My parents built a very large basement home using the foam forms, and yes it takes a pumper truck to make the pour. My advice: Don't store the forms out in the sunshine while you are working on the project. The sunlight degrades the foam. It took so long for the work on my parents home, that the older sections of the foam had some blowouts during the pour (the foam broke and spilled concrete all over inside the house) One of the blowouts was on the bottom course when the wall was poured almost to the top. When all that concrete pours out of the wall, there is nothing you can do about it. After it all settles down, then they repaired the hole with plywood and started pouring the wall all over again. It also took a lot of lumber to re-inforce the corners. However, now that it is done, the house is very warm!(posted 9004 days ago)