×
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

Foundation Encasement

Foundation Encasement

Foundation Encasement

(OP)
I have an issue with an existing tower built in the 70's.  The foundation has some severe spalling (don't know if thats a good word, but its what we call it around here...i.e. flaking deterioration of the concrete) likely due to poor air content in the mix.  I have cored the foundations and discovered they strength is adequate, but I must do something to mitigate the weather deterioration. I have read about concrete foundation encasement.  I am trying to find a spec or some general guidelines.  Its a concrete footing that gets wider as you go deeper so more embedment means a wider diameter form around the foundation.  I'm trying to reduce the size of the encasement as much as possible so I'd rather not go very deep.  How deep below grade do I need to go?  Please direct me to some references I am at a loss as to where to look.
Forgive me if this belongs in another forum.

RE: Foundation Encasement

If what you are talking about is strictly above ground and you are simply worried about the appearance then build a simple form around the exposed area and pour a cap.  You can drill the existing concrete and insert rebar pegs to help the cap adhere to the existing concrete.

If there is a problem with the actual foundation below grade where the actual foundation load is occuring then you have a different problem.  If this problem extends to areas that are not effected by weather, i.e. below grade the entire mix is suspect.

RE: Foundation Encasement

http://www.balvac.com/project_profiles.asp

I have performed repairs using the above company/product. I would recommend giving them a call. A microwave tower with poor air entrained concrete foundations (vintage -1960) in Niagara Falls, NY was repaired with this method. Of course, the company was only 10 miles from the job site. So, this may not be a cost effective suggestion. I agree with the post above, if you want to go with simple methods.

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