01-29-2008, 10:03 PM
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#5
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Senior Member
Join Date: Aug 2006
Location: Castro Valley, CA
Posts: 4,159
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Quick building question.
Doug..
He wouldn't need to go with a 4" slab on top of it, a 2" slab with wire mesh for reinforcement would work just as well - a topping slab, just make sure you use at least a 3000 psi concrete mix. It would still be expensive (depending on where you live and the cost of concrete) but like the others said, anything you use won't be likely to damage your floor. Oil, gas, diesel, solvents will eat the bitumen in the asphault and can severely weaken it - would you want pot holes in your garage?
You will most probably require to get a building permit for the addition or expansion on your garage.
If you opt not to go with a topping slab, remember that during hot weather the asphault will soften and if you have a vehicle up on jackstands or even a motorcycle on a kickstand, that they will sink and/or fall over.
(I've been a construction special inspector for the last 21 yrs)..
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