We Not I
A dance troupe of thirty people moving in unison is a substantial impulse, one that can become focussed on the natural frequencies of the immediate structure or the base structure beneath it. The dance could be intense.
A lot is now known about footfall vibration and the trick is not to kid oneself with the computer model and to exploit all ways of reducing potential responses with the construction at hand. The new studios were lightweight construction (bad) but secret-fixed facings and timber framing with flexi joints contributed a lot of energy absorbtion (good).
Another building within a building places three dance studio spaces onto the first floor of a very lightly built enclosure building, structure borne vibration and noise were not to break out of the demise and the structure had to be assembled in a very confined and inaccessible location.