My living room floor sags a little and my front door sticks. I asked a foundation company what to do about it because it makes me nervous and they told me that they'd recommend replacing my old wood center beam with a new steel one with 3-5 support posts. What concerns me is that this is a house built in 1919 and it's a terra cotta red block foundation. I'm not an engineer by any stretch, but can my foundation handle a steel beam like this? It would be nice to level my floor and hopefully get the front door working properly again, but I don't want to screw up my foundation necessitating another fix. Also, when I had my house inspected a couple years ago before I bought it, my inspector recommended that I replace my wood beam support posts with steel ones. That's why I contacted the foundation repair company - to have those replaced and tell them about my floor sagging.