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Old 11-15-2011, 07:29 PM   #1
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removing a small section of a load-bearing wall


I want to remove about 2 ft of a load-bearing wall. the end result will look something like in the attached pic.

the red beam represents what I'll be adding for new support, right on top of it are two existing 2x4 topplates.
my question is can I use a 4x4 or does it have to be a 4x6?

two 2x4 layed flat = 3 inches thick, plus a 4x4, that's 7 inches thick. does it work that way ?

ths
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Old 11-15-2011, 07:34 PM   #2
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removing a small section of a load-bearing wall


Iwould use 2-2x8 with plywood in between to equal the rough measurement of wall thickness...

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Old 11-15-2011, 07:51 PM   #3
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removing a small section of a load-bearing wall


No, it doesn't work that way. For a 5' load bearing opening, chances are what you propose is not adequate. What does this wall carry?
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Old 11-15-2011, 08:06 PM   #4
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removing a small section of a load-bearing wall


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No, it doesn't work that way. For a 5' load bearing opening, chances are what you propose is not adequate. What does this wall carry?

it's part of an interior kitchen wall. the attic floor joists run perpendicular to this wall on top.
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Old 11-15-2011, 08:10 PM   #5
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removing a small section of a load-bearing wall


consult an engineer in your region to look at the framing of your house. codes vary from region to region do to varying wind load and snow load amounts.

the engineer can tell you what you need to do to ensure your house doesnt cave in
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Old 11-15-2011, 08:14 PM   #6
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removing a small section of a load-bearing wall


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Originally Posted by oldhouse49

it's part of an interior kitchen wall. the attic floor joists run perpendicular to this wall on top.
A 4x4 does not work. The two top plates mean nothing with that 4x4. You need a header in there that has to be sized. Are you getting permits and inspections?
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Old 11-15-2011, 08:26 PM   #7
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removing a small section of a load-bearing wall


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Originally Posted by Joe Carola View Post
A 4x4 does not work. The two top plates mean nothing with that 4x4. You need a header in there that has to be sized. Are you getting permits and inspections?
I'm in SoCal, so not too much wind, definitely no snow.

I checked some framing book and online for span table, I think span for 4x4 is 4 ft, and 6 ft for 4x6. isn't this the general rule. house is one story with 1 layer of shingle. wood frame.

from: http://www.hammerzone.com/archives/w...ro_framing.htm

Header Sizing:

This table was found in a book titled Fundamentals Of Carpentry - Practical Construction, (5th Edition), by Walter E. Durban and Elmer W. Sundberg, published in 1977 by American Technical Society. Page 178.
Header Size:

Application: (Distance Spanned)

4x4 inch Up to 4' 4x6 inch 4' to 6' 4x8 inch 6' to 8'

Last edited by oldhouse49; 11-15-2011 at 08:32 PM.
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Old 11-15-2011, 08:32 PM   #8
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removing a small section of a load-bearing wall


I am curious, is your roof trussed or framed?

California has prescriptive designs for situations like this, you do not necessarily need an engineer for this but you should get plans and a permit.

This just safeguards you and the home's occupants.

Andy.

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Old 11-15-2011, 08:36 PM   #9
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removing a small section of a load-bearing wall


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Originally Posted by AndyGump View Post
I am curious, is your roof trussed or framed?

California has prescriptive designs for situations like this, you do not necessarily need an engineer for this but you should get plans and a permit.

This just safeguards you and the home's occupants.

Andy.

Andy.
framed. built in 1949.
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Old 11-15-2011, 08:45 PM   #10
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removing a small section of a load-bearing wall


Cut out those two top plates. They are not needed and only taking up space. Then use at least 2 2x8s with 1/2 plywood sandwhiched in between. This will probably be cheaper than what you said anyway because you can just buy a 10' 2x8 and cut it in half


Do not do what you proposed. It will not hold

Last edited by jimmy21; 11-15-2011 at 08:48 PM.
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Old 11-15-2011, 08:46 PM   #11
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removing a small section of a load-bearing wall


So put what you want to do down on paper, take it to the Building Department and see if it will fly.

What city? LA proper?

Andy.
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Old 11-15-2011, 09:02 PM   #12
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removing a small section of a load-bearing wall


Quote:
Originally Posted by oldhouse49

I'm in SoCal, so not too much wind, definitely no snow.

I checked some framing book and online for span table, I think span for 4x4 is 4 ft, and 6 ft for 4x6. isn't this the general rule. house is one story with 1 layer of shingle. wood frame.

from: http://www.hammerzone.com/archives/w...ro_framing.htm

Header Sizing:

This table was found in a book titled Fundamentals Of Carpentry - Practical Construction, (5th Edition), by Walter E. Durban and Elmer W. Sundberg, published in 1977 by American Technical Society. Page 178.
Header Size:

Application: (Distance Spanned)

4x4 inch Up to 4' 4x6 inch 4' to 6' 4x8 inch 6' to 8'
Are you getting permits and inspections yes or no?
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Old 11-15-2011, 09:10 PM   #13
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removing a small section of a load-bearing wall


Quote:
Originally Posted by Joe Carola View Post
Are you getting permits and inspections yes or no?
No. not that I don't want to but the previous owner had some unpermitted add-on's and I don't want to 'rock the boat'. But I do want to do a proper job.
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Old 11-15-2011, 09:16 PM   #14
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removing a small section of a load-bearing wall


Quote:
Originally Posted by oldhouse49

No. not that I don't want to but the previous owner had some unpermitted add-on's and I don't want to 'rock the boat'.
Wow....what a surprise! So...two wrongs make a right? Do the right thing and have the header sized and get permits and inspections. If not and you don't size the header right and you have a problem....you deserve what you get.

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