Cables in a modified fan design on a cable stay bridge
A cable-stayed bridge has one or more towers (or pylons), from which cables support the bridge deck. In the fan design, the cables all connect to or pass over the top of the towers. The fan design is structurally superior with minimum moment applied to the towers but for practical reasons the modified fan is preferred especially where many cables are necessary. In the modified fan arrangement the cables terminate near to the top of the tower but are spaced from each other sufficiently to allow better termination, improved environmental protection, and good access to individual cables for maintenance.
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accessallallowappliedarrangementbetterbridgecablecablesconnectdeckdesigneachenvironmentalespeciallyfangoodhasimprovedindividualmaintenancemanyminimummodifiedmomentmorenearnecessaryoneotheroverpasspracticalpreferredprotectionpylonsreasonsspacedstaystayedstructurallysufficientlysuperiorsupportterminateterminationtoptowertowerswherewhich
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