Wood Open Web Truss lateral load connection
Wood Open Web Truss lateral load connection
(OP)
I have a small commercial building using bottom chord bearing open web wood joist @ 16" o.c. spanning 54' with 1/2":12" slope, and bearing on a 2x6 wood wall. Low side heel depth is 32"-36". Not sure what is the most common or economical means to transfer the horizontal diaphragm to the shear wall below. I'd use solid blocking with TJI or solid lumber joist, but the open web joist makes it more complicated. Local truss manufacturer suggested having them build a small framed box that fits between the trusses. Any suggestions or references will be appreciated. Thanks!






RE: Wood Open Web Truss lateral load connection
Why are you using 16" spacing?
BA
RE: Wood Open Web Truss lateral load connection
Short answer to why the 16" centers is making it simpler. 24" spacing will work if I modified the details, but the contractor is geared towards 16" and changing it means I have to change their mindset. I don't know if that's a good answer, but it's an honest one.
RE: Wood Open Web Truss lateral load connection
RE: Wood Open Web Truss lateral load connection
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Wood Open Web Truss lateral load connection
KootK, that is what I suggested to the truss mfr, and they weren't keen on notching back the top chord.
Mike, I've used the Simpson's HGA10 in a similar, but the RBC looks simpler.
Thanks for your ideas.
RE: Wood Open Web Truss lateral load connection
RE: Wood Open Web Truss lateral load connection
I'd be asking why the heck not or if the truss supplier would like to foot the bill for the shear blocking panels. I used to be the truss supplier. The ribbon system is commonplace and a piece of cake from a fabrication perspective. The top chord isn't really "notched". Rather, it's just just shorter to begin with. Worse come to worse, have them fab the truss 1.5" short and add in the extra vertical block in the field.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Wood Open Web Truss lateral load connection
I've even seen some with a ribbon top and bottom.
Take a look at the images on Mitek's website:
http://www.mitek-us.com/floortrusses/mitekfloortru...
A confused student is a good student.
Nathaniel P. Wilkerson, PE
www.medeek.com
RE: Wood Open Web Truss lateral load connection