Truss Attachment Information
Question:
Would you please inform me of the specified requirements of the size and the amount of nail attachments from the truss to the top plate?
Answer:
There are prescriptive provisions in IRC 2012/2015 R802.11 for roof tie-down to resist uplift. It permits attachment per IRC 2012/2015 table R602.3(1) item 5, which includes toe-nailed connections.
SBCA addresses this topic in Research Report 1507-11: Truss Uplift Design and the BCSI-B8 Summary Sheet, which covers the correct usage of toenailing as a means of uplift connection.