Lateral resisting system problem
Lateral resisting system problem
(OP)
I have designed a single story steel frame structure with metal stud infill. I used threaded rod cross bracing to resist lateral loads. The contractor comes back and request that we use shearwall system. I'm having trouble getting the lateral load from the diaphragm (metal deck) into the shearwall without turning the stud infill into a gravity loadbearing system (connection from top of wall to beam to deck). I think one option would be to ensure that all dead load be in place before attaching the sheathing. The only problem is selecting a transfer mechanism from the deflected beam (gravity) to the wall below (lateral stability). Any help on this would be greatly appreciated.






RE: Lateral resisting system problem
What you might do is require a tube collector to be placed just below the main beam with a gap large enough to accommodate the vertical deflections of the roof beam.
Then, attach the stud wall top track to the underside of the tube. The gap between the tube and the beam would be small enough that any lateral force dragging in from the roof beam would be transfered to the tube via bending in the columns (or you could install some shear plates at each end of the beam/tube to avoid the small column bending).
Then sheath the walls.
You would have to take perpendicular component wind forces from the stud wall into the tube, which would span laterally from column to column. Some additional wind columns might be necessary.
This costs more for the tube, but you save money in not having a slip track, and not having X-braces.
RE: Lateral resisting system problem
Thanks
RE: Lateral resisting system problem
RE: Lateral resisting system problem
RE: Lateral resisting system problem
Dietrich Click on deflection connectors, when the pdf opens go to number 4 slotted SLP-TRK.
RE: Lateral resisting system problem
Not saying this wouldn't work, just saying its not a simple load path.
RE: Lateral resisting system problem