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Old 02-16-2010, 10:19 AM   #16
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Raising overhead joists in my garage. Is this a good idea?


just push to bottom of top plates and be done with it and yes one at a time is fine with new jacks

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Old 02-16-2010, 10:36 AM   #17
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Raising overhead joists in my garage. Is this a good idea?


Scuba Dave,

I don't think I have ever seen that before.

I am not too sure you would still get to call that a 2x12 with the notch in middle though?

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Old 02-16-2010, 10:36 AM   #18
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Raising overhead joists in my garage. Is this a good idea?


You could notch the top 1/4 of depth - say ~2" to push the joist up further
That would give you a little more room

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Old 02-16-2010, 10:51 AM   #19
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Raising overhead joists in my garage. Is this a good idea?


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JP,

I don't think you can put the ties on the plates now. The rafter size and pitch is going to require too much of the rafter to be cut away. It's the width of the wood sitting on the plate that counts, so, if there is only 6" left after that cut, it doesn't matter that it's 2x12 in the middle. It's all bearing on the portion that's a 2x6, and that's too small for the span.

If you play around with the span calculator at http://www.awc.org/calculators/span/...rcalcstyle.asp, you will see that a 2x12 can handle that span as a ceiling joist with only minimal loads on top. You use that overhead space at your risk.

Joist to rafter framing will help support the roof. It is not intended to strengthen the load bearing capacity of the joists. I think you would need beams under the joists if you want to remove the center wall and use the joists for storage.
Ok, now we're getting somewhere. I checked out the calculator, but there is some terminology in there that I don't understand. Nor do I know what species of wood it is, but it looks like cedar. It doesn't smell like it, but it's red in the middle. Can you tell by looking at the pictures? Also, what do you mean by putting beams under the joists?

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Old 02-16-2010, 11:00 AM   #20
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Raising overhead joists in my garage. Is this a good idea?


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just push to bottom of top plates and be done with it and yes one at a time is fine with new jacks
Thanks tpolk, but I also want to take out the middle support system. Would this change your last response? I want to maximize my overhead clearance, remove the middle support system, but still be able to use the overhead for storage.

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Old 02-16-2010, 11:24 AM   #21
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Raising overhead joists in my garage. Is this a good idea?


You need to measure the distance between the wall studs from the inner edges
That will tell us your span distance
If the existing joists are 2x10's you probably need 2x12's to span that distance & use the above area for storage
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Old 02-16-2010, 12:13 PM   #22
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Raising overhead joists in my garage. Is this a good idea?


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Originally Posted by Scuba_Dave View Post
You need to measure the distance between the wall studs from the inner edges
That will tell us your span distance
If the existing joists are 2x10's you probably need 2x12's to span that distance & use the above area for storage
I still don't see how just setting the joists on top of the top plate, notched or not, will not allow the walls to fall in/out. Would I have to nail from underneath the top plate into the joist? I like the notched idea though.

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Old 02-16-2010, 01:00 PM   #23
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Raising overhead joists in my garage. Is this a good idea?


When setting the joists on top they must be securely nailed to the top plates
With a 2x12 you could notch out ~3"
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Old 02-16-2010, 01:28 PM   #24
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Raising overhead joists in my garage. Is this a good idea?


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When setting the joists on top they must be securely nailed to the top plates
With a 2x12 you could notch out ~3"
Sweet. Ok, so notch out a 3"x3" piece from the top end of the joist and lay it on top of the top plate. Then nail it from underneath the top plate and into the rafter it's up against. Do this for all of them and then remove the support system in the middle to open it up. How do you think this sounds? What else could I do to maximize the load capacity of the newly located joists without having to support it from underneath? Thanks!

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Old 02-16-2010, 01:44 PM   #25
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Raising overhead joists in my garage. Is this a good idea?


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What else could I do to maximize the load capacity of the newly located joists without having to support it from underneath?
Add more of them.
Add bracing/blocking between them.
Glue and nail a subfloor on it.
Ask an Engineer to inspect it.
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Old 02-16-2010, 02:15 PM   #26
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Raising overhead joists in my garage. Is this a good idea?


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Add more of them.
Add bracing/blocking between them.
Glue and nail a subfloor on it.
Ask an Engineer to inspect it.
Beautiful! Thanks so much everyone for your help on this. I really appreciate it. I'll be sure to post the final product!

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Old 02-16-2010, 03:20 PM   #27
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Raising overhead joists in my garage. Is this a good idea?


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Sweet. Ok, so notch out a 3"x3" piece from the top end of the joist and lay it on top of the top plate. Then nail it from underneath the top plate and into the rafter it's up against.

JP
You will not be able to get a 2x12 on top of the wall top plates
Not enough room, you need 9" clearance on top of the wall to the rafters
With 2x4 rafters you will be lucky if you have 4"

Notching the 3" is with mounting them under the top plate & supporting them with a stud just like the old ones
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Old 02-16-2010, 03:25 PM   #28
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Raising overhead joists in my garage. Is this a good idea?


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You will not be able to get a 2x12 on top of the wall top plates
Not enough room, you need 9" clearance on top of the wall to the rafters
With 2x4 rafters you will be lucky if you have 4"

Notching the 3" is with mounting them under the top plate & supporting them with a stud just like the old ones
Ok I see. Well, I guess that will have to do. It will at least give me another 20-24" of vertical clearance. Will this still allow me to remove the center support system? I don't even know how effective it is at this point. Is there anything else I can do do make it's support capacity just as strong as it is now without without having an obstruction in the middle? Thanks!

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Old 02-16-2010, 04:12 PM   #29
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Raising overhead joists in my garage. Is this a good idea?


if you remove 3" of wood on the end you are left with a structural 2x6 if those are 2x10. you could take precise dimensions of your span, roof material looks like 2x4 rafters, roof pitch and possibly take to a truss manufacturer and get a web design tying you roof framing to your ceiling joists so as to remove center wall. take along lots of pics
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Old 02-16-2010, 04:55 PM   #30
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Raising overhead joists in my garage. Is this a good idea?


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Originally Posted by tpolk View Post
if you remove 3" of wood on the end you are left with a structural 2x6 if those are 2x10. you could take precise dimensions of your span, roof material looks like 2x4 rafters, roof pitch and possibly take to a truss manufacturer and get a web design tying you roof framing to your ceiling joists so as to remove center wall. take along lots of pics
Notching is allowed & meets code
In addition he (said) is going to support the joist underneath at the wall with a 2x all the way to the bottom plate

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