Reply to thread

Message: [QUOTE="Ottoble, post: 1213714, member: 2539"] Current dome is air supported so the air pressure acts as the columns and beams holding the roof and spreading the roof load evenly down to the floor structure if you remove the pressure all the weight of the roof and snow sits concentrated on the existing perimeter columns and foundations, not designed for it. Added to this providing a new structure, like a large arched truss, to carry the roof at +130ft spans adds additional structure self weight to these columns and foundations. One poster noted an external frame would be the most likely approach and he was on the right track. Now if they are expanding concessions and services, that external frame could be integrated into the expansion. [/QUOTE]