×
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

Moment slab on Sheet Pile wall

Moment slab on Sheet Pile wall

Moment slab on Sheet Pile wall

(OP)
Does anyone have a design example or other reference for for a concrete traffic barrier/moment slab atop a sheet pile wall resisting live load impact? The concept would be similar to a barrier mounted on top of an MSE wall.

I am looking to be able to assess stability of the barrier/slab and correctly transfer the impact forces into the sheet pile.

Thanks.

RE: Moment slab on Sheet Pile wall

Check AASHTO.  It gives a vehicle impact load (I think it's 10 kips) acting at the top of the Jersey Barrier (about 2'-8" above the roadway).  AASHTO lets you distribute the load over 5 LF of wall.  Therefore, you have a load (10 kips) , a distribution (2 klf), and a location.  Add it to your sheeting design.

RE: Moment slab on Sheet Pile wall

(OP)
PEinc,

Thanks for the reply. I'm familiar with the AASHTO requirements, but I thought there might me something more to a moment slab/barrier system. Is it feasible to assume that there is some resistance to the horizontal force by friction between the slab and the subgrade?

RE: Moment slab on Sheet Pile wall

I have designed cantilevered and tiedback soldier beam walls where I mounted the barrier on top of the soldier beams.  There was no moment slab.  The barrier and sheeting wall became one.  If you have a moment slab, I would think that the wall would need to be designed for the horizontal force due to the moment slab sliding against the wall but that the wall would not need to be designed for moment due to the barrier trying to overturn.  Agree?

Friction would help prevent the moment slab from sliding but that force would push on the dirt which would push on the wall (as I said above).

RE: Moment slab on Sheet Pile wall

(OP)
Sounds good.  I'll proceed in that vein.  Thanks very much for your help.

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