Adding floor joist support


  #1  
Old 02-16-05, 02:04 PM
W
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Adding floor joist support

I've got a heavy gun safe being delivered this week and would like to
provide some additional support for the floor where the safe will be
located. My house is a 1962 rambler and uses 2x14... or 2x something boards running the length of the house on about 16" centers. Spaced out every few feet are 3' dia. concrete rounds with a 4x4 post that supports the floor joists over their length.

Assuming the safe doesn't just happen to end up right over one of the
existing 4x4 posts, I would like to add one or two additional 4x4 posts
directly under the safe. Maybe even two 4x4 posts on concrete pier
blocks w/ screw jacks with a horizontal board across the top just a bit longer than the safe width, supporting the floor joists that are supporting the point
load of the safe.

I'm looking for some sort of adjustable house jack that would let me
screw up the tension on the boards. I seem to recall seeing something
like this, maybe from Simpson products? I think it was like a screw jack
that was mounted on a concrete pier block. The top of the screw jack had
a saddle to hold a 4x4. Anybody know what I'm talking about or where to
get them? I realize they make individual screw jacks for this purpose but I'm looking for the one that is integral with a pier block or concrete round.

Thanks
Wayne
 
  #2  
Old 02-16-05, 02:56 PM
W
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Hmm, I could have sworn I've seen these levelers that were integrated into the pier block and had a fairly long travel.

But maybe it was this simpson product I was thinking of.
http://www.strongtie.com/products/co...P.html#gallery

J and JP floor beam levelers. The J only looks like it has a max height of 13". I need more than that so may have to resort to using the JP model and a chunk of 4x4 for the post. What type of pier block should I use to set the post in/on?

I could probably use one of those deck blocks that a 4x4 would fit down into? Or should I use the kind of pier block that has a saddle already mounted on it, that way I could actually fasten the bottom of the post to the block?

Thanks
Wayne
 
  #3  
Old 02-17-05, 03:48 AM
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Gravity will keep the post on the block, the morer elobrate & heavy type anchor with a saddle isn't really needed. They do make an adjustable floor jack, pole jacks I believe they're called or basement jacks. They typically can be adjusted two ways, first is a pin which fits thru premade holes in the two piece(poles) of the jack which will allow for large jumps in elevation, they're spaced like every 4'"-6" up & down the jack. The top of the jack is a adjustable screw for fine tuning your level. Will look something like this http://ask.bairdwarner.com/images/ma...cture30311.gif
 
  #4  
Old 02-18-05, 01:39 PM
ttmon12
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jack posts or lally column - you can get them at Home Depot for $20.
 
  #5  
Old 04-19-05, 05:51 PM
ken bo
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lally column

what is a lally column?
 
  #6  
Old 04-19-05, 05:55 PM
ken bo
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jacking posts

i also meant to add this link to the jacking posts i found on the internet;

http://doityourself.com/store/floorjackposts.htm

some of them will hold up to 15000 lbs.
 
 

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