Yes, Bobert. that's correct. Three vertical (wooden) I-beam supports, one horizontal. It will gives us much more workable space in the basement. If we'd had the company-built floor wedges, there would have been many more footers and supports in the basement. We liked the circles of supports in the place we visited (and made some music banging on the resonant supports, too!), but that design is only needed for the prefab floor sections. We're having the floor built on site, so we can use this support system and a plywood subfloor.

This link tells more about the ICF blocks. Bobert, you already have this one. http://www.toolbase.org/Technology-Inventory/walls/Insulating-Concrete-Forms