Parking Lot Paving Replacement?

[RobertM64]

I have a parking area for a building located in Ithaca that needs paving work. I have attached picture, I have several, but it seems like only one per post, so I will try to get a few more up. I believe the entire area should be demolished, new subbase and pavement applied, would the experts agree?

 

[RobertM64]

Another Pic.

 

[IRstuff]

You can simply copy the links to the files you uploaded and paste them directly into your posts.

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[eea]

The surface asphalt looks pretty bad, but I'd be curious on the aggregate base. The alligatored pavement will likely not be bridged with an overlay and the amount of faulting would lead me to shy away from a geo-mat / petro-mat. Take some cores &/or dig a few holes to verify the depth of aggregate base. If the lot hasn't been overloaded by traffic, the aggregate base has a good chance of still being free of soil migration into the rock. Elsewise you may have less thickness than you need. A full coreout is pretty disruptive and I'd make sure its warranted beforehand. I think taking that extra step with the client will help them understand the scope better and not just having someone shoot from the hip.

 

[dik]

'gator cracking is generally indicative of poor material underneath... adding a topping may just provide for new cracking.

Dik

 

[ACtrafficengr]

I don't see how the surface can be salvaged. Without some sort of subsurface exploration like eea said, you're just guessing. Maybe the subbase is fine, but the top was too thin. Maybe more trucks parked there than the designer anticipated. Maybe you need to go full depth, with geogrid or separation fabric. Without understanding the cause, your client will probably end up spending more than they need to, either due to premature failure or a thicker section than needed.

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