Structural steel grid assembled on flat bed jigsInner stressed steel skin welded to grid on jigsStressed panel welded from inside web. Lateral connection points alignedPanels undercoated and fitted with acoustic dampening membraneBulk thermal and acoustic insulationThermal multi-foil blanketRubberised battens with weathering steel skinFinal coatingInstallation
Unloading and jacking method for keeping boom below rail track
