Shear From Torsion Link

: The standard equation for torsional shear stress ( ) in a circular member is:

The angle of twist uses ( c_2 ) instead of ( J ). shear from torsion

While I-beams are great for bending, they are notoriously weak in torsion. Engineers often use "box" girders or closed tubes when twisting forces are expected in building designs. : The standard equation for torsional shear stress