update:

BQ or EN:

CEN/TR 13200-2:2005 Spectator facilities - Layout criteria of service area - Part 2: Characteristics and national situations
EN 13200-6:2012 Spectator facilities - Part 6 : Demountable (temporary) stands


new one is missing:

EN 13200-8:2017 Spectator facilities - Part 8: Safety Management

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