Foundation Eccentricity

[BadgerPE]

I am designing a foundation with finished grade near the top of the wall on both the interior and exterior. Also the wall is fixed to a 6" floor slab on the interior. I have a large load acting on the exterior 1/3 of the wall caused by a 16' brick facing of the dimensional lumber wall. My question is, do I need to account for eccentricity in a foundation like this? My initial instinct is no because the floor system and lateral earth pressures will all hold the structure in place and no additional reiforcement would be necessary to prevent bending. Any advice on this would be great!

 

[Lion06]

You have a foundation wall that is pinned at the first floor and pinned at the footing? If the brick is on top of the wall, then I agree with you. If the brick goes to top of ftg, then I say design the ftg for the eccentricity.

 

[BadgerPE]

The brick stops on top of the wall. Thanks for the help!

 

[COEngineeer]

If the grades are on the top of the wall on both sides then you really only have to look at vertical load unless your wall sticks out from the grade pretty far, then you have to design for bending on the wall.

Never, but never question engineer's judgment

 

[COEngineeer]

The soil passive pressure will more than likely take care the eccentricity.

Never, but never question engineer's judgment

 

[Lion06]

I would bet that friction between the ftg and soil will take care of it, too.