I want to attach 3×8 kd fir rafters (6/12 pitch; 2 ft centers) to a 4×8 kd fir ridge beam. We will then apply 2 x 6 t & g fir decking. I invite a recommentation for a connection system that would be concealed. I am familiar with the Simpson CJT concealed joist ties, but they recommend a minimum of 4 x 8 rafters, and, when done, the pin holes will need to be plugged. Does anyone have a better solution?
I note that this is a hip roof, so I also need to deal with the connection of 3 x 8 jack rafters to 4 x 8 hip rafters. It doesn’t seem like the CJT connectors will be of any use there.
Thanks,
Replies
We use nails where I live. So this begs the question, where do you live?
I get the impression this is exposed on the inside, so he's looking for an attractive connection.
Then there was the old politician who went to see his doctor. He complained he was having to dodge issues he used to sidestep easily.
When we framed our family room in 86'. We routed 1/2" deep pockets for the 4x6 rafter to sit in on the 8 x 12 ridge, then toe nailed from the top. The building inspector made use use a 36" strap over the top of the ridge at each rafter as well. This was all covered by 2" T & G straight grained fir & 2" insulation board and then shake shingles.
ML
Galvanized 16d common nails, toed and set. Invisible, for all practical purposes.
Two GRK washer head screws from the back of the rafter (predrill from the endgrain side!) into the ridge will both hold it and suck it really tight.
I would probably route pockets if I wanted it to be refined looking.
Bevel the tops of the ridge and hips and set the rafters on top. Block between and strap over the tops of the opposing rafters.
Might look okay, depending on if the op wants to see the "exposed" beams. Then there's always the issue of ripping the t&g at the beam/rafter.