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The structure supporting the auditorium roof comprises six double trusses and is a made entirely of wood. It was designed so as to allow the individual parts to be constructed and prepared on the ground so that only the assembly work needed to be performed up high.
The process of assembling the structure was nonetheless extremely challenging. The trusses at the front of the building are held in place by V-shaped supports, while those at the rear rest on a timber frame construction that houses the storage rooms. Because the two outer trusses have a far greater load to carry than the four in the middle, two different truss types were used. The outer trusses feature a lattice design while the middle trusses have no bottom chord (so as to offer greater ceiling height).
