×
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

alternatives to RGRCP in street

alternatives to RGRCP in street

alternatives to RGRCP in street

(OP)
anybody used large diameter (72 - 90 inch) HDPE profile wall pipe?  How about cement mortar lined corrugated steel pipe in the same size range?  

Was it cost effective?

How has it performed?

Any issues with installation or constructability?

RE: alternatives to RGRCP in street

cvg,
We've generally used aluminum or aluminized steel on larger culverts and arches.

I haven't seen any cement mortar lined corrugated steel pipes, although we repaired some unlined corrugated steel pipes by pouring new concrete inverts (taking the necessary precautions to protect stream, etc.)

We have several older bitumious lined corrugated steel pipes which have done okay in general.  The bituminous lining may crack and delaminate in places, exposing the steel.

Generally we don't have much HDPE in the right of way.  I believe the largest is 48" dia. installed about 5-6 years ago.

Contractor oversight, backfill material, and compaction all would be even more critical with larger diameter HDPE.

RE: alternatives to RGRCP in street

Fresno Metropolitan Flood Control District uses lots of large-diameter cast-in-place concrete pipe. They have been quite successful with it. Paranoid me…I like my concrete reinforced, sidewalks excepted, but I have used it on their projects because that's what they do and it works.

Do a Google search on "cast-in-place concrete pipe" and you will find lots of info.

RE: alternatives to RGRCP in street

(OP)
yes, I plan to also look at cast in place concrete pipe.  However, as you know, it requires specific soil conditions to be feasible.  And around here, we are required to oversize if we are substituting cast in place to account for what is assumed to be less efficient hydraulic conditions.  Plus the wall thickness is greater than for RCP.  Our problem is that we are tight between an existing 24" waterline and a 12" high pressure gas line and need to look at options for constructability in this tight space.

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