Jack Posts For Wood Beam

 
Thread Tools Search this Thread Display Modes
Old 03-17-2008, 09:54 AM   #1
Preserving the Past
 
Jason Whipple's Avatar
 
Trade: Restoration & Historic Preservation
Join Date: Dec 2007
Location: Cincinnati, Ohio
Posts: 3,550
Send a message via Skype™ to Jason Whipple
Question

Jack Posts For Wood Beam


I've been looking around locally for a good jack post to put under an existing 8 x 8 wood beam. The problem I see with the ones I can get locally is that the pin you would use to screw upwards to lift the beam is only about 3/4" and the plate that goes on top of it is very thin and will not transfer the weight to the plate. I know this because I happend to use two of them on my own house a few years ago and the plate has bent at the outside corners alowing the beam to settle down and the pin to press into the beam about 3/8".

Is there a good adjustable post out there that I could use to lift this wood beam without this type of results? I need to lift the beam about 1/2" with the post and leave it there.
__________________
Jason E Whipple, General Manager
Historic House Restoration, Cincinnati, Ohio
Facebook | Twitter
Jason Whipple is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   
 

Old 03-17-2008, 08:27 PM   #2
Preserving the Past
 
Jason Whipple's Avatar
 
Trade: Restoration & Historic Preservation
Join Date: Dec 2007
Location: Cincinnati, Ohio
Posts: 3,550
Send a message via Skype™ to Jason Whipple

Re: Jack Posts For Wood Beam


OK, Maybe a better question would be, is there a proven way to avoid this dimpling affect in a wood beam when useing these types of posts?

__________________
Jason E Whipple, General Manager
Historic House Restoration, Cincinnati, Ohio
Facebook | Twitter
Jason Whipple is offline  
Old 03-17-2008, 08:42 PM   #3
The Duke
 
Kent Whitten's Avatar
 
Trade: Cabinet Maker
Join Date: Mar 2006
Location: Portland, Maine
Posts: 14,745

Re: Jack Posts For Wood Beam


Well, you might already know, but you're not supposed to leave them there, but enough mothering already! I'd say some thicker steel. 1/4", maybe 3/8". local yard might have some scraps they'd let you pilfer. Bigger the piece the better on my house.

Have you tried bottle jacks? That's what I've used.
__________________
If you correct your mind, the rest of your life will fall into place ~Lao Tzu

SalmonFallsCabinetry.com

Salmon Falls Cabinetry on Facebook
Kent Whitten is offline  
Old 03-17-2008, 09:06 PM   #4
Pro
 
Tin Cup's Avatar
 
Trade: Repair & Restoration Contractor and Specialty Graphics/Sign Installer
Join Date: Nov 2007
Location: Central Ohio
Posts: 195

Re: Jack Posts For Wood Beam


Jason,

I have mine made at a local welding shop. i get whatever length, size, base, whatever i need for usually about $50 each. usually only takes a day to get them. the two piece units aren't nearly strong enough. i usually get them to weld a nut so i can turn with a wrench instead just a hole drilled in the allthread.

i also bought some adjustable posts from Waco scaffolding years ago, very cheap, used them many times for different structural repairs. also cut a few of them off for use in a crawl space. they've paid for themselves several times over.

Tin Cup
Tin Cup is offline  
Old 03-18-2008, 09:08 PM   #5
HouseWright
 
Riversong's Avatar
 
Trade: Designer/Builder
Join Date: Mar 2006
Posts: 65

Re: Jack Posts For Wood Beam


Quote:
Originally Posted by Jason W View Post
Is there a good adjustable post out there that I could use to lift this wood beam without this type of results? I need to lift the beam about 1/2" with the post and leave it there.
There is a big difference in quality on these TEMPORARY jack posts, but I would use a screw jack and place a permanent post under that beam.
Riversong is offline  
Old 03-18-2008, 09:26 PM   #6
Curmudgeon
 
neolitic's Avatar
 
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,706

Re: Jack Posts For Wood Beam


I bought some extra base plates (1/4..5/16?)
at the masonry supply where I get permanent
columns made.
Have used them dozens of times for temp
supports and with bottle jacks, jackposts,
you name it.
I like to use two jack posts, one on
each side of the location for the permanent
post, then slide the "real" post in between
when the beam is back up to grade.
__________________
Put your location in your profile!
(Sorry....it seems there really are dumb questions)
neolitic is offline  
Old 03-20-2008, 01:43 PM   #7
Pro
 
billy d's Avatar
 
Trade: carpenter
Join Date: Mar 2008
Location: South west Germany
Posts: 429

Re: Jack Posts For Wood Beam


Hi guys if I read this right your complaining about the bruising on the timber.Why not place a bruising piece between the timber and the jack be for you jack it up a strip of ply 8`` or wider by 1foot say,this would take the the bruise and not the timber.Is it that simple or may be I`am just thick.Neoltic with his 2 jacks is right but this might involve 2 pieces of ply wood.
billy d is offline  
Old 03-20-2008, 04:35 PM   #8
Preserving the Past
 
