Remove lolly column
#1
03-10-00, 06:13 AM
I am in the process of finishing off my basement. I would like to remove one lolly column to give the room a more spacious feel. The existing span between three columns is 7.5' on one side and 4.5' on the other. If I remove the middle column, I now have a 12' span between columns. My question is, how do I determine the re-enforcement required that will allow me to safely remove the middle column? Is it possible? I'm thinking of 12' long steel plates or angle iron. The existing beam consists of 3-2x12's. The two outer 2x12's are seamed at this middle location! Thank you.
#2
03-10-00, 05:48 PM
How long are the full length 2x12 boards?
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MTAC - VB,MO
www.carpenter.cjb.net
Home repair & Construction
"Where the character and work are always upright"
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MTAC - VB,MO
www.carpenter.cjb.net
Home repair & Construction
"Where the character and work are always upright"
#3
03-13-00, 04:40 PM
The 2x12's are 12' long. The seams alternate between inside and outside every other column. There are five columns in total. I don't know if this makes a difference, but this is a two story colonial with and an open two story foyer. Thanks for any suggestions.
#5
03-14-00, 04:07 AM
TomK:
I ran some rough stress figures, and load calculations for you, and the results are questionable. From what I have determined, it would be well worth your time to get a structural engineer to look at this. I usually help people do this in writing, but with your type of home and the weight, in conjuction that there are three columns there so close together, I think you should get a professional opinion. This is not expensive, and they will tell you exactly how and what to use. Good Luck
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Jack the Contractor
I ran some rough stress figures, and load calculations for you, and the results are questionable. From what I have determined, it would be well worth your time to get a structural engineer to look at this. I usually help people do this in writing, but with your type of home and the weight, in conjuction that there are three columns there so close together, I think you should get a professional opinion. This is not expensive, and they will tell you exactly how and what to use. Good Luck
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Jack the Contractor
#6
03-14-00, 09:52 AM
More than a Carpenter:
This is the main beam that runs along the center of the house. On the first floor, there is a load bearing wall directly above the area where I want to remove the column.
Jack the Contractor:
Not knowing if I was going about this in the proper manner, I performed some basic calculations myself using the "modulus of elasticity" and "moments of inertia" of different steel members (steel plates, angle iron) and figured it would take some hefty re-inforcement to accomplish the task. (more than a "do-it-yourself" task) I appreciate the help!
This is the main beam that runs along the center of the house. On the first floor, there is a load bearing wall directly above the area where I want to remove the column.
Jack the Contractor:
Not knowing if I was going about this in the proper manner, I performed some basic calculations myself using the "modulus of elasticity" and "moments of inertia" of different steel members (steel plates, angle iron) and figured it would take some hefty re-inforcement to accomplish the task. (more than a "do-it-yourself" task) I appreciate the help!
