ACI Design Example? - Supplemental Footing Rebar where Column Base Plate is Aligned with Ftg Edge

[FoxSE14]

3-story steel building with office occupancy, beginning excavation next week. Original design was traditional spread footings with concrete piers below grade. Slab on grade at ground level.

Due to an 11-th hour developer-driven, construction phase elevation change, many of our foundation piers are slated for elimination, so it looks as if we will now have steel baseplates bearing directly on our footing. Many of the base plates near property line conditions will sit on the footing, very close (inches away) to the edge or corner of the footings.

Does anyone know the ACI document/design example/reference which shows an example for determining the top bars added directly below the load and developed into the footing to prevent a catastrophic breakout failure?

About 10 years ago, before I was smart enough to save/hoard references, I ran into this situation and we used an ACI document to guide our calcs. Having a heck of a time locating it now. I may purchase if I have to.

Any ideas where I might find that?

 

[KootK]

Yuckface. My recommendation:

1) Two way punching using one way Vc.

2) Hooked top bars designed like bearing anchorage for positive steel in beams. And concentrate that within 2d from the baseplate.

3) Feel-good hairpins making a pier cage of sorts for good measure.

My Spidey sense speculates that the doc you might be thinking of is PCA notes although that's a different animal in my opinion.

HELP! I'd like your help with a thread that I was forced to move to the business issues section where it will surely be seen by next to nobody that matters to me:

http://www.eng-tips.com/viewthread.cfm?qid=456235