D1.A.10.5 Combined Forces and Torsion

Doubly and Singly symmetric members subject to flexure and compression - H1.1

Rolled I
Rolled Channel
Solid circular bar
Solid rectangular bar
Tee
HSS Rectangle
HSS Round
Built Up Channel
Built Up I
Double Channels – back to back
Double Angles
Built Up Box
I Profile With Cover Plates (Top and/or bottom)

Doubly and Singly symmetric members subject to flexure and tension - H1.2

Rolled I
Rolled Channel
Solid circular bar
Solid rectangular bar
Tee
HSS Rectangle
HSS Round
Built Up Channel
Built Up I
Double Channels – back to back
Double Angles
Built Up Box
I Profile With Cover Plates (Top and/or bottom)

Doubly symmetric rolled compact members subject to single axis flexure and compression – H1.3

If you prefer to use only cl. H1.1 even when cl. H1.3 is applicable, this may be done with the INT parameter.

Unsymmetrical and other members subject to Flexure and Axial Force - H2

This section is used to check single angles.

Members Subject to Torsion and combined Torsion, Flexure, Shear, and Axial Force - H3

Checks for members subject to pure torsion or subject to torsion combined with other effects such as flexure or axial loads will be performed based on the profile shape of the member. Only the following section profiles are considered when performing torsion checks:

Closed profiles
- HSS Rectangle
- HSS Round
- Solid Circular bar
- Solid Rectangular bar
Open profiles
- Rolled I
- Rolled Channel
- Tee
- Single angle
- Built-up I
- Built-up Channel (Only if symmetric about X-X)
- I Profile With Cover Plates (Top and/or bottom)

The implementation will perform the AISC 360-16 code checks as per clauses H.3.1 and H.3.2 for circular & rectangular hollow shapes. For all other shapes listed above, the component will follow the design methods as per AISC Design Guide -9: Torsional Analysis of Structural Steel Members (DG-9).

For non-HSS members subject to torsion and combined stress, the program cannot detect the load-end restraint condition automatically from the model. You can specify this through TND parameter. Also, for some cases the distance where the torque is applied must be provided through the ALH parameter.