I've got an antique colonial. The kitchen is in the back L that was added on in the late 1800s. It's got a crawl space. The floor is sagging in the Kitchen and I know that the joists must need to be reinforced so my "honey dew" can put in my new bamboo floring ... and so my refrigerator doesn't end up sinking into the crawl space!
Fixed joist ... new floor (I've waited 3 years now!!!! Come on HONEY DOOOOOOOO me!