Historical
ANSI E1.4 - 2009
Entertainment Technology - Manual Counterweight Rigging Systems
ANSI E1.4 - 2009, Entertainment Technology - Manual Counterweight Rigging Systems, describes the design and construction of manually powered counterweight rigging systems to help assure the safety of these system. The standard does not cover motorized systems, systems for flying performers, or systems used for moving materials during building construction.
Entertainment Services and Technology Association [esta]