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Old 02-22-2009, 10:45 AM   #1
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Another Pass-Through Question


I have read and learned a lot on this site regarding opening up a wall. I have a few questions to help determine if this is a "safe" and proper solution. We have just spent 5 days creating baseboards and chair rails from MDF remodeling this room and had an idea for a built in bookshelf. The guest bedroom has some attic space behind one wall that we would like to open to make a built in shelving unit so that we do not lose floor space in the room. The wall appears to support the roof of the room and the empty attic space above. The door you see in the image is the attic access.... To the right of the pass-through is an exterior wall....

In the image below you can see a view from inside the room. The red lines represent the "pass-through" between the king studs, black lines represent a 2x6 header, and the green lines represent the jack studs. The opening will be about 5' 6" wide on a wall (not including the door) is ~8'.




Questions
1) is this possible and safe for the house?
2) should I use 2x6 or 2x10 for the header?
3) how many jack studs
4) how is the best way to support the roof while I cut out the pass-through?

Other images including those of the studs and rafters can be seen here....

Thank you for the assistance!

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Old 02-22-2009, 12:58 PM   #2
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Another Pass-Through Question


The structural aspects are done before the finish details.
Headers go at the top of the wall, not the middle. I would invest some time at the library or buy some framing books before you whip out any saws.
Ron

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Old 02-22-2009, 01:24 PM   #3
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I have a house very much like yours! The 'knee' wall may or may not support the roof! In my house the knee wall carries some of this weight, however the rafters are continuous from the ridge board to the top plate of the outside wall!
If your rafters are made in two sections ridge to knee wall and then knee to top plate, then your knee wall will be supporting the full load of the roof!
The lintel can be placed at any distance from the floor, as required! It is required to support the wall studs that will be cut short for the opening!
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Old 02-22-2009, 01:47 PM   #4
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Looking further at your other pics, I see that your situation is identical to mine! Only my 2X6 rafters have a 'birds mouth' in rafter where it rests on the knee wall.
The span of your opening is 5' 6" wide, and as the rafters are continuous to the outside wall, the knee wall isn't really a load bearing wall, so a double 2X6 lintel may be adequate. However, I would use a pair of 2X8's as the extra cost is negligible!
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Old 02-22-2009, 02:00 PM   #5
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A problem may occur, if your floor joists run perpendicular to your knee wall. If so the the roof weight would be transferred by the kings to a single floor joist at each end. In this case another lintel run at floor level could be used distribute the weight back to the floor joists in the middle.
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Old 02-22-2009, 04:33 PM   #6
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Wildie,

Thanks for the input!

I will try to get more information about the floor construction. I may be able to contact the builder to get more structural details.
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Old 02-22-2009, 04:39 PM   #7
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Quote:
Originally Posted by Ron6519 View Post
The structural aspects are done before the finish details.
Headers go at the top of the wall, not the middle. I would invest some time at the library or buy some framing books before you whip out any saws.
Ron
Thanks for your input... Isn't the top of a window also considered a header but is not the at the top of a wall with jack or cripple studs at the top?

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