Sloping the bottom of a Containment Berm

[nathan_westhoff]

Hi all,

I am trying to create a containment berm 4' deep with 3:1 side slopes on the berm with the exterior of the berm 3:1 grade to EG surface. The berm will also have a 15' wide top. That part is easy enough to create. What I am having trouble with is that the bottom of the containment berm needs to be sloped to a catch basin at one end of the containment berm so water will drain. Bottom slope needs to be slope to the corner of the berm. I can force this to happen by creating feature lines with 1% grades to the corner and infilling between them when grading.

I am just curious if this is best practice or if there is a much easier way to do this.

Any input would be helpful!

Thanks

[Neilw_05]

Typically I will create a "pan" surface with the desired slope and flow lines as a temporary construction surface. Then I target that surface with the berm gradings to get a perfect seam at the berm slope.

[nathan_westhoff]

That worked, so then you just create an infill to mimic the bottom surface once that has been deleted?

What if I wanted something similar to this (attached) were the slope did not dictate where the toe of the berm was, but the catch basin did?Thanks ahead of time.

[nathan_westhoff]

Here is the attachement, didnt work first time

[Neilw_05 · Accepted solution]

Yes you can add an infill to complete the pond grading. You can add a circular feature line within the pond bottom to form a low point for the catch basin.

[nathan_westhoff]

Thanks for the help!