DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Flooring (http://www.diychatroom.com/f5/)
-   -   Using a jack to raise joists (http://www.diychatroom.com/f5/using-jack-raise-joists-4428/)

drhowarddrfine 10-21-2006 06:43 PM

Using a jack to raise joists
 
I need to sister some joists in the basement. I have a 20-ton Husky bottle jack that can do the job. Most people say to only raise the joist 1/4 inch and leave it that way for a day before raising it again. Will the bottle jack be able to maintain that for the day or do I need to get another post to hold it in place?

Bonus 10-22-2006 12:38 AM

If the jack doesn't creep (has good seals) it will stay where you put it. But no harm in putting a post under it too. Are you just jacking the centre of the joists trying to take some sag out? Or are you lifting things up above as well?

drhowarddrfine 10-22-2006 09:42 AM

That's what I thought but I read an article that gave the impression the bottle jack was good enough. Thanks.

The stupid builders cut about 1/3 of the joist out for a vent. The joist now has a bow in it about 1/3 in from the plate on the foundation. So I guess I have to lift up around the middle.


All times are GMT -5. The time now is 04:29 AM.