roadway over Landfill

[kechha2060]

Does anyone have any experience on designing/constructing roadway on top of landfill area. We are considering an asphalt pavement (8" thick 'no basis') knowing issue of maintenance.

 

[Caspercat1]

Would other factors be present such as possibility of flooding? Extreme temperature differentials? How soon must construction begin?

 

[charnott]

dont forget to locate the landfill high wall particularly if the landfill records are questionable for any reason. a series of geophysical survey transects perpendicular to the anticipated location of the high wall will do the trick and provided the correct methodology is selected will enable a profile of not only the high wall position but the inside slope and/or batters of the filled area.

 

[beej67]

Aerobic bioreactor landfills are relatively new tech, and I'm not sure it's easy to retrofit an existing landfill with them - you may need to have planned it from the ground up. Wikipedia has a brief entry, and lists some examples. Maybe call one of them up.

http://en.wikipedia.org/wiki/Bioreactor_landfill#Implementation_of_bioreactor_landfills

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -

http://www.campbellcivil.com

 

[hokie66]

Geogrid, granular pavement, maybe a PSP surface? That way you could take it up and relevel periodically.

 

[Riversidean]

Why are you building an Asphalt Road on top of a landfill? Is it to dump trash? Are you worried about weather causing mud and possible sticking issues?

Working at a public landfill department Asphalt Concrete does alright unless major settlement occurs. Especially since Asphalt Concrete is flexible to a degree anyways.

At the department I work at we typically only use asphalt concrete for customer roads steeper than 9%. Anything less we typically use will a purely aggregate base road leading up to our wet weather pad. If the weather is nice and the soil is not muddy we send our traffic to our active dumping pad which only has dirt roads. If you do this make sure you have a rumble rack at the exit to the landfill so as to clean the customer tires before they exit the landfill less you want public roads getting track out on them.

 

[oldestguy]

I see your question relates to those with experience on this subject. From what I can glean from those above, it would appear that Ron is the most experienced. I'd go with his advice. I have seen many a landfill operation, but have not designed the pavements for the access roads. In most cases they were done by the usual local municipal standards and served well. Any major settlements easily corrected.