I have a barn with a ton of post that are rotting at ground level as seen in the pictures, I need to save this barn but I don't know how to replace these. Any ideas?

Build temporary supports and replace the old post one at a time I have the same issue I need to address in the barn. But some of mine are grounded by a concrete floor and I will have to cut out some concrete to replace them.

I don't know how to replace the actual post because of the concrete around it and I'm assuming it's encased in concrete.

A lot of work, but saved my building. replaced every post.

https://permacolumn.com/

Hammer and a chisel, and take it out piece by piece lol. That would suck!

Dig it out, get a chain around the concrete and lift it out with some of your equipment.

How is the rest of the wood?, can you sister a new post, dug in outside of the bad one and lag or bolt through?

Just wondering if a few good whacks with a sledge on the post itself would break it away from the concrete encasing it, taking a lot of the work out of removing it.

Moosetrot

I'd stall it , on both sides with good posts.
If wanting to keep rustic look, cover all 3 with 12" barn wood.

Masons revenge.
I asked this same ?? 40+ years ago.
The collective answer, Not My Problem.

Please keep us "posted".

Mamy of these had zero
roof water drainage, bad juju.

And there was .2 vs .4 retention TRT
for the real money savers.


My fur shed is right there with yours.

If I would have constructed that building, two runs of re rod would be drilled through each post making iT interesting to remove.
And yours is the reason I don't put post in the ground on anything I want to last.

Dig it out, cut it off where good and pour a cement post up to the good wood. They have cardboard tubes to use for forms to make it easy.

What I would do and have done. Bolts preferred.

If it’s holding now cut two one foot pieces of 4x4. Put them on each side of the post on the concrete. Drill two holes through the 1 foot 4x4 4 inches from each end. Match the holes on the original post. Bolt them together. Post can rot away in the ground as long as your concrete is good. Easy fix unless you want to get carried away and do a bunch of work.

Drew a picture so it’s easier to understand

can you post a picture of more of the wall and roof you are supporting ?

I am thinking there may be other options.

Yes, I'm going to head that way shortly and get more pictures. I appreciate everyone offering help, this is way out of my depth

When I ran pump jacks, two 2xs spiked together,
with a 3" rip of coil stock between,
and glued, were superior to a 4x.

Get up in the sky on a pick with jiggle test you'd believe me.

That’s why I’ve never run pump jacks. Scaffolding for me 100% of the time.

We dug down 12 inches, they're only rotten right at ground level and only on the outside