  How easy is it to suppress shake, rattle and roll in a long bridge or a
skyscraper? Most practical structures are designed so that long wave resonance
vibrations can be avoided. However, there are recent examples, such as the
Millennium Bridge in London or the Volga Bridge in Volgograd, which show that
unexpected external forces may result in large scale unwanted shake and rattle.
Full scale alteration of a bridge (or a skyscraper) would not be considered as
an acceptable option, unless the structure has collapsed. Can we fix this by
examining a representative part of the structure only and making small
lightweight changes? We will do it here and illustrate an idea linking the
engineering analysis to elastic waveguides.
