This is a column in the same mezzanine but not the specific column in the above-referenced thread (It's a completely different column approximately 100' away).
I am now being told, that the owner needs to move some equipment into the building during the construction process. The equipment can not be in place during steel erection. The splice will occur @ approximately 15'-0" above the floor.... and the column is approx 21' tall).... Yuck. Code is AISC/IBC-15.
We have gone around with the owner about this requirement. We tried moving the columns such that they don't interfere with his equipment moving plan and we have been denied in all instances, so we have been asked to coming up with a splice detail (which is attached).
This splice, by my calculations, should be sufficient to completely replace the bending strength of the column.... and replace the loss in moment of inertia (Ix and Iy). I am just looking to see if it passes the "smell" test.