Allowable beam rotation

[stl001]

Can anyone provide some guidance on allowable rotations of W-sections for servicability considerations?

I have an architecturally finished wall section being supported by the W-sections. However, the wall is two feet off the centerline of the beam, and is creating a substantial torsional moment. The wall finish is sensitive to deformation and the beams cannot be laterally braced.

Any guidance on this issue would be greatly appreciated.

 

[Tomfh]

Maybe he has designed the stiffeners to restrain warping.

 

[apsix]

I trust that you have included the beam curvature defection in the total deflection.