L : ........ /-/ / ..----. I t~ ! ." i l I' . \ i/ '. I, I · . I ;:. '~'-'.. \ "y,>\ j I", ·t·_·\ . . J -. ....... Figure 6. 40 Combination of auditoriums utilizing three spatial forms. Common area for three forms, 100%; deep stage, 150% of common area; open stage, 250% of common area; arena stage. 420% of common area. ~ THEATRE DESIGN AND TECHNOLOGY MAY, 1973