Auditorium design architectural regulations and thumb rule proportions.pptx

Architectural details for auditorium design

1. Compiled by – Ar. Ruturaj Kulkarni M.Arch Sustainable Design AUDITORIUM DESIGN

2. Function of Auditorium – A column less obstruction free area where an audible performance can be performed. What parameters affect auditorium design – Audibility Visibility User Comfort Required capacity Services to be provided Type of performance Structure and material About Auditoriums

3. Capacity finalization Space requirement calculation Shape finalization Parking provisions Outdoor spaces and connectivity Circulation Approach to Auditorium design

4. Number of occupants is utmost important criteria of an Auditorium. It decides the space requirements for, area division for seating, lobby, toilets, circulation and Parking etc It also decides services requirements like HVAC, Fire safety, Acoustics, Water supply, Electric requirements, Sewage and sanitation, Building automation etc Balcony seating shall be 1/3 to 1/4 th of total seating in auditorium Capacity Decision

5. The floor area of hall including gangways should be ranging from 0.6 to 0.9 sqm per person. Example - Capacity 1000 people Area required for seating = 1000 x 0.9 = 900 sqm approx Balcony – Should be 1/3 to 1/4 th of total seating capacity. Seating for balcony – 1000 x ¼ = 250 Area required = 250 x 0.9 = 225 sqm approx Space requirement - Seating design

6. Drama, Dance, Lecture, Speech One side throw, less reverberation, Less echo surface, Maximum visibility, Activity separation for public and performer, One side service control Shape finalization Shape of an auditorium depends on types of performance Fan shape

7. Folk arts, speeches, gatherings etc One side throw, medium reverberation, Less echo surface, Maximum visibility, Activity separation for public and performer, multi side service control Shape finalization Shape of an auditorium depends on types of performance Spreader shape

8. Singing and music concerts all side throw, maximum reverberation, optimum echo surface, Maximum visibility, Activity inclusion for public and performer, multi side service control Shape finalization Shape of an auditorium depends on types of performance All side seating, round shape

9. Stage is most heavily loaded area in an auditorium in terms of services. It consists of Performance area Back stage circulation Side storage and services control Green rooms Toilets Storage area Loading and unloading platform etc Proportions for stage design are as follows Space requirement - Stage design

10. Proscenium i.e. Front opening size of stage depends upon depth of house. For play theatres - House depth is kept maximum 24 mtr (as visual expressions become un recognizable beyond that) For opera theatres – House depth is kept max 32 mtr Rear walkway shall be minimum 1.5 mtr wide Side walkways shall not be less than 2 mtr wide Vision / entry screen arranged at 1.5 - 2 mtr apart Sizing of stage area

11. Depth of house

12. Seating Geometry

13. Seating Geometry

14. Visual focus field

15. Seating design

16. 4 to 6 mtr 2 to 3 mtr 1.5 mtr

17. Balcony design Changing room catwalk Stage Balcony Vestibule Orchestra pit seating

18. Waiting lobby shall be considered as 0.5 sqm area per person. Total maximum occupancy of waiting lobby shall be considered as 25% to 40 % of seating. Toilets for users shall be designed as per NBC guidelines Circulation space of 15% shall be added in lobby area. Waiting lobby

19. Capacity of Air conditioning decided as per occupancy HEPA filters are mandatory in covid scenario Ground floor Supply and return air openings and ducts are only located below balcony. AHU is located on every floor in a way that circulation duct length is minimized. In most of the cases lobby is not air conditioned. Split AC can be applied to office area, Special green rooms etc Services for Auditorium - HVAC

