Hi. I am finishing off a basement playroom, and in the passage to the playroom, a doubled joist is sagging substantially. So much that the door above it is off an inch in 28 inches & won't close. Before cutting off that door I want to jack away some of the sag, but the problem is a permanent post there would cut into the passage corridor too much. It's wide enough now, but with little margin. But this sag point happens to be directly along a chimney stack of an inactive chimney.
I want to attach a cleat to the chimney with tapcons to support the sagging beam midspan. After temporarily jacking up the sag with a screw-jack, I would use a P.T. 2x8 on flat, run it all the way down the side of the chimney to the slab - where there is a footing for the chimney stack - and scribe it to the concrete there. I would use enough tapcons so the chimney stack would be the rigid member to prevent the 2x8 from buckling - as well as providing additional load support from the shear of the screws. Does this sound like a good solution? My instinct says yes, but I want to check with people here.
I would not remove the sag completely - but most of it. I would do it incrementally, a quarter in per day over 3 or 4 days. Anything I should watch out for?
I want to attach a cleat to the chimney with tapcons to support the sagging beam midspan. After temporarily jacking up the sag with a screw-jack, I would use a P.T. 2x8 on flat, run it all the way down the side of the chimney to the slab - where there is a footing for the chimney stack - and scribe it to the concrete there. I would use enough tapcons so the chimney stack would be the rigid member to prevent the 2x8 from buckling - as well as providing additional load support from the shear of the screws. Does this sound like a good solution? My instinct says yes, but I want to check with people here.
I would not remove the sag completely - but most of it. I would do it incrementally, a quarter in per day over 3 or 4 days. Anything I should watch out for?
