Well, having had way too many close calls this tornado season, the wife pulled rank and said we "will" be getting a shelter this year.....which means I'll be doing it. Some room in the backyard, but getting equipment back there to dig and put in one of those semi-above ground shelters would really wreck my yard. With that in mind, I've been researching those garage flat storm shelters and after seeing what it did to Moore and left nothing but slabs, I think I'll go that way. My question, if they cut out a part of the slab inside the garage, would it not maybe effect the foundation? House has been solid ever since I bought it and don't really have any cracks anywhere. The house is a slab house with brick. Would installing one of these later lead to foundation problems? They are popular here in Oklahoma, but the soil types can differ from mile to mile. Kind of like the idea of having an enclosed shelter to get into instead of running outside. I have enough room to move my Accord forward to be able for the 3 of us and a barky-arshe dog to get inside. Just wondering about the effects on the overall foundation.