I have moment frames for a multi-story building where seismic controls the design, not wind force.
AISC ASD 9th Ed. on page 4-100 states "Many moment connections can be designed to resist wind moments only and, at the same time, to rotate sufficiently to accomodate the simple beam gravity rotation as a Type 2 (simple) connection."
My moment frames are part of a storage mezzanine with a gravity live load of 250 psf. Using composite construction, the beams are OK for simply supported gravity loads. When I combine the seismic loading plus the gravity loading and fix the beams at the columns, my columns and beams are blown out of the water.
AISC allows for designing the moment connection for wind only and the beams as simply supported. Does anyone know of any provision like that for seismic loading?
AISC ASD 9th Ed. on page 4-100 states "Many moment connections can be designed to resist wind moments only and, at the same time, to rotate sufficiently to accomodate the simple beam gravity rotation as a Type 2 (simple) connection."
My moment frames are part of a storage mezzanine with a gravity live load of 250 psf. Using composite construction, the beams are OK for simply supported gravity loads. When I combine the seismic loading plus the gravity loading and fix the beams at the columns, my columns and beams are blown out of the water.
AISC allows for designing the moment connection for wind only and the beams as simply supported. Does anyone know of any provision like that for seismic loading?