In theory, the wall corners would have the most movement, especially if the corner braces eased up a little! Now in a basement, there may not be a window or door to work toward, so then the issue is to have the cuts fall in an area where there is no bracing!

I don't see any outside corner braces? Although I learned with corner braces, many mfg insist that that corners won't move. Maybe I'm a little to assertive during the pour? That is why I like corner braces!

Most manufacturers do not want you to cut the corner blocks, they actually tout keeping stack joints as far from corners as possible since they get the most pressure during the pour, concrete hits then rolls the corner. If I am on a long wall, greater than 20' than that is where I put the stack joint this allows the wall including the rebar to be completed and depending on the size of the project and the number of workers you have every keeps rolling without having to wait for someone else to catch up. The idea of putting the cuts above and below the windows/doors is good and allows for less cutting but you have to keep an eye on the accuracy of the cuts as the wall can grow or shrink if not careful (Not too long ago there was a thread that dealt with this problem). Stack joints are normal in ICF construction, I consider it normal, very rarely do Architects take the block size in account when designing and we ending up cutting to meet the drawings demand. You also have to consider that with the various outside dimensions from the different block companies this can play havoc on finished dimensions. I used to notice most Architects just drew walls @ 12" thick for 6" ICF core, occasionally I will get one that actually calls for the proper size just so they can make it as perfect as possible, but heaven forbid if I ask for a wall length be adjusted to make the block fit, I hear that the rooms will be off and this changes and that changes, so I no longer bother and just build with what's spec'd and to the dimensions provided.

Chris

I remember the first computer engineered building we work on. It had every stud and joist numbered for there location. After all was said and done another truck load of lumber was ordered. This program looks quite slick.  But why figure so tightly  it will bite you in the . Order a few extra forms, use them efficiently and take what is left over back to your yard. We poured a Habitat basement last week and they wasted 1 form . I took the parts home and will use them next time.

The real concern with the pour that you showed is . it will only take about 1 hour to pour and viberate. A lot of push at the corners real quick.

Eldon Howe