Lower double top plate butt joint?
Should the butt joints of the lower double top plates be nailed together? Toe nailed? I know the lap of the top plate must be a min. of 4′ but does the butt joint under the lap need any type of nailing to keep them tight or is the top plate nailing schedule enough?
Thanks
Replies
It's always been enough for me.
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I guess it is not code Piffin, I went to look at a few houses being framed down the road from me and some butt joints were nailed together and some were not.
No, they don't. Don't worry about it unless the inspector says something later(which I doubt) about it being code. They also don't have to land in the center of a stud, unless for some reason that's code.
Thanks guys.
What stage of the framing are you at now?
Joe Carola
Joe i'm starting to do layout for my joists and rafters. I made another rookie mistake though. I should have done my stud layouts from the same starting points on my exterior walls. I wanted to have my joists and rafters fall right on the studs below but now I can't do that. So now i'll have some joists and rafters fall on a stud bay instead of stud.
I made another rookie mistake though. I should have done my stud layouts from the same starting points on my exterior walls. I wanted to have my joists and rafters fall right on the studs below but now I can't do that. So now i'll have some joists and rafters fall on a stud bay instead of stud.
Why can't your rafters or joists follow the exterior wall studs?
Joe Carola
Because my studs don't line up from one exterior wall to the other exterior wall.
It won't matter much since it's a one story and it's on a slab because there will be no duct work running through them.
Are you getting psyched for cutting the hip roof yet?
Joe Carola
Nervous!!!
Nervous!!!
Post the size of the addition length and width to the outside of the top plates, the width of the ridge and the pitch.
Joe Carola
Joe. 43'-7 1/2" long, 25'-5 1/2" wide, 2x ridge, 4/12 pitch hip.
What size overhang?
Figure out the length of the commons, hip and ridge and post them here and we'll compare.
Joe Carola
Will do Joe.
What is the overhang?Joe Carola
2' Joe.
I checked with Chief Architect to see what they would figure them at. Interestingly, they do their commons on the ends different. Anyways, the commons on the main roof is 183 1/8". The common on the end is 185 15/16"The ridge is 218"The hips are 252 7/16"They don't show the distance to the birds mouth. I could eliminate the fascia and overhang and see what happens.
Interestingly, they do their commons on the ends different.
Anyways, the commons on the main roof is 183 1/8". The common on the end is 185 15/16"
That doesn't make any sense because all the commons should be the same length.
Using a 2x ridge and a 2' overhang no sub-fascia subtraction.
25' 5-1/2" - 1-1/2" = 25' 4"/2 = 12' 8" + 2' = 14' 8" ((Common Run)
Common Rafter length = 185-1/2"
The hips are 252 7/16"
Hip Length = 255-3/4"
The ridge is 218"
Ridge Length=(Length of Building - Width of Building + Ridge Thickness)
43-7-1/2" - 25' 5-1/2" = 18' 2" + 1-1/2" = 18' 3-1/2" or 219-1/2"(Ridge Length)
Joe Carola
Edited 9/7/2008 11:23 pm ET by Framer
"Interestingly, they do their commons on the ends different.
Anyways, the commons on the main roof is 183 1/8". The common on the end is 185 15/16"
That doesn't make any sense because all the commons should be the same length."
I thought maybe they dropped the end commons at the gables to allow ladders, but they are longer not shorter. I don't get it.... then again maybe I'm just tired.
I thought maybe they dropped the end commons at the gables to allow ladders, but they are longer not shorter. I don't get it.... then again maybe I'm just tired.
This is a hip roof. I would never use that program or any other program anyway because I wouldn't trust them for that reason.Joe Carola
Sounds like a good policy.
For starters,the program would have to be designed where they would deduct half the ridge thickness and subtract a 2x sub-fascia. By the time you type into the program, I could do it on the CM and have it all figured out already.
Joe Carola
I wasn't advocating to use the program for anything. I was just posting it as something to think about for no reason other than when I clicked on the framing numbers, they came up different and I was too lazy to pull out my calculator to see what I would come up with if I was cutting the roof. I knew you were going to post the numbers so I thought I'd document the plans numbers before I closed it and it dissappeared. It's gone now...I didn't save it.
Jim,
I wasn't implying that you were advocating the program. I was just saying that these programs and internet calculators if not programmed right leave a lot out as far as getting an exact measurement. The CM will arrive at the answer faster in my mind.
Did you ever figure out why your program has different side commons and why the lengths were off.?
Joe Carola
Maybe it's a bastard hip, but only on one end.
Heh
Bing
No, I looked closely at the 3d view and it appeared that the ridge was higher than the commons...almost as if they didn't drop the hip the way we do in reality. So, when I asked what your numbers were going to be, I was hoping to get the clue that I needed. My theory is that the program sets the height of the ridge according to the theoretical lines rather than the edges of the ridge like we do. I'll program in a 6" wide ridge and see what happens.
I think I see how the program is treating the different parts. I told Chief to build me a 6/12 roof with 10" x 10" ridge. Chief automatically makes the hips the same as the ridge. As you can see, the program assumes we are going to back all the parts instead of dropping them. This picture and maybe some bigger sized parts might go a long way with helping some understand how to back and drop the hips and ridges.
Joe I had a typo on my width. The width is 26' 5 1/2" I came out with 13' 10 5/8" + 2' tail= 15' 10 5/8" for commons. Hip is 19' 2 5/8" + 2' tail= 21' 2 5/8". Am I anywhere close?My existing ridge does not run to the edge of my new addition, it is set back so I was just going to figure it out from the last common rafter back to the ridge.
It won't matter. The double top plate is enough to carry the loads. Trusses are set at 24" oc and the studs are 16" oc. That means that trusses always find open bays to land on. Even really long trusses. You are okay.
Thanks Jim.