×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*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.

Students Click Here

Jobs

Temporary Channel Liners

Temporary Channel Liners

Temporary Channel Liners

(OP)
We often specify a temporary channel liner in a swale to prevent erosion.  

Let's say that liner is a single-net straw blanket w/ a shear resistence of 1.55 psf.

Ideally, grass is going to grow in to replace the temporary liner.  However, grass can have a shear resistence as low as 0.6 psf.

The implication is that the channel may be bumped up to requiring a permenant liner because stabilized grass fails the shear condition.

How are people handling this?  Do you go with the permenant liner, or do you assume the channel will always and forever have the permissable shear value of the temporary liner?

RE: Temporary Channel Liners

In many cases where we have had channels erode in the past we go back and put in a liner.  Now we have a good feel for where they will be needed and we use North American Green design software, which is pretty helpful.  We do have some issues with a local long grow-in period.

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.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources