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H1 to Bott Chord - Out-of-Plane Bending on Truss Plates

H1 to Bott Chord - Out-of-Plane Bending on Truss Plates

H1 to Bott Chord - Out-of-Plane Bending on Truss Plates

(OP)
Does anyone have a reference to where I can find information on the installation of a Simpson H1 connector to the bottom chord of a low heeled wood roof truss. The connectors are installed on the interior face of the exterior studwall and therefore connect to the bottom chord of the truss, which via load path to the roof diaphragm has to put the truss plates that connect the bottom chord to the top chord of the truss in out-of-plane bending.
I can not find where this is an allowed loading that can be quantified in any of the ER reports for truss plates.
Thank you.

RE: H1 to Bott Chord - Out-of-Plane Bending on Truss Plates

CalifPE,
I don't know if you are going to find a report that qualifies this situation.

In the Pacific NW this situation is handled by installing 2x "bird-blocks" between the trusses. The diaphragm is nailed to the bird block and the bird-block is attached to the double top plate with a Simpson A35,LTP5 or RBC. The H1 has a lateral capacity but the bird-block with framing angles keeps the trusses from rolling over under lateral loads.  

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