I had a question, we have purchased a new house.
Also, I have the builder using I-Joist to build the house, they are starting to hang the I-Joist on the hangers, the basement to the first floor is complete. I have noticed that they have only placed nails in the top and bottom hole of the I-Joist hangers leaving the middle 3 holes on each side empty with no nails. Is this acceptable as per the Ontario Building Code? Should they not be nailing through all the holes of the joist hangers as i've heard it will reduce the load bearing capacity?
As far as the Ontario Building Code goes, I am unsure as to specifics, but in most jurisdictions, all holes in joist hangers should be nailed. They are engineered that way.
When one hanger is hanging off another joist, a filler must be used behind the hanger against the OSB between the top and bottom chord.
That being said, many framers do what is required to get the bulk of the work done and close the house as quickly as possible and go back to do "back framing" towards the end. Also, in certain areas of Ontario, companies have separate crews to do the floors and walls, roof, back framing, so odds are it will be caught.
Rest assured that this is an item that the building inspector should catch.
I agree with Christian, hangers are designed to have all holes filled with the proper nails. In the case with engineered floor systems due to the I-beam shape to them, the engineered drawings will require extra blocking to allow sufficient nailing.
I always recomend home owners to send friendly emails to their builder to ask these questions, and keep track of all communication for future use. A reputable builder will address your concerns openly and honestly.
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