Torsion in Wall group forces

I have a question regarding Wall group forces in RAM SS. How does RAM calculate Torsion in its Wall Group Force. I am not able to find this information online or in the manual. I am working on a gym, with plan dimension 100' x 60' and 30' high walls and i am getting high values of torsion. Its a simple rectangular building, there is no irregularity in the building. If I did it manually i would only consider Shear and Moments, but now I have torsion as well. 

Thank you,