I have some questions. I used to frame houses and poured footings and foundations, so I'm comfortable building. Tearing a hole in the side of my basement scares me *%$#less. My biggest fear is that once I make the hole, the top plate on the foundation and the bottom plate the floor joist are attached too won't be able to with stand the weight of the roof and bad things will happen before I can get a header in there or anything else. All I see is a giant hole in the side of my basement and the my house coming down. My house is old. The house was built in 1908. I'm guessing the foundation was poured in the 50s or 60s.