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Old 02-25-2011, 08:42 AM   #1
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Re-locate or remove post in basement


Sorry for all the questions, guys but I have a home that is still in desperate need of help
I want to remove or at least relocate a jack post in my basement, ( currently I have 6 posts), and for the small size of the house this seems like way overkill, but there is one which I would like to move, or remove, the post in question, is on a beam, but there is only a living room floor above, I relize I would have to reinforce the existing beam, ( and there is plenty of room to do it, does anyone know what type of calculations to do? or what the standard maximum span of wood beams can be

thanks Jerry

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Old 02-25-2011, 09:10 AM   #2
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Re-locate or remove post in basement


Post some pics and we'll see what we can do

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Old 02-25-2011, 12:36 PM   #3
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Re-locate or remove post in basement


Quote:
Originally Posted by mrgins View Post
Post some pics and we'll see what we can do
great, I will try and put a drawing of measurements and a few photo's together by tonight
Thanks
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Old 02-25-2011, 04:56 PM   #4
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Re-locate or remove post in basement


Here's a few pictures, the house is a single story bungalow, does this layout seem normal?

the 3 poles shown on top of the sheet are known locations, the 3 on the lower part of the sheet are unknown, as there is a wall still up, basement was half finished, when we bought it. so I am assumimg they would be there,

Jerry

Re-locate or remove post in basement-dsc00349.jpg

Re-locate or remove post in basement-dsc00352.jpg

Re-locate or remove post in basement-dsc00353.jpg

Re-locate or remove post in basement-dsc00354.jpg

Last edited by jerrylee; 02-25-2011 at 05:08 PM.
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Old 02-25-2011, 09:14 PM   #5
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Re-locate or remove post in basement


do all you post look like the one in the picture? That is a telepost. It looks like someone was trying to lift that beam. Those teleposts are meant to be taken out after the lift is done and replaced with lally columns.
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Old 02-25-2011, 09:49 PM   #6
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Re-locate or remove post in basement


The calculations that are required are done by a structural engineer as there are point loads to contend with. That is why they are evenly spaced at 9 to hold that load as your drawing shows. In order to remove one post you will have to increase the size of your wood beam and that would be calculated by a structural engineer.
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Old 02-26-2011, 06:19 AM   #7
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Re-locate or remove post in basement


Need better pictures of the pole at the beam you want to move.
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Old 02-26-2011, 08:41 AM   #8
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Re-locate or remove post in basement


Do you have a trussed roof or rafters? I assume there is a bearing/nonbearing wall above the beam at 7' out. Can we get a pic of the room directly above that one beam and also the joists directly above the beam, and also inside the attic?
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Old 02-26-2011, 01:26 PM   #9
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Re-locate or remove post in basement


Post a picture or 2 showing the whole support line. The spacing of the poles based on the drawing is not atypical. You would need to consult a structural engineer for a structural reinforcement plan to remove any pole in the basement.
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Old 02-26-2011, 02:51 PM   #10
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Re-locate or remove post in basement


So, what you know is that the beam is supported every 9'. Right? It is one solid beam? right?

That being said, you can move your supports around, so long as you don't have more than a 9' span. Can you put 2 supports in that area and hide them in a wall to create the opening you are looking for?

Put a support 4.5 feet on each side of the post you want to remove and then remove it. Or 3' on one side and 6' on the other, etc....

Does that help any, so you don't have to worry about reinforcing the beam?


Bo

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Old 02-26-2011, 06:27 PM   #11
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Re-locate or remove post in basement


I would like to remove it completly, or at least a 17' span
the beam is made up from 4pc. 2x10
there is a wide open living room above the beam, ( I will have to draw a scale layout + photo)
the house is approx 65' x 32 the roof has only one ridge that runs in the center, very basic

Yes I am sure to hire a structual engineer would be best, but i would still like to see how far I can get on my own,

Last edited by jerrylee; 02-26-2011 at 06:30 PM.
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Old 02-26-2011, 06:43 PM   #12
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Re-locate or remove post in basement


Not that far without the help of a structural engineer.
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Old 02-27-2011, 06:50 AM   #13
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Re-locate or remove post in basement


Sounds like your about as far as you can go right now 17' call an Engineer now.
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Old 02-27-2011, 07:43 AM   #14
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Re-locate or remove post in basement


I've been framing homes for the better part of 25 years and have used everything from built up dimensional lumber to steel beams and flitch plates.

IME, even the best engineered lumber will deflect over time, especially in areas of high moisture.

17' span should be done in steel.

In addition, the footings under the post you will be adding load too is probably insufficient for the new load, assuming there is a footing.
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Old 02-27-2011, 04:55 PM   #15
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Re-locate or remove post in basement


Thanks Guys

Loneframer: , thanks, I did not take into account the existing footings, with the increase in load, your absolutely correct I will have to look into that, these poles do appear to have footings,

I can see now it is a little more involved then simply taking the sawsall to it, and I probably should just forget about it and move on, but unfortunately this one pole really bothers me,

I have been studying this very basic page on beam spans http://www.the-house-plans-guide.com...an-tables.html which has explained some sizing for me, and my expectation 18' is right off the scale


I appreciate the good advice about getting a structural engineer
but, as mentioned I will go as far as I can on my own, I have the software to do professional load and deflection calculations on most materials, so I will keep poking at it , as I gain more info on it


Jerry


Last edited by jerrylee; 02-27-2011 at 05:37 PM.
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