Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-07-2012, 05:25 PM   #16
Member
 
Join Date: Dec 2011
Location: B.C. Canada
Posts: 2,040
Share |
Default

Jack post spacing in basement


Tarheel it could be a regional thing but we use "Jack Posts" or "teleposts" all the time for permanent installation.

We have moved them, called for changes in the wood beam, wasn't even that big a deal Just added a 2x10 on each side of existing beam in our case I've also heard of adding metal plates to the sides of the beam. And dug a new footing.

We did not add 2 just moved the one and changed the beam.

mae-ling is offline   Reply With Quote
Old 07-07-2012, 06:29 PM   #17
MarginallyQualified
 
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,656
Default

Jack post spacing in basement


Quote:
Originally Posted by mae-ling View Post
Tarheel it could be a regional thing but we use "Jack Posts" or "teleposts" all the time for permanent installation.
Truly? They let that slide ?

A lally column is a solid steel tube/pipe with concrete in it set permanently.
A jack post (like a jack) has moving parts to raise it.
Attached Images
 

Last edited by TarheelTerp; 07-07-2012 at 06:31 PM.
TarheelTerp is offline   Reply With Quote
Old 07-07-2012, 06:54 PM   #18
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 4,165
Default

Jack post spacing in basement


The critical question with jack posts versus lally columns is whether the jack post is rated for permanent use. Some of them are, but you have to check with the manufacturer, because I believe most of them are rated for temporary use only. However, this is a detail that is beyond many inspectors. For example, my house has to jack posts in the basement, and two lally columns, all of which are load bearing. Been that way since 1959. Who knows what the rules were back then.

As for moving the existing jack post or lally column, whichever it may be, the OPS has stated that the existing post is NOT TOUCHING the beam. If that is in fact the case, the post cannot be carrying any load, unless you believe that spooky action at a distance quantum mechanics applies to lally columns. It may be that the post is actually needed, but was not installed correctly. Could also be that the post is not in fact necessary. This would be a call for the engineer to make.
Daniel Holzman is offline   Reply With Quote
The Following 2 Users Say Thank You to Daniel Holzman For This Useful Post:
GBrackins (07-07-2012), Mjclemm (07-08-2012)
Old 07-07-2012, 08:50 PM   #19
Newbie
 
Join Date: Jul 2012
Posts: 10
Default

Jack post spacing in basement


Quote:
Originally Posted by GBrackins View Post
steel columns under steel beams are normally welded all around to the beam. At least that's how I've done them the past thirty years.

Good luck MJ, let us know what the engineer says.
Thanks, that's what I had thought, what made me even think about moving it was 2 things, it wasn't welded, and it doesn't touch the I beam.mi will let ya know what they say.. Thanks again... Mjclemm...
Mjclemm is offline   Reply With Quote
Old 07-07-2012, 09:08 PM   #20
Member
 
GBrackins's Avatar
 
Join Date: Apr 2012
Location: Fairhaven, Massachusetts
Posts: 2,830
Default

Jack post spacing in basement


You are most welcomed.

I'm certain we would all enjoy your update. too many times we have posts that we never hear the results of. can also help to confirm advice that is given, or dispel it.

Good luck!
__________________
Gary

"You get what you pay for, and sometimes free costs more!"
GBrackins is offline   Reply With Quote
The Following 3 Users Say Thank You to GBrackins For This Useful Post:
drtbk4ever (07-09-2012), mae-ling (07-08-2012), Mjclemm (07-08-2012)
Old 07-08-2012, 12:32 AM   #21
Newbie
 
Join Date: Jul 2012
Posts: 10
Default

Jack post spacing in basement


Quote:
Originally Posted by TarheelTerp View Post
No... they are Lally (or Lolly) columns.
Jack posts are a different crittrer and areused solely for temporary uses.

4inches 4 feet 4 yards... you don't "move" them.

if you plan to replace one... then also plan to add two.
I stand corrected, thanks for the correct term to be using, the pole in this case would be a "Lally" column. Also, the 4' is for 4 feet. Just another question, have you ever seen a "Lally" that wasn't touching the I beam? Mine is approximently 1/16" short of the ibeam. I find it strang, the house was built in the 1980s in Wisconsin... Must be in the cheese..lol.l thanks again. I will refer the the post in question as a "Lally" post from here out.. Mjclemm
Mjclemm is offline   Reply With Quote
Old 07-08-2012, 09:59 AM   #22
AHH, SPANS!!!
 
