Definition
A stage gerb is a gerb designed for pyrotechnics indoors or in immediate proximity to the audience: concerts, theatre, television sets, indoor weddings. Its low-smoke, cold-fallout composition throws a clean vertical column of silver or gold sparks 1 to 8 m high for 2 to 30 seconds. The gerb comes with an integrated igniter, mounts on a metal bracket or in a gerb holder and is fired by a dedicated firing system. Stage gerbs are classed T1 (general use, low loads) or T2 (professional use, certificate required). Manufacturers state a minimum distance to the audience and a ceiling height; “cold” versions based on titanium and zirconium tolerate even closer proximity.
In practice, for the display company
Stage gerbs open a different market, that of venues and stages, with its own constraints: ceiling height, distance to the audience, fire detection, venue manager approval. PyroDesk handles T1/T2 jobs in the same file as outdoor shows, recording the manufacturer's distances, and PyroSimulator renders the gerbs at their true height to validate the stage layout.