Sliding resistance from adjacent footing

[Samwise Gamgee]

I have a condition for braced frames forces at foundations. Footing 2 has uplift and its self weight + soil above + dead load from building is adequate to resist the uplift. However when uplift and shear happen at the same time, the weight itself is not enough to resist both sliding (as most of it is utilized by uplift). Can we consider the weight of strip footing on either side and even the weight of the adjacent footing to resist sliding ? (provided rebar in strip footing is adequate transfer the sliding force).

 

[phamENG]

It's all about the load path. How does the load get from one to the other?

 

[HTURKAK]

I would prefer combined rectangular footing .

...

He is like a man building a house, who dug deep and laid the foundation on the rock. And when the flood arose, the stream beat vehemently against that house, and could not shake it, for it was founded on the rock..

Luke 6:48

 

[calvinandhobbes10]

Yes. Common technique. Very direct reliable load path. Strip footing behaves as a compression/tension strut transferring the needed sliding. I often use a similar strut between column footings of a standard steel braced frame, for the same reason.