I find Robert Benaim's remarks on the controversy sparked by NCE's debate on the Millennium Bridge sway particularly apt in the paragraph referring to the Tacoma suspension bridge failure.
Benaim illustrates a design (NCE 13 July 2000) for a similar type of bridge to the Millennium Bridge except the cables do not appear to descend below the deck. The deck also seems to be much wider relative to the length.
Benaim describes the deck of this 1996 bridge as 'very flat'.
Why was it so designed when his calculations revealed that excessive vertical deflections would thereby result?
John Walton, Elkstones, Westington, Chipping Campden, Gloucestershire, GL55 6EF