while spanning depths of 45m or even more, the limiting factor being cost rather than technology. Examples include the stands at Twickenham Rugby Football Ground, London; the new north and south stands at Murrayfield Rugby Stadium, Edinburgh, which have a clear depth of 43m; and the Husky Stadium, Seattle, with a clear depth of 48m.
• Cantilever roofs can be very dramatic, exploiting the excitement engendered by structure with no apparent means of support (Figure 5.10).
• The cantilever is as suitable for continuous bowl- shaped roofs as for isolated stands. In bowl sta- dia the individual frames can be arranged as a
closely-spaced series of vertical elements fluidly following a circular or elliptical plan form – as in the Parc des Princes in Paris – which is a great planning advantage.
Disadvantages
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Where the rear seating rows must be very dis- tant from the playing field the cantilever becomes markedly expensive and it may be found that a roof of the goal post type, for instance, can be built more cheaply. Whether the cost factor will be enough to outweigh other considerations (such as aesthetics) is a matter for careful evaluation.