Remove sag from second story floor joists
Hello everyone! My husband and I purchased an old 1860’s farm house. When we purchased it we noticed the floors were slanted and bowed on the second story. We had a structural engineer inspect the house and he reassured us this was ok. Now that we have begun remodeling, we have discovered that the floor joists are old 2×6 lumber spanning about 16′ on average. I know the engineer said it was fine but it makes me very nervous since I have two young boys that like to jump off their beds and it causes the whole house to rumble. What I’m wondering is can I put one beam across the center of my living room and kitchen that would support the floor joist and make the floor joist span 8′ instead of the 16′? If so should I be looking into regular lumber or would I need a metal I beam? And if this will support the weight, could I also use this new beam to slowly jack the bow out of the floor or would that be too much weight on the beam?