Wood post on concrete

[JStructsteel]

Designing a cover for a bar area at a local business. Contractor wants to use 18" piers, and then pour the slab over top. What is a good detail for post on the concrete? Was looking at a Simpson CB66, but that would have the wood post then burred in the slab concrete, which I dont like.
What have you done in the past with wood posts on concrete slab/footing?

 

[phamENG]

How about this one?

 

[dik]

I posted a detail in thread507-482589. I've also used a galvanised steel plate with a hole through the centre with a solid round BAR going through with the lower part of the bar embedded in the concrete and the upper part dowelled into the bottom of the post... OK if for steady axial loads only.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[JStructsteel]

Thanks
phamENG, could work. Will have to check uplift.

Dik, think I will have uplift.

I was thinking form the top of the footing to the size of the column wrap, then embed the anchor. I would hope I am still getting the capacity I need. Then the wrap would hide any joints.

See attached. Its not alot of columns, so the contractor could take his time to get it right.

 

[JStructsteel]

File, not sure it uploaded in last post.

 

[phamENG]

JStructsteel - I think it would be easier to achieve your required embedment in the pier below and extend the anchor projection an additional 4" (or whatever your slab depth is) so it's ready to take the post base after the slab has been poured. Unless the contractor wants to build the roof first and then pour, which is common where I am if the slab isn't part of the foundation for the building of above. In that case, I come back around to the PPBZ I linked earlier.

 

[JStructsteel]

phamENG, I think the Simpson CB665 is a fixed length, but will check into it.

 

[phamENG]

Yes, the CB66 is, but if you go to an ABU or something similar, you can set the anchor rod in the pier with the extra projection. It still has a lower uplift capacity than what you were looking at, but for the constructability concerns it may be worth adding a few columns. Or you could go with a custom solution - a steel knife plate with some studs on the bottom and through bolted into a slot in the 6x6 would probably hold pretty well.

 

[JStructsteel]

Another good option, thanks!