Contact US

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

What Causes This Type of Crack?

What Causes This Type of Crack?

What Causes This Type of Crack?

The enclosed pictures show the lower edge of a pile-supported slab. Along part of the edge, the lower corner is showing a horizontal crack. What might cause this type of cracking? Corner reinforcement too close to the corner? Wet soil providing too much of a temperature gradient for the concrete as it cures?

Would love to hear the expert's thoughts...


-5^2 = -25 winky smile


RE: What Causes This Type of Crack?

I'll go with too early form removal. There are some black dots, likely holes, below the crack. Likely some projections like nail heads, inside the form.

RE: What Causes This Type of Crack?

Did the formwork move slightly after final filling when the concrete was curing, but still green?

Is there a bulge in the footing or is that an optical / camera error. What does it look like in line?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: What Causes This Type of Crack?

What is the extent of the cracks going into the cap? Have you broken out a damaged bit to find out if it is limited to the corner alone? Is this only occurring in the wet soil?

--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."

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


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