Beam Hoop Reinforcement for Large Beams in Special Moment Resisting Frames
The tall building design community is in need of resolving the requirements for beam hoop reinforcement necessary to achieve adequate performance in large beams in special moment resisting frames in seismic environments. The issue is especially critical in high-rise buildings for which seismic resistance is concentrated in a few frames, resulting in very large beams. Laboratory testing is needed to resolve this significant matter for the concrete industry. Three beams, 4 feet deep by 2.5 ft wide by 14 ft long, will be tested statically under cyclic load reversals. The results of this research study will be considered for adoption as an ACI 318 Building Code provision that will ensure improved seismic performance of certain reinforced concrete moment frame buildings.
CPF research grant #
ACI Committee 374