Portal bridge (stage technology)
The Portal Bridge ( English portal bridge ) is in today's parlance, a part of the stage equipment and a frame of the element of the stage. It is usually the supporting frame above the stage, which on the one hand forms the upper frame for the stage and on the other hand serves as a suspension for lighting and other technical elements.
Historically, certain drawbridges were also referred to as "portal bridges".
technology
The portal bridge, together with the portal towers, forms the "portal" at theater stages. The portal is located at the front edge of the stage and delimits the stage to the auditorium. It also offers attachment and suspension points for spotlights and other technology, as well as panels and stage elements. Depending on the size of the stage, the portal bridge can be walked on to get to the individual spotlights, and today's portal bridges are often height-adjustable and movable and in some cases even multi-storey. These framing elements usually consist of aluminum or steel rods, as they have to comply with fire protection regulations. The stage can thus be changed in format by moving panels or adjusting the height of the portal bridge. Electric or hydrostatic drives are mostly used today to raise or lower the portal bridge; there may still be hand-operated lifts on small stages. Some of the portal bridges can be lowered to stage level for maintenance work.
literature
- Bruno Grösel: Stage technology: mechanical equipment. Oldenbourg Industrieverlag 2007: 118 . ISBN 3702905553 , 9783702905552
Web links
- stage223.com : Stage Lexicon .