Offset load on edge beam

[H0211]

Came across a relatively complex problem at work. I am fairly new to S&T design, so thought I'd get opinions from engineers on here. Designing a 'suspended' slab on ground with cont. edge beam supported on regularly spaced piles with an offset column (wall) load.

Would ideally prefer to design using a S&T model as per the below but the reaction at B would put significant shear at the top of pile, reaction at A can be added to the slab diaphragm forces.

Alternatively I could consider it as a slab run as per the below and reinforce accordingly.

Currently, I am designing as per the second option and thickened the slab joining into the beam to achieve the bending capacity at the step. However I wanted to understand which would be the correct way to go about designing and detailing this beam.

 

[KootK]

If you complete your S&T like this, you eliminate that shear at the top of the pile.

This really just an S&T way of saying that you'll use the slab to brace the beam torsionally.

 

[TRAK.Structural]

If you are designing using ACI 318 than there are provisions for torsion in beams. Depending on the magnitude of torsion and the cross sectional properties of the beam you can likely ignore/justify that the slab will alleviate this concern as KootK mentioned.

 

[Tomfh]

I would do the second approach, which is essentially what Kootks diagram ends up doing anyway. It rectifies the moment via slab bending.