... Since the Paper was written, a third visit has been made to Wimbleball, further three-dimensionalcalculationshave been made for Llyn Brianneusing a new finite element mesh, and a successful series of tests has been carried out on a 180 m high arch dam in Switzerland. Wimbleball 60. The second visit...

... for the fundamental period of vibration has been assessed. For Wimbleball Dam (buttress), it was found that buttresses are not completely independent; in fact, appreciable energy transfer occurs between them. From two visits, when the reservoir levelwas21 m and 7 m below spillway level,itwas shown...