20. AHU AHU inlet Extraction

21. AC DUCTING PLAN - Balgandharv OUTLET DIFFUSER (GROUND FLOOR) DIFFUSER (BALCONY LEVEL) AHU

22. Passive sound projection - Use of natural sound force and acoustic treatments Active sound reinforcement - Use of speakers for enhancement Absorbents in auditorium – Seating, Occupants, Carpeting, Soft / Perforated surface cladding or ceiling Reflectors in auditorium – Metallic finishes, Structural elements, Uncarpeted floor, Doors etc Different types of absorbents are used for different frequencies. Acoustical material to be standardised for fire rating and aeisthetics ` Acoustic Treatment for Auditorium

23. Stage Acoustics – Requires high reflection, Least absorption and optimum reverberation Sound foci and dead spot to be avoided Use of angular reflection to reach the farthest seat Acoustic Treatment for Auditorium

24. Echo formation due to distance increment and sound delay

25. Stage lighting – Specialized lights, required separate electric connection, Large luminaries, Mobile and remote controlled, Requires mounting , High heat output of lamps (direct lighting system is applied) Seating lighting – Divided in ceiling lights and foot lights. Lighting at eye level is strictly avoided, small luminary , distant spacing to assure equal lighting, Low heat output per lamp, but combined greater output, Dimmable lighting, (direct and indirect lighting system is used) Lighting system

26. Lobby lighting - Requires high lux levels, Ceiling lighting with direct lighting system, Inclusion of maximum daylight is appreciated Back stage – Backstage requires high lux level lighting, direct lighting system Green room lighting – Specialized task lighting with high lux level for makeup and such tasks Lighting system

27. Guiding pathway lighting with pole lights and foot lighting shall be provided from exit to parking. Parking must have high lux level direct lighting system Flood lamps can be used for aesthetic and elevation surface treatment. It should not cause light pollution for surrounding environment . Separate control system shall be provided for the same Parking and elevation Lighting

28. Transformer shall be located on boundary line of property with access from outside. Distribution panel room shall be created outdoor providing separate connections to 1. Fire fighting services 2. Air conditioning and heavy load equipments Outdoor lighting system Electric supply to auditorium house Electrical Services – Campus level

29. Separate electrical control rooms shall be provided for stage and rest of the house MCB shall be provided for different parts of floor area like front seating, middle seating, balcony seating etc Capping casing wiring system is most popular in such design Specialized under floor wiring or ceiling wiring is required in some cases Electrical Services – Auditorium

30. Control room Control room

31. Fire fighting services

32. Water storage capacity of the building shall follow rules provided in NBC to assure per person water supply requirement As per requirement, separate water tanks shall be constructed for lobby with toilets and backstage area with toilets. Additional water tank at different locations shall be provided for fire fighting provisions. Wet and dry riser systems can be adopted as per situational context. Water supply system

33. HVAC – Ducting layout being obstruction to beam, false ceiling and wall Electric wiring and lighting through floor and ceiling Track light and flood light fixing on stage with lighting truss located parallel to proscenium Water supply and sewage layout through wall, ceiling and flooring How services affects design

34. How services affect design Gaps between show wall and structure

35. Controlled entry and exit points No reverse circulation shall be allowed Lobby for intermission waiting shall not be accessed without control Waiting for next show shall not be disturbed by exit crowd Vip access shall be provided directly to front row and stage without public interruption Service rout and loading unloading shall not disturb regular movement of auditorium Circulation

36. Fire safety sensors Occupancy sensors Water pressure system Air change and ventilation speed management Emergency alarm and management sensors Lighting sensors CCTV and security management sensors Building automation in Auditorium

37. Use of solar Photovoltaic Waste water recycling for gardening and washing Use of building automation for energy conservation Use of optimized HVAC system to conserve energy Optimized building schedule planning Xeriscaping and use of native trees for water conservation Compost plants for garbage recycling Sustainability aspect in auditorium

38. Auditorium is building of many aspects which needs to go hand in hand. A perfect planning can create a marvel but in today's context just a marvel is not enough. A sustainable plan catering to future needs becomes eminent. It must consist parameters of socio cultural aspect and planning with respect to surrounding urban context. Conclusion