splicing a pipe column and connecting to wood diaphragm

[ckar]

i am working on a residential project where we need to splice some pipe columns. I usually like to weld my connection but in this case being in a wood house i prefer to bolt. i am thinking to use plates at the end of each column which will be bolted together with 3/4 A325 bolts. Also this column has to be tied in to the wood diaphragm. I am thinking to use some straps between the connection plates to connect to plywood.
is this the usual way this is done? i hate to reinvent the wheel.
thanks

 

[ChipB]

Not knowing the specifics of what you are trying to design:

I usually saddle the timber beam (usually a LVL) the lower pipe column is supporting, then place the same saddle on the base of the post above. It's laterally supported by the plywood of the wood floor at this level. What you do to laterally support the upper post should be similar. Be careful with allowable pressures perpendicular to grain as well as bearing in your bolts if the post is trying to pick up.

If your detail absolutely has to work as you intended, change to a small WF column, bolt the splice together, and provide nailer holes where needed to tie the floor level in.

 

[csd72]

For tying into the floor, weld an angle each side with a vertical slotted hole, and bolt this to a solid timber blocking between joists. You then just need to provide enought nails between the blocking and the joists/floor plate.