02:09AM | 04/21/01
Member Since: 10/09/01
48 lifetime posts
Im a carpenter with 15 years in the trade, all comercial(steel and concrete). I am now starting a total remodle of a two sory house built in 1891. the house is ballon built, and totaly gutted except the sub floor and a couple of walls on the fist floor suporting the floor joist above. The biggest problem on the job is sagging floors. In the basement there are two main beam (4-2x10's) we installed two w8x10 steel beams suported 6ft on center w/4" adjustable coloums on 1/2" 12x12 steel plates under both beams. Over the last week we have lifted the beams in small amounts a total of 2 1/4". we ar still about 1 1/4" low. The structual eng. seams to think that the steel plates are just as good aa a footer under the coloums, well they are not, we have put our jack on a 3/4"x24'x24" steel plate twice. i told my project manager we are not going to raise the beams any more, instead remove the subfloor, sister joist new 2x10" and install t&g plywood. this will solve the 3" sag between the beam. he said i was spending too much money and wants to pour gyp-crete to level the floor. the sag is everywhere between 1/4" to 3", do you think this is too much weight on a sagging floor joist? we are all fans of your show and the question on the jobsite is what would bob do? so i thought i would ask


09:00PM | 04/21/01
Member Since: 03/27/01
11 lifetime posts
I'm a carpenter with 13 years in, also mainly commercial, but I have a 1890 house that has sloping floors. In my bathroom I did what you're suggesting- sistered on new joists and it worked pretty well. I can't imagine it would take you too long to do that in your case, plus then you would have the expected "feel" of a wood subfloor in an old house. Wouldn't that help out the installation of the final floor?
You could also keep cranking up those posts, seems like you were getting somewhere with that. Good Luck.


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