Hurricane Ties for TJI's
Hurricane Ties for TJI's
(OP)
All common Simpson hurricane ties, such as H1, H2.5A, H3 are too tall to anchor TJI's to the bearing plate without installing unnecessary web stiffeners.
(2) 10d toe-nails each side of TJI will satisfy my lateral collector requirement, but, I hesitate to specify this due to the relatively small bottom chord of the TJI.
A TJI specifier's guide recommends (1) 8d each side, but, i need (2) 10d.
Any other hurricane tie or other suggestions?
Thank you!
(2) 10d toe-nails each side of TJI will satisfy my lateral collector requirement, but, I hesitate to specify this due to the relatively small bottom chord of the TJI.
A TJI specifier's guide recommends (1) 8d each side, but, i need (2) 10d.
Any other hurricane tie or other suggestions?
Thank you!






RE: Hurricane Ties for TJI's
I am not sure how you use a hurricane with a TJI and get any meaningful capacity.
It is rare that I use them for roof framing.
Maybe pre-drill the flange and run some screws down into the top plate?
RE: Hurricane Ties for TJI's
But I do agree with XR, although If it's uplift you're concerned with, I'd likely be looking at screws over nails anyway.
RE: Hurricane Ties for TJI's
jayrod... Thank you! Yes! Those WOULD have been options, but, the H4 & H5 are a discontinued product per Simpson C-C-2017, p. 11.
RE: Hurricane Ties for TJI's
RE: Hurricane Ties for TJI's
A couple thoughts, or a partial explanation.... The TJI people usually don’t like you nailing through the bot. flg. so close to the end, for flg. splitting reasons. The smaller toenails may be o.k. for a fairly small lateral loading, but the larger nails are more likely to cause splitting. Of course the new LVL flg. members are less prone to this splitting problem. “installing unnecessary web stiffeners” might not be so unnecessary from the TJI perspective. They don’t like you applying an uplift load (tension loading on the glue jnt.) on the bot. flg., particularly at the end, where there is a tendency for that load to unzip the flg./web glue joint. They would prefer that you get that load up into the web, by using blocking/stiffeners fixed to the web. Thus, the vert. screw are suspect too. I think you will find something in the TJI literature which says applying compressive loads through that glue jnt. is normal, and o.k., (i.e. floor load on top flg. or brg. loads at the ends), but tension loads, particularly on the (hung from) the bot. flg. should be carried past/around the bot. flg. up into blocking attached to the web material.
RE: Hurricane Ties for TJI's
I feel fortunate that most of my clients prefer dimensional lumber.
RE: Hurricane Ties for TJI's
RE: Hurricane Ties for TJI's
XR... you asked one question, followed by a "key" opposing statement.
"Why exactly do engineers like these?" - I did not imply that I like these.
"...my clients prefer..." <<<--- You "nailed" it here. I design per client preference, where possible. For whatever reason, "my" client preferred the TJI for the specific project in which I inquire.
RE: Hurricane Ties for TJI's
I will specify web stiffeners and hurricane ties. Perhaps this may convince the client to use dimension or LVL.
Thank you all!
RE: Hurricane Ties for TJI's
My biggest gripes with them are having to add stiffeners at point loads which is something that is usually left out. Even the bands require stiffener unless you use a 1 1/4" band. I also do not feel great about attaching a deck to those 1 1/8" OSB bands.
RE: Hurricane Ties for TJI's
RE: Hurricane Ties for TJI's
We do not use them for roofs where possible, although there are situations where they are used for that as well. As BSVBD noted, a lot of times it isn't our call, we can make the recommendation against using them but the client has final say. If we don't bow to their wishes for material type then they'll go find someone who will.
RE: Hurricane Ties for TJI's
I'm thankfully we are rarely in this situation. Usually, we get to dictate the structural approach. We obviously take the builder's input in mind when they are onboard the project, but ultimately it's generally our call on what to use.
RE: Hurricane Ties for TJI's
In this case, I can surely see convincing the contractor to using LVL's.
Thank you all for very valuable input!
RE: Hurricane Ties for TJI's
RE: Hurricane Ties for TJI's