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Old 02-22-2013, 01:10 PM   #31
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Attaching bottom plate to subfloor


Or use 2x 6 and sister next to studs by nailing together

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Old 02-22-2013, 01:11 PM   #32
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Attaching bottom plate to subfloor


I would run them say way as rafters they would double up as collar ties
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Old 02-22-2013, 01:17 PM   #33
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Attaching bottom plate to subfloor


Thank you so much for the help. But I'm lost on your last post. Are you saying run the ceiling joist the same way as the roof rafters? The reason I was doing this the other way was the span of the room is 21ft long by 14 wide at the biggest part. The room is L shaped. The long wall is 21ft

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Old 02-22-2013, 01:19 PM   #34
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Attaching bottom plate to subfloor


Quote:
Originally Posted by kaschmid3 View Post
Or use 2x 6 and sister next to studs by nailing together
Do you mean take a 2 x 6 and connect both walls together? That seems the easiest way to make it so its one cavity.
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Old 02-22-2013, 01:24 PM   #35
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Attaching bottom plate to subfloor


U could always do non conventional top plates 2 x nailed to exterior wall with a 3 3/8 rip of 1/2 in plywood then another 2 x nailed to that so your top plates would be 3 1/2 by 3 1/2
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Old 02-22-2013, 01:25 PM   #36
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Attaching bottom plate to subfloor


Yes connect the rafters on top of your top plates.
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Old 02-22-2013, 01:26 PM   #37
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Attaching bottom plate to subfloor


Ps I want your attic
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Old 02-22-2013, 01:28 PM   #38
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Attaching bottom plate to subfloor


The rafters are 10 ft or so above where the top plate will be. This is a video of the attic. I think it starts at 3:20 or so https://www.youtube.com/watch?v=XaFk...e_gdata_player
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Old 02-22-2013, 01:50 PM   #39
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Attaching bottom plate to subfloor


Those little 2x up top are the collar ties connecting the roof rafters. U would want your new ceiling joists to connect the roof rafters at the height of your ceiling probably want 2x 6 since a long span. where it tees off just double up your furthest one I would even make those 2 a 2x8 and use joist hangers for the ones that butt into it
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Old 02-22-2013, 01:53 PM   #40
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Attaching bottom plate to subfloor


That one 2x4 on an angle connecting ridge to gable wall is to Keep everything ridged so to replace that after ceiling joists r in put 2x4 on flat nailed into ceiling joist and butt into sheathing next to stud on gable wall and nail into stud
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Old 02-22-2013, 02:35 PM   #41
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Attaching bottom plate to subfloor


That 2x4 is high enough to accommodate 8' walls.
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Old 02-22-2013, 04:33 PM   #42
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Attaching bottom plate to subfloor


Im still thinking that I don't need to tie this room into the existing structure. Just build 4 independent walls on the subfloor. The ceiling joists of the new room will tie in on the new double top plates of the walls I am building. This is how the other room is that is already on the second story, however it is tied into the external wall on one side.
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Old 02-22-2013, 04:51 PM   #43
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Attaching bottom plate to subfloor


Ok good luck. Ps nice size house and attic I'm a little jealous
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Old 02-22-2013, 05:00 PM   #44
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Attaching bottom plate to subfloor


Thanks so much for the help! I moved in this house in 2010. The builder built the upstairs so you could build another room if you want to. The flooring is 2x10 16" on center with a span no bigger than 16' . This was done when the house was built. I am turning the room into a dedicated home theatre. I've got 2 walls up so 15% done with framing. Understanding everything is getting a bit overwhelming. I've researched the hell out of this project and just when I think I've got it all planned something else comes up that I haven't thought of yet. . . . Like not having a floor joist to nail the long well into, or the fire code. I am learning as I go.
Stage 2 is building a half bathroom and more storage to the right of the top of the steps. I may let a contractor do that part!

Thanks again for the help.
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Old 02-22-2013, 05:06 PM   #45
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Attaching bottom plate to subfloor


No prob anytime it's what I do for a living and I enjoy it. I'm always willing to help someone who wants to learn. With this trade it's not about what I can build but how u can fix what u messed up( hopefully u only make that mistake once. I get to build custom high end housed on jersey shore. And some really old houses so I'm always learning. As i said good luck

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