Im curious everyones opinion on cold joints in the walls. For example, if one wanted 14' walls, with another 18" or so needed below grade, thats a tall wall for a DIY to pour. Add a vaulted ceiling with ICF gables and it grows taller yet. And I dont think it could be vibrated that deep either. So, could you pour that wall in 2, or 3, separate pours? I heard a rumor once that green concrete, if less than a week old, would meld together with another pour on top. I don't think that's true however. But with sufficient variations in height and a rough edge, you could get enough of a mechanical bond between the layers I believe. Could you pour roughly 6 feet at a time and do this in 3 stages? Using a conveyer truck would save pump costs.

I do our cold joints as near a floor system as reasonable. As soon as the concrete sets in an hour or two, I don't see how there would be melding.

That's why you install rebar in concrete. Concrete always cracks, even if it's just micro fractures. A DIYer should never try a 14' pour. Most pros couldn't do it with an icf. In my long career I've only poured once with a conveyer and would never do it again. Much more control with a pump. Unless you are foolish enough to leave it one spot and fill the wall to the top, then move it again. Void city.

Agree with ICFConstruction. Cold joist should be placed at a point in the wall where additional lateral support is provided. Your ICF supplier will likely have specs on size/spacing of rebar at the cold joint. If required at the mid-point of a wall, engineering may be needed for this detail based on local code.