wood post on floor sheathing

[Lion06]

I have a situation in a 2-story existing building where I am installing posts in (4) locations. The posts will start at the first floor and extend to the roof. At the first floor are existing masonry piers with a 7 5/8" wide wood girder bearing on it and I am adding a 5 1/4" LVL to each side. 2x12's stack on top of the girders, and 3/4" sheathing on top of the 2x12's. The 6x6 post is going to bear on the 3/4" sheathing.
I have searched through Simpson's catalog and online but can't find a connector for this condition.
Has anyone else encountered this? How have you handled it? The post is taking gravity load only, no lateral.
In addition to the connection, I am a little concerned about sheathing having to span 2x12's with this post load on it.
Any suggestions would be appreciated, but I don't think I can extend the post through the sheathing to bear on the girders.

 

[apsix]

What about an upside-down fabricated tee? It can be screwed down to beams through the sheathing and the column is slotted to take the vertical leg, with through bolts.

I didn't understand the role of the 2x12's, and how the sheathing spans them, are you talking about floor joists? Is so solid blocking should be used to ensure a direct load path to the beam.

Is there uplift?

 

[COEngineeer]

So this post is on the top of the wood girder right? You need to put a blocking between the plywood and the girder if you were to stop the post at the top of plywood. So I think you should end nail the post then put blocking in joist space.

 

[COEngineeer]

You do not need a simpson connector unless you need to raize the bottom of column to avoid water (for exterior use) or if you have lateral or uplift.

 

[csd72]

Us a simpson bolted post connection but with lag screws instead of anchor bolts.

Check the axial capacity of the connector in the simpson catalogue.

 

[DaveAtkins]

All you need is "squash blocking" under the sheathing and above the beam. You can't just set the post on the sheathing.

DaveAtkins

 

[Lion06]

Thank you all for your input. I am going to put a column cap upside down on the post and bear it on the blocking between the 2x12 joists.