Glossary of Technical Theatre Terms – Events


CONSTRUCTION (DESIGN AND MANAGEMENT) REGULATIONS (CDM)
UK Regulations introduced in 2015 covering any construction project. Many live event construction projects (e.g. building set, raised stages etc) are covered by the regulations. 
UK Health and Safety Executive website

PIPE AND DRAPE
A method for screening off an area, creating a booth, or creating wings for a stage. Uses vertical scaffolding in a boom base (known as a tank trap) or telescopic lighting stands to support a system of horizontal scaffold tubes ('pipe'). Black curtains ('drapes') are attached to the pipe either using ties that are part of the drape, or by threading the pipe through a sleeve / pocket in the drape, or by using other fixings such as zip ties / cable ties through eyelets in the drape.

TEMPORARY DEMOUNTABLE STRUCTURE (TDS)
(UK Health & Safety) Any structure built for an event, whether it's staging, seating or a marquee or similar outdoor structure. 
UK Health and Safety Executive website