02:53PM | 01/05/03
Member Since: 07/28/02
2 lifetime posts

I am in the process of remodeling a house built in the late 1930. I just noticed that the floor are sagging about 1 inch on a span of 16 feet. The joist are 2x6 sistered with a 2x4 with a span of around 9 feet. The floors above are oak floors that I would like to salvage. I have several alternatives : 1) Put a 10 inch LVL beam across the whole house in the middle of the span and raise the joist by 1 inch using jacks. 2) Tear the whole floor and sister a 2x6 LVL beam next to the other joist. 3) Put a 10 inch LVL beam across the whole house in the middle and leave the joist as is.
Any one have any ideas? Please advise.

Thanks for the help.



07:46PM | 01/05/03
Member Since: 12/27/02
543 lifetime posts
We typically use a girder & slowly jack the floor level... often with the historical restoration we need to weight down from above as well. It takes time dependent on the joist type & crown or is that bow when it's the wrong way?
I know the coastal fir out here takes about a week to come back weighted, it's the oak that'll slow it down, you don't want to create too much loosening of the fasteners. You'll be leaving the girder in place so you could go with a 4x6 but it's depend on the post displacement (o/c's).


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