Question from Newbie re: break in corner of poured concrete foundation

Nice one Randy.

Hi Randy,

The shape of the largest break looks very similar to your photo, however, our home does not have a concrete veneer. It is clapboard siding.

I also responded earlier to the inquiries about our basement water issues above. Again, not sure if it is related, but we have had ongoing damp basement issues. Details are in a previous post.

Lisa Randy is correct in his assumption of expansion.
The brick veneer would be more conclusive though.
The sill plate to the home will expand and the home ( residential building or unit ) will expand.

Just one of many assumptions and what I have observed.
I have seen poor building practices and techniques from many foundation installers.
It has to be finished when it stops bleeding, ( slang: the cream has come to the top and) or is thumb tight ) cured to perform a finish.
When you finish a foundation pour, you hand finish the sill landing or top of the wall with a bull float.
You try to make it as level as possible.
Easier with a string.
If you draw the concrete to the corners when doing your finish it may leave them higher than the rest of the plain.
The finisher must maintain level.
High spots will have excess loads placed on them.
Even the wrong bull float material can effect concrete.
Wood and magnesium are the preferred in Montreal.
Metal or steel will degrade the finish on exterior applications.
Air-entrained, and I can go on.

#1: not finished right.
Finished the concrete to the corners leaving them high.
#2" Expansion of the unit. Sill plate.
Proper finish for PDF.
Click on the PDF file.
I have seen many foundation installers make many mistakes.
Just ideas. Try to hypothesize on the problem.
Wood and expansion and contraction.
http://www.ehow.com/how-does_4742977_wood-expand-contract.html
Now add your humid foundation.
All the elements are given to you to draw a hypothesis.
#1: I will say to look into your land or property grading.
That would be my first step or recommendation, grading.
#2: My second recommendation is to see if your sill plate is flashed properly.
Is your siding flashed?
If there where brick, the expansion would be partial to my hypothesis.
Is the sill getting moisture.
I forgot where you live.
Is there a thaw and freeze cycle?
That can exaggerate a problem.
Good luck.:slight_smile: