Abstract
A new three-story building (steel frame, metal deck, concrete floor slabs) for the performing arts includes a dance studio on the upper level. An isolated concrete floor was installed within the dance studio, which is effective at attenuating impact sources (as modeled by a standard tapping machine), and normal foot fall (walking, light dancing, or similar). Hard-shoe, percussive dance (e.g., step dancing) by solo dancers and especially a chorus of 20 to 30 dancers, generates significant foot fall noise and vibration within the building, that is audible in the spaces one and two floors below the dance studio, and causes perceptible vibration of the building structure. Structural analysis relating natural frequency of building structure with natural frequency of isolated floor and forcing frequency of dancers was performed. Noise and vibration testing, with tapping machine and dancers, was also performed. Stiffening of slab with additional steel column to reduce effective span was effective in reducing magnitude of intrusive noise and vibration, as demonstrated by testing with dancer as source.
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