Will my garage floor hold a motorhome ?help

myredracer wrote:

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... :)

IF you had read the OP's post which states "Ok my pole barn has a 4” slab, 4000 psi concrete with fiber and wire mesh,,,it compacted bankrun gravel and crusher under it..." you would realize that your reply is non-responsive.

To put it in the simplest terms possible. if the RV weighs 30.000# and has 6 tires on the ground that equates to 5,000# per tire +/-. The 100# air pressure (assumed) in the tire pushes on all interior surfaces of the tire including the tread area. That would result in a contact patch of approximately 50 square inches. The tread which is hopefully connected to the interior of the tire resists the 100# load exerted on every square inch of contact patch with an EQUAL 100# per square inch resistance per Newtons Third Law.

50 square inches of 4,000# concrete has an ultimate load of 200,000#.

F=ma? Lets hope his floor is not accelerating.

QED