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Re: Slab on grade (on asphalt)

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Items to think about.
1.       What is the highest temp that the area in question will be subject to ? Asphalt will              creep/flow when  temp is right.
2.     What is the density of the asphalt ?
3.     Does the asphalt show signs of cracking now ?
4.     What is the underlining soil bearing capacity?

If these are determined to be acceptable I would still cut a perimeter 8" footing throught the asphalt  into the subgrade. this would confine the asphalt from horizontal movement .

Joe Venuti

Johnson & Nielsen Associates
Palm Springs,  CA