Eliminating torsion design
Eliminating torsion design
(OP)
I have a 42 foot long W24 roof beam that needs to support 12 vertical feet of brick with stud backup below. I have C6 channel hangers every 6 feet supported from W24 and a plate in between 6 inch stud backup. The C6 hanger supports an 8x6 tube lintel with angle welded to it to catch brick. The centerline of backup is 17 inches away from the W24 beam. There will be a kicker from tube to W21 that is six feet away. Calculating the torsion along with dead and live load leads to a W24x84. Can I neglect the torsion if I provide a W10 beam on other side of W24 at every plate/C6 hanger location? The W10 beam will connect to the W21x44 six feet away. This location is at the metal deck roof level of a one story building






RE: Eliminating torsion design
RE: Eliminating torsion design
1. Design the Wide Flange for the torsion, checking the strength as well as the stiffness/stability. With WF shapes the stiffness is very very small.
2. Remove the torsion from the supporting WF by providing an alternative load path (Per haynewp). Kickers, etc. are what is typically done.
3. Support the brick in some other way from the ground - you would still have the lateral wind/seismic to path up to the roof, though.
RE: Eliminating torsion design
RE: Eliminating torsion design