DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Framing and Foundation > Laminating top plate, spacing joins help?




Help Support House Repair Talk by donating using the link above.
Reply
 
Thread Tools Search this Thread
Old 01-08-2017, 10:45 PM  
deepstuff
Established Member
Join Date: Aug 2008
Posts: 25
Default Laminating top plate, spacing joins help?

Hi,

I'm laminating three layers of 2x6 lumber together to form the top plate of a 32' long garage wall. We have a lot of wind. The longest 2x6 I have available is 26' long.

1. I have the bottom layer formed out of two 16' long pieces with join at the center of wall.

2. Middle section is formed from two 8-foot sections, a 16-foot, and another 8-foot section. So that there are two joins, one 8-feet from each end.

3. How should I make up the top layer? Should I keep the joins so that they do not align up with those in either the bottom or middle layers? Use 12'-8'-12', or 4'-16'-12'?

Thank-you


deepstuff is offline  
 
Reply With Quote
Old 01-08-2017, 11:02 PM  
nealtw
Contractor retired
 
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 23,349
Liked 2915 Times on 2556 Posts
Likes Given: 4800

Default

Most times, the top plate is double and the joins are about 4 ft apart. So I am sure that if you are off setting the joints, it should be fine.
It is the structure above that gives resistance to wind.


nealtw is offline  
 
Reply With Quote
Old 01-08-2017, 11:22 PM  
deepstuff
Established Member
Join Date: Aug 2008
Posts: 25
Default

Quote:
Originally Posted by nealtw View Post
Most times, the top plate is double and the joins are about 4 ft apart. So I am sure that if you are off setting the joints, it should be fine.
It is the structure above that gives resistance to wind.

Wall Is 32' long and contains two 10' wide garage doors. It butts a lot of wind and I'm just beefing it up so I have more to brace the gable end.
deepstuff is offline  
 
Reply With Quote
Old 01-08-2017, 11:36 PM  
nealtw
Contractor retired
 
nealtw's Avatar
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 23,349
Liked 2915 Times on 2556 Posts
Likes Given: 4800

Default

I would check with inspectors first. It's not the normal and if they are not sure they ask for an engineers report.
With a truss gable sitting on the wall wind resistance is looked after with cat walks ( 1 x 4 ) every 10 feet and sometimes angle cat walks all laid out by the truss supplier.
The top of the gable is braced back down to the top of trusses 12 to 14 ft away. and a long gable maybe more than one angle brace.
nealtw is offline  
 
Reply With Quote
Old 01-14-2017, 11:25 AM  
slownsteady
Administrator
HRT_ADMIN.png
 
slownsteady's Avatar
Join Date: Jun 2009
Location: Newton, NJ
Posts: 6,359
Liked 1129 Times on 935 Posts
Likes Given: 1846

Default

So it is actually more of a beam than a top plate. Why are you using the boards flat instead of on end?
__________________
Learn something every day
---
SnS
slownsteady is offline  
 
Reply With Quote
Old 01-14-2017, 12:55 PM  
JoeD
Senior Member
Join Date: Mar 2006
Location: Welland, Ontario
Posts: 1,451
Liked 246 Times on 208 Posts
Likes Given: 17

Default

Wall is 32'. Your lumber is 26'. Why would you not do it in two pieces for each layer. The less joints the stronger the wall.
I would have done
26-4: 18-12: 4-26

You should not line up any of the joints for the strongest wall.
JoeD is offline  
 
Reply With Quote
Old 01-14-2017, 01:05 PM  
slownsteady
Administrator
HRT_ADMIN.png
 
slownsteady's Avatar
Join Date: Jun 2009
Location: Newton, NJ
Posts: 6,359
Liked 1129 Times on 935 Posts
Likes Given: 1846

Default

...And if I am misunderstanding, and there is adequate support over the two garage doors, why do you need such a beefy top plate? I am not a pro, so if I am off-base, I would appreciate an explanation from the pros.
__________________
Learn something every day
---
SnS
slownsteady is offline  
 
Reply With Quote
Old 01-14-2017, 04:23 PM  
bud16415
Fixer Upper
HRT_ADMIN.png
 
bud16415's Avatar
Join Date: Feb 2013
Location: Erie Pa, Pa
Posts: 4,318
Liked 1434 Times on 1098 Posts
Likes Given: 774

Default

I also don't understand what that buys you in terms of strength with wind loads. If you have lots of wind things like hurricane strapping would be what i would do.
bud16415 is offline  
 
Reply With Quote
Old 01-14-2017, 06:18 PM  
Snoonyb
Senior Member
Join Date: Sep 2006
Posts: 2,402
Liked 420 Times on 372 Posts
Likes Given: 1

Default

I use only dbl top plates and for bracing I let a dia. 2X into the top plate 10' from each corner each way. Let the wind blow.
__________________
Illigitimas non-carborundum
Snoonyb is offline  
 
Reply With Quote
Old 01-14-2017, 11:45 PM  
slownsteady
Administrator
HRT_ADMIN.png
 
slownsteady's Avatar
Join Date: Jun 2009
Location: Newton, NJ
Posts: 6,359
Liked 1129 Times on 935 Posts
Likes Given: 1846

Default

Quote:
Originally Posted by Snoonyb View Post
I use only dbl top plates and for bracing I let a dia. 2X into the top plate 10' from each corner each way. Let the wind blow.
dia. means diagonal I am guessing.........


__________________
Learn something every day
---
SnS
slownsteady is offline  
 
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
joist spacing frodo Carpentry and Woodworking 6 10-27-2016 05:03 AM
Re-laminating kitchen countertops ScottH General Home Improvement Discussion 31 09-22-2016 12:43 PM
Plywood spacing Estpaul Flooring 34 09-01-2016 01:23 AM
Spacing flooring Servant_ Flooring 2 01-06-2006 04:24 PM