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calculate landfill liner cover area

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calculate landfill liner cover area

(OP)
I primarily utilize ACAD Civil 3D for my work.  Just starting to break into the civil / environmental engineering field and want to know how I can calculate the square footage of a final cover that our firm wants to place on an existing landfill that is full.  I can use ACAD to calculate the total volume of the landfill area, but not sure about using it to calculate SF on final cover.  If it is a soil or clay cap would it not be in cubic feet in lieu of square feet?

New to all of this ~ can anyone give any suggestions or advice?

RE: calculate landfill liner cover area

Get the area of the footprint, (square feet) and then use that and cap thickness to get cubic feet required.

Richard A. Cornelius, P.E.
WWW.amlinereast.com

RE: calculate landfill liner cover area

I'm not sure I exactly understand your question. If you're asking how to use the software to calculate area I don't know. If you're asking how these projects are usually packaged for bidding and construction I can tell you a bit. Landfill liners and covers are usually bid either as lump sum items or if unit price are specified as measured by plan area measure. And I know it sounds trivial but the sloped sections of a landfill or cover can add appreciably to the volume of liner or cover material required.

RE: calculate landfill liner cover area

We used to do a lot of landfill work and used a digital terrain modelling program called LSS which could calculate the difference in volume of two models....
- Model 1 is the uncapped but full landfill.
- Model 2 is the final levels following capping works

Subtract Model 1 from Model 2 and you have the volume of cover fill.

I'm not sure if ACAD 3D does the same thing though.

Hope this helps

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