankrun gravel and crusher under it"

^^^^^ This is the key to the concrete supporting even a Class A Motorhome with 4" of concrete.

bid_time wrote:
It's not the compressive strength you need to worry about, it's the flexural strength and bearing strength below the slab. Then add in W/C ratio, expansive soils, improper curing, segregation, air content, inadequate compaction, etc. Long and short of it, there is no one here that knows the answer but it sounds like you did everything right; If the installer held up his end you should be ok.

And the bottom line is that it's guaranteed to crack (eventually). I place slab just like you've stated, wire and fiber added to 4K psi. I also use rod if I sense a problem with the fill. Rods tend to keep everything together longer. No one has reported any problems. For a big truck, bus, or RV, I would place it with 5" depth. That doesn't void that original warranty, either.

Good luck with your Class C and the slab, you shouldn't have any probs.

Not sure, how thick are they ?? And I’m sure they are not on 4 ft of fill

Look at the parking pads at any campground. Do you think they are any better?

As a licensed general contractor....I say you're OK. This is not ever something I'd even consider worrying about.