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Load capacity of garage pad

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Subject Author Date
Load capacity of garage pad Anthony R 09-05-2006
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Posted by Anthony R on September 5, 2006, 12:40 pm
I had a garage pad poured a few months ago, and now it is time for me to get
topsoil delivered. I'm wondering if the dump truck will be too heavy for my
garage pad. It is a 6 inch slab, rebar reinforced, with a healthy layer of
supporting gravel underneith. Any guesses?




Posted by chuckster on September 5, 2006, 3:35 pm
Too many unknowns for a good answer. Weight of truck, size and spacing
of rebar, test of concrete, how well did you compact the stone and soil
prior to pouring. I guess if you "did the job right" and back filled
around the slab, nothing would happen if you used a small truck with a
10 ton load and if this slab cured for a minimum of 60 days. Place some
3/4'" plywood on the slab for the truck to drive on and the load will
be disbursed. Why do you have to drive on the slab? Why not just go
around it? Dump it and move it with a machine.



Anthony R wrote:
> I had a garage pad poured a few months ago, and now it is time for me to get
> topsoil delivered. I'm wondering if the dump truck will be too heavy for my
> garage pad. It is a 6 inch slab, rebar reinforced, with a healthy layer of
> supporting gravel underneith. Any guesses?


Posted by Italian Mason on September 5, 2006, 11:25 pm
> with a healthy layer of supporting gravel underneith.
gravel under concrete is never healthy......why...... gravel doesnot
compact....a baserock mixture sand & gravel is what should be used..and
may be what you have.
aside form that its not somuch the thickness of the pad as it is the
edges that the truck is to drive up on. if the driveway is in place and
it has an aproach and we are not talking about a transfer truck or a
10 wheeler you should be fine. but if this is the case how are you
going to move all this dirt? if you are going to use a tractor...there
goes your new garage floor...to be safest I would avoid it all
together....



Anthony R wrote:
> I had a garage pad poured a few months ago, and now it is time for me to get
> topsoil delivered. I'm wondering if the dump truck will be too heavy for my
> garage pad. It is a 6 inch slab, rebar reinforced, with a healthy layer of
> supporting gravel underneith. Any guesses?


Posted by Andrew Duane on September 6, 2006, 1:59 pm
I have a very similar slab, and (despite my fingernail chewing) it
easily supported a 20 ton truck that delivered 8 yards of gravel across
it. The delivery truck driver said the key is to make sure the ground
at the entrance to the pad is level with the pad. Even a 1/2" to 1" lip
will put a LOT of stress right there.

Anthony R wrote:
> I had a garage pad poured a few months ago, and now it is time for me to get
> topsoil delivered. I'm wondering if the dump truck will be too heavy for my
> garage pad. It is a 6 inch slab, rebar reinforced, with a healthy layer of
> supporting gravel underneith. Any guesses?


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