Cinema is a dream. A dream that man has dreamed.
Always Dream of the painters who were trying to make works realistic, so figures of their paintings would seem alive. Dream of cartoonists who have tried to animate their characters. Dream of writers who have projected in their minds images of their stories. The dream of us, every day, when we think of our past, or future, to what we want to happen in our lives.
Before planning , bring in a cinema technology firm for advice .
Film projection : firm separation materials are no longer required for the projection room will safety film . Projectionists operate several projectors; the projection room is no longer continuously used workplace for staff . 1m of space behind the projector and at the operating side, 2.80m high , ventilation , noise insulation to the auditorium side. Projection rooms may be combined for several auditoriums .
Film widths of 16 mm,35 mm and 70 mm . The center of the projected beam should not deviated more than 5 degree horizontally or vertically from the center of the screen , or it should be deflected via a deflection mirror .
Screen format for the same screen height
Screen formats for the screen width
The lower edge of the projection screen should be at least 1.20m above the floor .
The viewing angle from the first row of seats to the center of the picture should not exceed 30 degree .
The floor gradient is achieved by an inclination of up to 10%or by use of steps with maximum step height of 16 cm and with aisle widths of 1.20 m .
Neighboring auditoriums should be separated with partitioning walls of approximately85db
Acoustic deflecting surfaces on the ceiling with low acoustic delay difference time .
The reverberation time can increase with increasing room volume decreases from 0.8-0.2 seconds from low to high frequencies – p.486
The rear wall behind the last row of seats should be sound absorbent to prevent echo .
The loudspeakers should be distributed around the auditorium so that the volume difference between the first and last row of seats does not exceed 4 dB .
Permitted noise level
Permitted reverberation time depending on frequency
Reverberation time with respect to room volume
Spacing and seating rows
Boxes max . 10 looses chairs ; Min 0.65 m2 /person floor area
For 70 mm film 6- channel magnetic sound ,the additional speaker combination is behind the screen.
In he case of BTX, there is a sound absorption wall behind the screen according to the lucas film system into which the loudspeaker combination is built.
Access roads and through fares Spacing within building
Car parking space: normally one per 5-10 spectators
27 projection rooms with 7500 seats (150 and 700 per room ) and screens from 12 m x 8 m up to 29 m x 10 m
Drive in cinema
The size is limited by ramps and numbers of car (max 1000-1300) which still permits a good view.
Normal size is 450-500 cars.
Ticket booths: one booth for 300 vehicles , two for 600, three for 800,and four for 1000 vehicles.
The screen size varies according to the number of vehicles, 14.50m x 11.30m for
650 cars; 17.0 m x 13.0 m for 950 cars .
Fan – shaped drive-in-cinema with inclined ramps and low projection cabin which only take up two rows
Ramp arrangement and dimensions; elevations can be different according to screen picture height
Double cinema (one projection room for both screens) creates the option of having half-time offset starting time; all other rooms (ticket offices, bar , toilets etc.) are shared.
Ramps are inclined in curves so that the front of each vehicle is raised providing even the rear seat
passenger with a good view of the screen over the roofs of the front row of cars .
The projection building is usually centrally located at 100 m from the screen .
STAIR , RAMP & LIFT
SOURCE :- NEUFERT