Fig. 10From: Attenuation of pedestrian-induced vibrations in girder footbridges using tuned-mass dampersa Distribution of pedestrian frequencies for leisure (red) and commuting (blue) for pedestrian densities of 0.6 ped/m2 for the UK population b Structural fundamental frequency versus the span length for a prestressed concrete (cross section type 1) footbridge where the blue lines represent the range of vertical frequencies that can be excited by pedestriansBack to article page