An architectural engineer to support the roof of an orchestra shell in AutoCAD, dwg file.

<p>This Architectural Drawing is AutoCAD 2d drawing of The structure shown forms part of a truss designed by An architectural engineer to support the roof of an orchestra shell in AutoCAD, dwg file. <strong>A full shell is 42' wide at the downstage wall, 30' deep from the plaster line and consists of eight movable towers with four ceiling clouds</strong>. The ceiling clouds are permanently hung on battens, and are flipped down to a horizontal position when in use.</p>