DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Framing and Foundation > Floor Truss Goof




Reply
 
Thread Tools Search this Thread Display Modes
Old 04-28-2010, 06:14 PM  
Nestor_Kelebay
Emperor Penguin
 
Nestor_Kelebay's Avatar
Join Date: Mar 2009
Location: Winnipeg, Manitoba
Posts: 1,844
Liked 2 Times on 2 Posts

Default

I think the proof lies in the pudding.

By his own account, ChrisM says that his floor is much more rigid now than before. That means there's less deflection of the trusses now than before, and that HAS TO MEAN that the new assembly is stronger than what he had before.

I don't accept that stresses due to swelling and shrinking in a relatively soft material like plywood is going to cause problems down the road.



Last edited by Nestor_Kelebay; 04-28-2010 at 06:28 PM.
Nestor_Kelebay is offline  
 
Reply With Quote
Old 04-28-2010, 06:54 PM  
Wuzzat?
Banned
Join Date: Jan 2010
Posts: 2,328
Liked 168 Times on 155 Posts
Likes Given: 94

Default

Quote:
Originally Posted by Nestor_Kelebay View Post
the new assembly is stronger than what he had before.
at the cost of becoming indeterminate. Methinks it may carry the seeds of its own destruction.


Wuzzat? is offline  
 
Reply With Quote
Old 04-29-2010, 11:53 PM  
frozenstar
Senior Member
Join Date: Dec 2009
Posts: 253
Default

Wow. Those are some really nice reply. I had a good read guys!
frozenstar is offline  
 
Reply With Quote
Old 04-30-2010, 06:09 AM  
ChrisM
Junior Member
Join Date: Apr 2010
Posts: 9
Default

First let me thank everyone for their very knowledgeable replies and for taking the time to post them!

My initial plan was to plywood just one side of each truss with 5/8 ply. The engineer however was the one who said to do both. I suppose at that point I should have used 3/8 ply but I thought the engineer knew his business. The structure is truly stronger but how it will handle additional weight and perform in the future is my real concern. I have a home inspector who is a neighboring town's building inspector coming next week to look at the project. I'm going to show him all these replies and work from there. I am inclined to listen to Nestor_Kelebay but can't ignore the assestments of Wuzzat and CraigFl. The primary goal is a safe code compliant structure not only for my family but for anyone who may buy this home in the future.

Any additional sugestions would certainly be appreciated and I'm sure will be a real reference for anyone doing a similiar project in the future.
ChrisM is offline  
 
Reply With Quote
Old 04-30-2010, 07:02 AM  
travelover
Senior Member
Join Date: Aug 2007
Posts: 693
Liked 2 Times on 2 Posts

Default

Quote:
Originally Posted by Wuzzat? View Post
at the cost of becoming indeterminate. Methinks it may carry the seeds of its own destruction.
I admit it has been about 30 years since engineering school. Can you please explain why this is an issue for this homeowner?
travelover is offline  
 
Reply With Quote
Old 04-30-2010, 02:40 PM  
oldognewtrick
Lost And Found Dept
HRT_ADMIN.png
 
oldognewtrick's Avatar
Join Date: Jul 2009
Location: Nashville, TN
Posts: 7,420
Liked 748 Times on 613 Posts
Likes Given: 235

Default

Quote:
Originally Posted by travelover View Post
I admit it has been about 30 years since engineering school. Can you please explain why this is an issue for this homeowner?
Travelover, I wanted to ask this my self, but after looking at the pics I would think that the weakest part of the boxed area is that all load or flex would be at the joints of the ply. If the joints would of been staggered, like we do when installing plywood decking, the load point would be changed to two locations instead of one, or spread out over the joist.

But then I'm just a roofer...
oldognewtrick is offline  
 
Reply With Quote
Old 07-24-2012, 08:09 AM  
DaveSTNJ
Junior Member
Join Date: Jul 2012
Posts: 3
Default

I had the same problem in my home with floor trusses. A structural engineering firm designed a very similar fix with plywood gussets on each side of the trusses. I can send photos and the drawing if that would help.
DaveSTNJ is offline  
 
Reply With Quote
Old 07-24-2012, 08:16 AM  
DaveSTNJ
Junior Member
Join Date: Jul 2012
Posts: 3
Default

Quote:
Originally Posted by DaveSTNJ View Post
I had the same problem in my home with floor trusses. A structural engineering firm designed a very similar fix with plywood gussets on each side of the trusses. I can send photos and the drawing if that would help.
I should also add that the engineer seemed like he had not encountered this problem in the past and seemed less than totally certain about the fix.
DaveSTNJ is offline  
 
Reply With Quote
Old 07-24-2012, 02:13 PM  
ChrisM
Junior Member
Join Date: Apr 2010
Posts: 9
Default

Well it's been over two years and the floor is still stiff and strong! Post the pics I'd like to see them.
ChrisM is offline  
 
Reply With Quote
Old 07-24-2012, 05:31 PM  
nealtw
Contractor
Join Date: Nov 2010
Location: Upper Fraser Valley, British Columbia
Posts: 14,215
Liked 1453 Times on 1281 Posts
Likes Given: 2500

Default

On two occations we have had roof trusses deamed under engineered and this is the fix they came up with. If the city were to fail it, you just shop for an engineer who will write the report that the city will accept An engineer would have a lot more nails in it.


nealtw 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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Open Web Floor Truss, Load Bearing Wall Question rlc2052 Framing and Foundation 1 03-10-2010 03:17 PM
Seasonal Truss lift, cracks CPS rerod Flooring 5 01-20-2009 10:50 PM
Resurfacing Concrete Floor & acid stain floor SPISurfer Flooring 13 12-18-2008 02:54 PM
Black truss marks on vaulted ceiling? jondoe Flooring 4 02-21-2008 09:36 PM
vinyl tile install goof up gomedh Flooring 2 09-30-2006 04:11 AM

Newest Threads

LATEST SPONSOR DEALS