×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

# calculate landfill liner cover area

## 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

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!