One of the main design features in the new Ravenscroft Hall was the articulated “Blades” that flank the seating. The intent of the blades are both aesthetic and functional as they contained both absorptive and reflective design components. The articulating nature of the blades, similar to that of an armadillo, fold and nest within each subsequent blade. Functional components for theatrical lighting are nested and concealed within the blades to minimize equipment distractions.

 

The design of the Blades possessed an added complexity as they folded into the ceiling plan toward the back of the hall. Also adding complexity to the construction was that the outer masonry shell had a wall surface that was articulated with a “push / pull” concept so the entire wall was non-coplanar. Since the outer shell of the hall was the substate in which the Blade structure was mounted, the frame mounting points were always in a different plane.

 

We decided early on to have the interior of the masonry shell digitally scanned so that we had an accurate 3D representation of the build condition. We then modeled all components that interacted with the Blades and these included a sound shelf, theatrical and house lighting, mechanical, speakers, cameras, microphones and an integrated stainless steel handrail. Once these items were digitally modeled, we then exported our Rhino model into Grasshopper, a software program that allowed us to set three dimensional parameters in the X,Y and Z coordinates. These script parameters allowed us to maintain code requirements for handrails, equipment clearances and acoustical modeling performance. After dozens of iterations through computational modeling, we derived at a final surface design that allowed us to start the shop drawings for the steel armature. To maintain a lightweight frame, we utilized aluminum for the framing members. The fabric skin on the exterior was stretched and tucked into concealed channels for a seamless installation. If necessary, the fabric could be removed to access cameras and speakers should they require program adjustments.

 

Both digital and real mock-ups were created of the frames, fabric wrap and edge trim details. Once signed off by the ownership group, architect and acoustical consultant, we began the process of fabrication.

 

Although complex in its geometry, the detailing and craftsmanship of the execution provides the hall with a quiet simple shelter in which to view performances.