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shorteared 12-31-2012 08:12 AM

Basement posts for staircase
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I would like to replace an old post in the basement supporting the stairs (probably the basement stairs and main level stairs). I want to replace it because it seems to be in the wrong location and i would like more space in a tight spot.

It is supporting the stairs on a joist that is already supported by the main beam (see photo). I believe the post should be on the first joist that has been cut in order to have built the stairs.

My question is about the type of jack posts I can use to support the stairs. Do these have to be single structure posts or can I use adjustable telescoping (2 piece) posts? Any help, thoughts, comments would help me out greatly.

shorteared 12-31-2012 08:16 AM

Sorry photo is upside down

oh'mike 12-31-2012 08:27 AM

Show us the floor joists that that pole is holding up----and the beam that you mentioned--

Right now,that column is not very strong and needs help----

shorteared 12-31-2012 08:27 AM


joecaption 12-31-2012 08:30 AM

Back up and take another picture so we can see the framing at the top.
That support under the post is all wrong, should have been a header between the floor joist so it was fully supported not just sitting 1/2 way on a stack of wood.
There should have been a footing under it all the way down to the ground.
With a longer coloum all that blocking could have been done away with.

oh'mike 12-31-2012 08:30 AM

They are right side up on my monitor--------

shorteared 12-31-2012 08:39 AM

do these help?
2 Attachment(s)
in the photos below the post with the 2x8 braced together is holding a joist that runs from the foundation to the main beam which can see in the other photo that is held up by a properly used and placed beam.

The photo with the staircase support should show you the joists in question along with the staircase itself.

shorteared 12-31-2012 08:51 AM

1 Attachment(s)
here is another shot from the ground looking up. I believe the post should be on the joist beside the post to support it because that joist has been cut . the joist that the post is on currently runs all the way to the support beam.

oh'mike 12-31-2012 08:54 AM

That column is really important----the rim joist along the stair opening is supported by a single floor joist--and that post---without that post,right where it is--you will need to triple up the supporting ,single, floor joist---

That is a guess---you need someone with structural/framing knowledge to look at it---

BigJim 12-31-2012 08:56 AM

My stars, I don't know where to start, you really need to get someone there to see that in person, you have more than just the post to worry about.

joecaption 12-31-2012 09:11 AM

Supports done wrong like that are the main reason most old houses have sagging floors all around the stairway.
Amazing it did not just pop out and tip over.

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