BSR E1.4, Entertainment Technology-Manual Counterweight Rigging Systems, describes the design and construction of manually powered counterweight rigging systems. The primary purpose of the standard is to enhance the safety of these system, which are used widely in theatres throughout the world to support and move scenery and lighting equipment. The draft standard does not cover motorized systems, systems for flying performers, or systems used for moving materials during building construction.
BSR E1.25, Recommended Basic Conditions for Measuring the Photometric Output of Stage and Studio Luminaires by Measuring Illumination Levels Produced on a Planar Surface, describes the basic testing conditions (e.g. the condition of the luminaire, the power supply, et cetera) for any a of a number of methods of measuring a luminaire's output that involve shining the light from the luminaire on a flat wall and then measuring the levels of illumination produced. The draft standard does not describe the equipment or measurement method used to measure the illumination.
The two documents are available by visiting the ESTA website (address below) or by writing to Karl G. Ruling, Technical Standards Manager, ESTA, 875 Sixth Avenue, Suite 1005, New York, NY 10001. Fax: +1 212 244 1505.
(Lee Baldock)
