Working on a project where the existing TJI's are overstressed. I'm thinking about adding joists to reduce the tributary width problem is Ican't get any nails into the joist. I'm considering using an adhesive inlieu of the nails. Anybody know of a reference for construction adhesives that gives mechanical properties.
Eng-Tips is the largest engineering community on the Internet
Intelligent Work Forums for Engineering Professionals
reinforcing existing floor 3
- Thread starter calculor
- Start date
-
2
- #4
DaveVikingPE
Structural
This is a pretty good website on glues: Lepages is mentioned.
A star for Dave for a cool link.
As for the original post, if there are new TJI's added between the existing, I would try to use a more positive attachment. One suggestion is to use a short Z-clip on each side of the TJI top flange with short screw up to the sheathing and nail to the TJI flange.
As for the original post, if there are new TJI's added between the existing, I would try to use a more positive attachment. One suggestion is to use a short Z-clip on each side of the TJI top flange with short screw up to the sheathing and nail to the TJI flange.
- Thread starter
- #6
calculor, based on the bond strength of adhesive you may be able to calculate the amount of allowable shear transfer; however, it may be difficult to get that through the building department. ICC may have some test reports (or may not) but even then the building department still has the authority to prohibit the use.
For the Z-clip, I'd use the length comparable to a Simpson A35 clip with two fasteners at each attach points, staggered each side of the TJI flange.
For the Z-clip, I'd use the length comparable to a Simpson A35 clip with two fasteners at each attach points, staggered each side of the TJI flange.
-
1
- #10
SlideRuleEra
Structural
"Adhesives In Building Construction", free 165 page, .pdf from the USDA Forest Products Lab
![[idea]](/data/assets/smilies/idea.gif "[idea] [idea]")
- Thread starter
- #11
- Status
Similar threads
- Question