I've been drafting a house for a couple years now and through many iterations I discovered one of the biggest flaws in how I was drafting was in not knowing what I would be building the house out of.
After looking up the differences between Concrete and Lumber construction I settled on the idea of drafting a concrete house. I found some nice ICF designs and have since been designing the house with ICFs in mind. However, recently I've been doubting the information I've been given. See I keep getting conflicting information on how thick ICFs should be.
How thick should an ICF Exterior and Interior Wall be in my drafting document?
Bonus: What parts take up what amount of space? How thick is the Core Concrete, insulation, etc.? And what tolerances should I have for drywall to go over the walls?