In the 18th and 19 centuries the theater characterized by a clear spatial architectural separation between the audience area and the stage by the orchestra pit. The most important on the conference facility to know the type of the wall and it should be acostectecs. It is a noise control that will control the sound to do not make noise to any neighborhood around the conference facility and the thickness of the wall o.47m . The proscenium stage it is known as the picture frame stage and its separate the action of the play through the frame. Stage it’s the playing area behind, or up stage of the proscenium arch, and sometimes the stage contains of proscenium arch. The parts of the stage are center of the stage, up stage, down stage, lift stage and right stage. Moreover, the stage contains of stage drapes, ante -proscenium door, stairs, orchestra pit and lighting grid. First the proscenium arch is the arch over the area of the theatre surrounded the stage opening. Stage drapes have many types (back drop), borders, teaser, ground –row, tab, leg, tormevtor and grand drape. And the orchestra pit it can be on the stage or in front stage by putting it underground level. However, the lighting grid are a perpendicular cross-hatches of pipe attached to the overhead structure above a stage, the grid have several perpendicular overlapping runs of 1-1/2’’. The average theater (with 300 to 500 seats) has a proscenium arch that is 5.5-6.7m high and 10.9-12m wide. Moreover the back stage is behind the stage and its contains of store, fly system, bathrooms, mechanical room or equipment room, independent access and rooms for preparation. Fly system is a system of lines, blocks, counter weights and related devices within a theater the enables a stage crew to quickly. Quality and safely fly components such as curtains, lights, scenery, stage effects and sometimes people. Also bathrooms important and access to make some privacy for actors or the pe