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 11-27-2012, 05:18 PM   #1
Newbie
 
Join Date: Oct 2012
Posts: 2
Rewards Points: 0
Share |
Question

Beam support


The house I just bought has a large irregular shaped hole cut through approximately 1/3 of the main beam supporting the second floor joists above the garage. The beam is 5.5" thick x 18" wide, the previous owner chopped through the beam to mount an overhead garage door opener then removed the jack post to open up the garage. The beam is sagging approx 1" in center. I had an engineer design a metal saddle that is 3' long and weighs more than a hundred pounds and is held in place by 16 5/8" x 6" bolts. I need to jack the beam back up to level and support the metal saddle in place on the beam while I drill 16 5/8" holes through 5.5" of beam. I do have the advantage of having two big sons with strong backs. My plan is to mount two 4x6 posts under the beam on either side of where the saddle mounts to jack the beam up and hold in position while I mount the saddle. The only way I can think of to hold the saddle in place is to have my sons lift it a few feet at a time while I place concrete blocks under it to support it then drive wooden shims under the saddle so it is tight against the beam. Drilling a perfectly straight hole through this depth concerns me, I will drill from both sides but the holes really need to be perfect for the support to work as designed. I read on the net that putting a cd around the drill bit and aligning with the reflection in the cd helps keep the bit straight. Any ideas or suggestions on better ways to tackle the job would be great.

chris019061 is offline   Reply With Quote
Old 11-27-2012, 06:58 PM   #2
Civil Engineer
 
Join Date: Mar 2009
Location: Boston
Posts: 4,204
Rewards Points: 4
Default

Beam support


I am not clear on a couple of points. Does the saddle have predrilled holes in the steel on either side that you need to drill through? That would be very difficult, since the tolerance is relatively small. I gather you are planning to drill through the saddle from both sides, presumably planning to meet in the middle? That should be doable, however I would use a clamp to hold the drill, then use a framing square to make sure the drill is perpendicular to the saddle. Using a drill that is larger than the bolt will improve your chances of lining up effectively.

As to supporting the saddle, it is often possible to lift steel into position using a comealong supported from the ceiling. I installed a 220 lb steel beam that way, but lifting either end with the comealong, then supporting the beam on a step ladder (a strong step ladder should easily support 200 lbs). By working side to side, you can lift the saddle, support it, then lift some more, etc. Very dangerous to try to hold a heavy object over your head, very bad things can and do happen.

As to jacking the beam back to level, check with the engineer, this may not be necessary. It will not increase the strength of the beam, so the only reason to do it would be for appearance, i.e. you don't want an out of level floor. Jacking a large beam back to level must be done slowly and carefully, else you can damage the beam, attached framing, and crack wall plaster.

Daniel Holzman is online now   Reply With Quote
The Following User Says Thank You to Daniel Holzman For This Useful Post:
chris019061 (11-27-2012)
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
Ridge beam support column INFALLIBLE1 Building & Construction 21 03-17-2011 08:02 PM
How do I reinforce 3story main support beam markelly2008 Building & Construction 2 01-25-2009 09:45 AM
Q:Temp support to replace beam and posts on deck dougq Building & Construction 10 09-02-2008 04:24 PM
Deck support beam has twisted Brian Ward Building & Construction 5 07-27-2007 11:03 AM
drilling a support beam sdmotor Building & Construction 1 07-12-2005 10:51 PM




Top of Page | View New Posts

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