Jason Whipple's Avatar
 
Trade: Restoration & Historic Preservation
Join Date: Dec 2007
Location: Cincinnati, Ohio
Posts: 3,550
Send a message via Skype™ to Jason Whipple

Re: Jack Posts For Wood Beam


It could be that I'm calling it by the wrong name. These are permenant posts. I saw one in a customers finished basement the other day. It looks just like a jack post, but definatly a little thicker looking has the holes through the two adjustable parts of the post were you put the pin in. The top has a screw thread that is a lot thicker than a jack post. Not much different at all from a jack post, but the flange on top of the treaded part is much thicker steel and hasn't bent at all, unlike the ones in my basement. My customers house was built in the 1950's and the floor was poured around it.
__________________
Jason E Whipple, General Manager
Historic House Restoration, Cincinnati, Ohio
Facebook | Twitter
Jason Whipple is offline  
Old 03-24-2008, 01:57 PM   #9
Preserving the Past
 
Jason Whipple's Avatar
 
Trade: Restoration & Historic Preservation
Join Date: Dec 2007
Location: Cincinnati, Ohio
Posts: 3,550
Send a message via Skype™ to Jason Whipple

Re: Jack Posts For Wood Beam


I found an interesting report on the differences between permanent and temporary adjustable steel posts.

Apparently, even though I've seen many used as permanent post, jack posts are not for permanent use (not that I doubted you framerman).

This article clearly defines the differences and what you should look for when using a permanent, adjustable, steel column.

http://www.octoberhome.com/articles/...ustcolumn.html
__________________
Jason E Whipple, General Manager
Historic House Restoration, Cincinnati, Ohio
Facebook | Twitter
Jason Whipple is offline  
Old 03-27-2008, 07:40 AM   #10
Pro
 
bob_cntrctr's Avatar
 
Trade: property manager & renovator
Join Date: Jan 2008
Posts: 660

Re: Jack Posts For Wood Beam


Quote:
Originally Posted by Jason W View Post
I found an interesting report on the differences between permanent and temporary adjustable steel posts.

Apparently, even though I've seen many used as permanent post, jack posts are not for permanent use (not that I doubted you framerman).

This article clearly defines the differences and what you should look for when using a permanent, adjustable, steel column.

http://www.octoberhome.com/articles/...ustcolumn.html
You could always move to Canada - it's not far from Vermont. From the article:



Itís Different In Canada The NBC (National Building Code) of Canada requires that adjustable steel columns conform to Article number CAN/CGSB-7.2-94 entitled "Adjustable Steel Columns" which allows single tube adjustable columns and telescopic adjustable columns, even at tube diameters of less than 3 inches (76 mm). Four Canadian manufactures of telescopic adjustable columns have submitted proof to the CCMC that they meet the article's structural requirements. In Canada, it is important to check that the column has a label to distinguish them from temporary columns.
bob_cntrctr is offline  
Old 03-27-2008, 07:50 AM   #11
Pro
 
bob_cntrctr's Avatar
 
Trade: property manager & renovator
Join Date: Jan 2008
Posts: 660

Re: Jack Posts For Wood Beam


I took the stock plates to my local welding shop. Had 'em cut over-sized plates out of 1/4" steel and tack weld the stock ones centered on them. Don't drill-through the screw jack hole, only the anchor holes. Cost ~$7 a piece, and you end up with 1/2" of rigid steel and a large support surface area.

bob_cntrctr is offline  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How To - Finding New Posts Nathan Contractor Talk Tutorials - How To Use This Site 12 05-08-2008 11:59 PM
I Beam ....or another alternative bkcm111 General Discussion 9 03-14-2008 04:33 PM
Updating main beam in century-home: end. bob_cntrctr Framing 8 02-07-2008 03:04 PM
deck beam sizing and post spacing? diyerforever Decks & Fencing 5 05-10-2006 09:58 PM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?