Ital Stage, partly based on consultancy from Prolyte, has developed the main construction for the silver Dome. The stage structure is a mix of steel and aluminium. Prolyte S52SV truss is used for the middle grid, B100RV truss for the main grid, combined with S36R truss which will act as supporting structure for an inflatable on top of the stage.
The inflatable structure provides a flow of heated air to prevent snow accumulation on top of the roof structure: the circular roof has an overall height of 22.8m and a clearance of 17m. The structure has a cantilever of 16m at the front, which is supported by S36V truss and by guy-wires attached to the middle tower. A (29m x 10m) video screen will be hung beneath this grid.
Two ground-support systems of ST towers with B100V truss stand within the Dome to support the video wall and sound system, further the Dome is flanked by two Prolyte Rigging towers for a delay sound system. The cantilever construction was tested with a test load of over 12 tons, which resulted in a deflection of only 3.9cm - an incredibly low figure for a construction with these measurements, say Prolyte.
(Lee Baldock)