Join Date: Apr 2012
Location: Durham NC
Posts: 1,652
Default

Jack post spacing in basement


Quote:
Originally Posted by Daniel Holzman View Post
The critical question with jack posts versus lally columns is whether the jack post is rated for permanent use. Some of them are, but you have to check with the manufacturer, because I believe most of them are rated for temporary use only. However, this is a detail that is beyond many inspectors. For example, my house has to jack posts in the basement, and two lally columns, all of which are load bearing. Been that way since 1959. Who knows what the rules were back then.

As for moving the existing jack post or lally column, whichever it may be, the OPS has stated that the existing post is NOT TOUCHING the beam. If that is in fact the case, the post cannot be carrying any load, unless you believe that spooky action at a distance quantum mechanics applies to lally columns. It may be that the post is actually needed, but was not installed correctly. Could also be that the post is not in fact necessary. This would be a call for the engineer to make.

maybe the floor/footing the post is set on settled some and the beam stayed where it was causing the space between the two. it might take years for the beam to settle down to the post but it may never, who knows for sure?
hand drive is offline   Reply With Quote
The Following User Says Thank You to hand drive For This Useful Post:
Mjclemm (07-08-2012)
Old 07-08-2012, 10:14 AM   #23
MarginallyQualified
 
Join Date: Dec 2011
Location: Winston-Salem NC
Posts: 3,656
Default

Jack post spacing in basement


Quote:
Originally Posted by Mjclemm View Post
...have you ever seen a "Lally" that wasn't touching the I beam? Mine is approximently 1/16" short of the ibeam. I find it strange...
We're back to assumptions...
1) the current column placement was calculated properly
2) the installer dropped the ball (no weld)
3) changing the PLACEMENT of the column opens you up to all manner of
issues not lease being inspection requiring 2012 standards.

If you weren't remodeling I'd suggest that you get a piece of 16ga steel to shim the gap and weld the column/beam joint. If you're plan is still to remove the column... the replacement(s) better be set in the right spot(s) and with a proper foundation.

How "right" gets determined usually involves an engineer. But as said before, a plan to replace one column with two (because of span issues) might be the safest bet.

Last edited by TarheelTerp; 07-08-2012 at 10:16 AM.
TarheelTerp is offline   Reply With Quote
The Following User Says Thank You to TarheelTerp For This Useful Post:
Mjclemm (07-08-2012)
Old 07-08-2012, 10:34 AM   #24
Member
 
Join Date: Dec 2011
Location: B.C. Canada
Posts: 2,040
Default

Jack post spacing in basement


Tele-posts here are rated for permanent use and have the advantage of being adjustable, so if your house shifts you can adjust them as needed.
mae-ling is offline   Reply With Quote
The Following User Says Thank You to mae-ling For This Useful Post:
Mjclemm (07-08-2012)
Old 07-09-2012, 01:29 PM   #25
Newbie
 
Join Date: Feb 2012
Location: Queensbury, NY
Posts: 8
Default

Jack post spacing in basement


I would agree with the other posts, consult an engineer.
As for the jack post, code states that the column must be at 3" in diameter.
R407.3 Structural requirements. The columns shall be restrained to prevent lateral displacement at the bottom end. Wood columns shall not be less in nominal size than 4 inches by 4 inches (102 mm by 102 mm). Steel columns shall not be less than 3-inch-diameter (76 mm) Schedule 40 pipe manufactured in accordance with ASTM A 53 Grade B or approvedequivalent.

You can get more info at www.DeanColumn.com
DeanColumn1 is offline   Reply With Quote
Old 07-09-2012, 01:35 PM   #26
Member
 
GBrackins's Avatar
 
Join Date: Apr 2012
Location: Fairhaven, Massachusetts
Posts: 2,830
Default

Jack post spacing in basement


Quote:
Originally Posted by DeanColumn1 View Post
I would agree with the other posts, consult an engineer.
As for the jack post, code states that the column must be at 3" in diameter.
R407.3 Structural requirements. The columns shall be restrained to prevent lateral displacement at the bottom end. Wood columns shall not be less in nominal size than 4 inches by 4 inches (102 mm by 102 mm). Steel columns shall not be less than 3-inch-diameter (76 mm) Schedule 40 pipe manufactured in accordance with ASTM A 53 Grade B or approvedequivalent.

You can get more info at www.DeanColumn.com
You are correct in Section R407.3, but so that others understand, the 3" schedule 40 steel pipe column has an outside diameter of 3-1/2", the inside diameter is 3".

__________________
Gary

"You get what you pay for, and sometimes free costs more!"
GBrackins is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Reuse Concrete Fence Post Pier & Fence Post Extraction JasonCA Landscaping & Lawn Care 2 03-24-2012 08:58 PM
build around a post jack warmar Carpentry 5 08-23-2011 08:18 AM
how to get power to lamp post from basement BlueBSH Electrical 4 08-18-2011 05:19 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.