RAM Concept can consider torsion on a cross section in four different ways, depending upon the properties of the design strip segment or the design section. The four approaches are:
The methods considered are:
- Beam
- Considers torsion by designing with code beam torsion equations.
- As Shear
- Assumes torsion is carried entirely by varying shear across the cross-section "core" length L.
- The shear force per unit length is v = 6 T / L2
- The design shear force is Vd = V +/- 6 T / L
- As Bending
- Considers torsion by adding the torsion to the bending moment and designing bending for the combined total Md = M +/- T.
- Wood-Armer
- Refer to "Wood-Armer Torsion Design".
- None
- Torsion is not considered in any way.
