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Old 05-21-2019, 06:06 PM   #46
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


I'm just going to have someone look at it.

Thanks everyone.
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Old 05-22-2019, 08:03 AM   #47
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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Originally Posted by Nealtw View Post
I would put 2 ply 2x10 beams between the joist from the outside wall to the center bearing wall then build the 2x6 deck sitting on those. moving it all or most of it over to the 12' side would be better.
Wow... just wow. Think about the logistics of this Neal.

28 foot 2x10's, into the attic of a 2 story home?
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Old 05-22-2019, 01:02 PM   #48
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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Wow... just wow. Think about the logistics of this Neal.

28 foot 2x10's, into the attic of a 2 story home?
You have never sistered rafter?
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Old 05-23-2019, 11:00 AM   #49
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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You have never sistered rafter?
Rafter? We're talking about floor joists / ceiling joists.

So you're suggesting he cut the new 2x8 floor joist's up into short pieces and splice them?

Show me the span table for a 28 foot long 2x8 that's cut into pieces and spliced back together with more cut-up 2x8's.
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Old 05-23-2019, 12:29 PM   #50
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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Rafter? We're talking about floor joists / ceiling joists.

So you're suggesting he cut the new 2x8 floor joist's up into short pieces and splice them?

Show me the span table for a 28 foot long 2x8 that's cut into pieces and spliced back together with more cut-up 2x8's.
There is a bearing wall 16 ft. and I am talking about 2x10 so the load of the new floor does not touch the ceiling joists.



As far as getting 16 foot 2x10s in the attic, soffit vents or you cut a flat slot near the ridge.
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Old 05-23-2019, 12:36 PM   #51
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


When I did my attic work, I was able to slip my 16' 2x10's up through my daughter's bedroom window, and then straight out her bedroom door into the new door entry to the attic space. Had to store them stacked on diagonal, though, until I could cut/install each one individually (actually only needed about 14.5' lengths).
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Old 05-23-2019, 12:50 PM   #52
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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When I did my attic work, I was able to slip my 16' 2x10's up through my daughter's bedroom window, and then straight out her bedroom door into the new door entry to the attic space. Had to store them stacked on diagonal, though, until I could cut/install each one individually (actually only needed about 14.5' lengths).
Once you figure they have to get there, you will find a way.
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Old 05-23-2019, 01:21 PM   #53
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


Ok, I need to provide some further insulation clarification.

Please ignore the rest of this post if it's of no interest to you. Save yourselves. Run. Insulation now is of no interest to me.

I have a childhood knee injury (cartilage removed) that decided to uncharacteristically flare up in the last couple weeks, so I've been reticent to clime those @#$%ing attic steps.

When I looked up there again, I noticed that what was there was in fact the 2x10 insulation in between the 2x8 joists with some spots tufting up in patches an extra 2-3 inches. So I'm not worried about the insulation now.
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Old 05-23-2019, 01:30 PM   #54
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


Framing: Allow me to recap:

1. D-Fir used. 2x8 in attic, 16 oc.
2. Two sets of spans, as indicated.
3. Chart that I supplied shows that even #2 16' spans can support 20 llb/sqft.
4. Attic "beam" fully supported through each floor, bearing straight to the beams in the basement. Same exact span as the 2x10's on every floor.
5. (new count): The collar ties (maybe 7-8 ft. overhead) are of count 9. They might be functioning as rafter ties because of how far down they are.
6. I'm interested in 16'x16', centered over bearing support.

Is the guy I have over going to catastrophize and say "no" to upsell me on engineering, and/or is this simply too much worry?
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Old 05-23-2019, 05:00 PM   #55
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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Is the guy I have over going to catastrophize and say "no" to upsell me on engineering, and/or is this simply too much worry?



I would surprised if didn't say you are fine and good to go. You are not asking to convert the attic to living space.
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Old 05-23-2019, 09:39 PM   #56
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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Originally Posted by tgm1024 View Post
Framing: Allow me to recap:

1. D-Fir used. 2x8 in attic, 16 oc.
2. Two sets of spans, as indicated.
3. Chart that I supplied shows that even #2 16' spans can support 20 llb/sqft.
4. Attic "beam" fully supported through each floor, bearing straight to the beams in the basement. Same exact span as the 2x10's on every floor.
5. (new count): The collar ties (maybe 7-8 ft. overhead) are of count 9. They might be functioning as rafter ties because of how far down they are.
6. I'm interested in 16'x16', centered over bearing support.

Is the guy I have over going to catastrophize and say "no" to upsell me on engineering, and/or is this simply too much worry?

As long as that "bearing support" you speak of in item 6 includes load bearing support walls on the 2nd and 1st floors... the guy should rubber stamp the project.
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Old 05-24-2019, 08:33 AM   #57
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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As long as that "bearing support" you speak of in item 6 includes load bearing support walls on the 2nd and 1st floors... the guy should rubber stamp the project.
Yeah, that's what I've been trying to say (#4). Sorry if my non-contractor phrasing wasn't clear enough.

Thanks again, and in any case :

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Last edited by tgm1024; 05-24-2019 at 08:36 AM.
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Old 05-27-2019, 09:19 AM   #58
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Re: Attic flooring: Ok to flush cut joist hangers that are sticking up?


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Be sure to let us know what the pro tells ya.
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