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What size beam to span 6 feet... maurice 08-19-2007
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Posted by maurice on August 19, 2007, 1:14 am
Okay, not sure if this is too loaded a question.

I have a bearing wall in a bungalow I'm remodeling. The wall runs the
length of the living room, and is pretty much in the centre of the
house, running parallel to the eaves. There is a wall in the basement
directly below, which presumably is a beam with teleposts.

I'm assuming the wall is bearing. I've removed the drywall, it's a
standard 2x4 wall with studs every 16", just what you'd expect.

I'm wanting to open the wall up, and make an opening approximately 78"
wide. I'm pretty much removing 6 studs.

What size beam do I need to use in this instance, (ideally using
regular lumber - I have some height to work with, probably enough room
for 2x10s if necessary), and how many studs need to support each side
of it?

Thanks in advance. If I haven't provided adequate information, please
let me know what else I need.


Posted by Bob on August 19, 2007, 7:12 am

> Okay, not sure if this is too loaded a question.
>
> I have a bearing wall in a bungalow I'm remodeling. The wall runs
> the
> length of the living room, and is pretty much in the centre of the
> house, running parallel to the eaves. There is a wall in the
> basement
> directly below, which presumably is a beam with teleposts.
>
> I'm assuming the wall is bearing. I've removed the drywall, it's
> a
> standard 2x4 wall with studs every 16", just what you'd expect.
>
> I'm wanting to open the wall up, and make an opening approximately
> 78"
> wide. I'm pretty much removing 6 studs.
>
> What size beam do I need to use in this instance, (ideally using
> regular lumber - I have some height to work with, probably enough
> room
> for 2x10s if necessary), and how many studs need to support each
> side
> of it?
>
> Thanks in advance. If I haven't provided adequate information,
> please
> let me know what else I need.
>
For headers, I always use two 2 X 12's with half inch plywood
between them. The 2 X 12's are glued and nailed one on each side of
the plywood. Perfect door heigth.

For jack studs, I use only one for up to eight feet. (That is one
jack stud nailed onto the regular stud.) For over 8 feet, I use
two jack studs,

Bob-tx



Posted by tbasc@bellsouth.net on August 19, 2007, 9:21 am
> Okay, not sure if this is too loaded a question.
>
> I have a bearing wall in a bungalow I'm remodeling. The wall runs the
> length of the living room, and is pretty much in the centre of the
> house, running parallel to the eaves. There is a wall in the basement
> directly below, which presumably is a beam with teleposts.
>
> I'm assuming the wall is bearing. I've removed the drywall, it's a
> standard 2x4 wall with studs every 16", just what you'd expect.
>
> I'm wanting to open the wall up, and make an opening approximately 78"
> wide. I'm pretty much removing 6 studs.
>
> What size beam do I need to use in this instance, (ideally using
> regular lumber - I have some height to work with, probably enough room
> for 2x10s if necessary), and how many studs need to support each side
> of it?
>
> Thanks in advance. If I haven't provided adequate information, please
> let me know what else I need.

There is not enough info for a guess at required beam size.
Supported load is important.
Consider the entire load path from roof to foundation.
Bob's comment about jack studs is worth taking note of.
They will take all the load from the beam and must be supported.
T


Posted by maurice on August 19, 2007, 10:03 am
>
>
>
> > Okay, not sure if this is too loaded a question.
>
> > I have a bearing wall in a bungalow I'm remodeling. The wall runs the
> > length of the living room, and is pretty much in the centre of the
> > house, running parallel to the eaves. There is a wall in the basement
> > directly below, which presumably is a beam with teleposts.
>
> > I'm assuming the wall is bearing. I've removed the drywall, it's a
> > standard 2x4 wall with studs every 16", just what you'd expect.
>
> > I'm wanting to open the wall up, and make an opening approximately 78"
> > wide. I'm pretty much removing 6 studs.
>
> > What size beam do I need to use in this instance, (ideally using
> > regular lumber - I have some height to work with, probably enough room
> > for 2x10s if necessary), and how many studs need to support each side
> > of it?
>
> > Thanks in advance. If I haven't provided adequate information, please
> > let me know what else I need.
>
> There is not enough info for a guess at required beam size.
> Supported load is important.
> Consider the entire load path from roof to foundation.
> Bob's comment about jack studs is worth taking note of.
> They will take all the load from the beam and must be supported.
> T

So how do I determine the supported load?

I guess I was being simplistic, I figured as long as what I built (new
header and studs) was as strong as what I removed (6.5' of 2x4 wall
with 16" studs), I thought I'd be okay.


Posted by on August 19, 2007, 1:23 pm

>> > ... I'm pretty much removing 6 studs.
>
>... I figured as long as what I built (new header and studs) was as strong
>as what I removed (6.5' of 2x4 wall with 16" studs), I thought I'd be okay.

6x1.5x3.5x900 = 28,350 pounds, if they couldn't buckle? :-)

Nick


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