I Fig. 16 Festival Center of Salzburg. (1) New Festival Theatre; (2) Old Festival Theatre; (3) Riding School in the Rocks (4) Civic Hall (5) Faistauer . Foyer. Fig. 17 Festival Theatre in Salzburg: Support beams are borne by pillows set in Monchsberg cliff. Fig. 19 Festival Theatre. Salzburg: Structure of stage house roof. beams bear on pillows in the rock (See Fig. 17). Fig. 18 is a cross-sectional view of the stage house. The total approximate weight of the roof alone is 261 tons. The main beams are 88 feet long and 8.2 feet high, whereas 8 cross members are 246 feet long (See Fig. 19). ....\:5...J: Ef~O·:fJ!o..~;l:: ... '":.~i.O Normally the proscenium is 46 feet, with a corresponding cyclorama. For opera performances the proscenium width can be increased to 98 feet and a second cyclorama 147 feet wide is then used. There are movable side panels in the front of the house which are adjusted to make the various widths of the proscenium opening. Five movable laminated steel walls, 29 to 36 feet high are on each side and are remotely controlled and electrically operated. Fig. 18 Festival Theatre in Salzburg; Section of stage house. show· ing main structure borne by cliff. 36 THEATRE DESIGN AND TECHNOLOGY I ,....,,~ I (