Originally Posted by hr(bob) [email

wrote:[color=blue][i]


You will have to put up cross-bracing between the joists at an
absolute minimum. Probably the best thing to do is to sister new
joists along side the original joists, but doing this only after
jacking up the oriiginal joists to somewhat highr than perfectly
horizointal and then putting in the sistering. You may have to put in
both the sistering and the cross-joists if you want a really stiff and
level floor. The only other possibility is to put in a new heavy-duty
joist/beam cross-wise under the lowest point of the sagging joists and
then jacking up the new beam somehow until the floors are level. You
may have to do this separately for each room, depending on the floor
joist pattern. Glad this is not my house.