Heavy Truss (Glulam) Connection 1

[BadgerPE]

Came across this article relating to tall wood building design. Treet Building

I have never worked on a wood building taller than 3 stories, but it is a curiosity of mine. In the structural model image you can see it is designed with multiple truss-like frames. My question is how the heck do they connect those truss diagonals? It seems like they would see quite high tension forces. Maybe they are all steel plated or have some type of proprietary connection. I sure would be interested if anyone has any information on connections like these.

 

[jayrod12]

I would expect knife plates with lots of bolts. But that's just my experience with Glulam.

 

[Sawbux]

Maybe some IKEA fasteners?

 

[BadgerPE]

Maybe some IKEA fasteners?

Well played...

 

[dhengr]

BadgerPE:
Click on the link you show, and half way down in the print at the top, click on the highlighted “presentation at the 2014 International Wood Symposium.” This is a somewhat more detailed presentation of a few of the structural details. They used steel plates in slots, cut into the gluelam members, at the joints, with dowels through them both. On some large wood members and truss joints, they might have used split rings or shear plates and dowels (thru bolts). Or, they might use side plates and timber rivets. All three offer fairly substantial joinery forces for large timber members. Note that one of their selling points is all of the sequestered carbon in all of that timber. Also, both the large gluelams and the CLT (cross laminated timber) are large manufactured members over which they have considerable control in terms of mat’l. quality, strength and manufacture. These can both be made up of timber that is less than virgin timber, not old growth timber. This is a good use of a renewable resource, such as our std. plywood, osb, I-joists, etc. Also, large, thick timbers have a very good fire rating.

 

[BadgerPE]

Thanks for the heads up dhengr!