| Description | The file contains Theatre Projects Consultants Ltd correspondence with various contractors regarding the drum revolve as well as meeting notes, file notes and sketches. Subjects covered include the digital control system; the issue and approval of drawings; the matrix room; personnel gates; gaining Greater London Council (GLC) approval; surround stage steelwork; the rising handrail; cable schedules; cladding; flooring; communication panels; motors; scenery doors; batteries; control desk; variations to prices and extra-contractual payments; spare parts; design problems and concerns about progress; delays to testing; meetings and disagreements between Theatre Projects Consultants Ltd, Mole-Richardson (Stage & Studio Engineering) Ltd and Evershed Power Optics Ltd; site supervision; commissioning; whether the drum can be used by the Theatre before completion; load tests for elevators; and scenery hoists. Other correspondents include Mole Richardson (Stage & Studio Engineering) Ltd; the Greater London Council (GLC); Evershed Power-Optics Ltd; Denys Lasdun & Partners; William Mallinson & Vigers Ltd; Pye Business Communications Ltd; Flint & Neill Ltd; Sir Robert McAlpine & Sons Ltd; Crown House Engineering Ltd; Davis, Belfield and Everest; the National Theatre; the South Bank Theatre Board; Humphries Holdings Ltd; E. M. Langham; P E Kemp Engineers Ltd; and Coubro + Scrutton (M & I) Ltd. The file includes colour samples for the control desks, sketch 904 SK832 'National Theatre Drum Revolve Fascias', part of drawing number W. 7065 showing the mimic Revolve control desk and a design specification 'Drum Revolve Digital Control System. The original card folder has been disposed of. '4 Drum Revolve Jun 74-Dec 76' was written on the front, and '904/5B1 4 file opened 1-6-74 Drum Revolve.' was written on the spine. |