×
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!

*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

Concrete pier under sea water

Concrete pier under sea water

Concrete pier under sea water

(OP)
I would like to see if anybody can give me some reference to desig a footing and foundation in a building which its foundation under the sea water. I am thinking a round pier and wrapped with some kind of material like PVC.

RE: Concrete pier under sea water

Concrete is resistant to sea water. Coastal bridge piers are designed and constructed without special protection.
Check my website, link below, and download "Concrete in Sea Water" on the out-of-print Portland Cement Association page.

www.SlideRuleEra.net

RE: Concrete pier under sea water

As additional information to the reply frm SlideRuleEra:

Concrete in Sea Water? Then you have to consider the potential of corrosion by chloride content in sea water (for the reinforcement)! In general you have to take a concrete with higher strength category.

wrapping the concrete with PVC is not sufficent because the conjunction of PVC and concrete is a problem.

Regards
Bartz

RE: Concrete pier under sea water

Is this pier and footing going to be cast in place, or precast? It will not be so easy to construct this to a good standard. Could you drive a concrete precast pile and then form a pile cap abobe the water level.

RE: Concrete pier under sea water

If you are going to buid a traditional foundation, you can do that with concrete. Many such structures have been built and have worked very well. However, the foundation must be built in the dry. This ussually done inside a sheet pile cofferdam. Often underwater (tremie)concrete is used to seal the dam, but it is not used as a structural element in the foundation. Although the concrete can be used as a bearing surface for the final structure. This type of construction can be quite expensive and thus the piles mentioned by Zambo are often a good option.

RE: Concrete pier under sea water

You can pour under water using Fabriform Nylon bags. They are  used for bases of bridge foundations. Bags are relatively cheap easy to use and can be placed over an uneven base like  a rock and will fill to give you a flat foundation to build your piers on. You can also insert rebar into the bag,(epoxy coated rebar]to provide a connection to your vertical supports. It is also possible to provide a fabriform pile jacket forms  for your vertical piers supports.

David Ritchie, Intrusion Prepakt

Intrusion Prepakt
www.marineconcrete.com

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! Already a Member? Login



News


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:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close