This standard covers design, manufacture and use of aluminium and steel trusses, towers and associated structural components such as tower head blocks, sleeve blocks, bases and corner blocks used in the entertainment industry. Entertainment activities are included but not limited to leisure, sports, arts, cultural performances, amusement or pres-entation of products. Examples of entertainment activities are: a) Product presentations; b) theatre shows, musicals, opera and ballet; c) classical, pop and rock concerts; d) festivals; e) exhibitions and trade shows; f) celebrations and parties; g) fairgrounds; h) conventions, demonstration meetings and i) production facilities for film, television or radio.
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