What is the minimum seating spacing required in a cinema?

The minimum back-to-back distance between rows of seats should be 850 mm, with a clear unobstructed space of at least 300 mm between the back of one seat and the front of the seat immediately behind it.

What are the rules regarding gangways (aisles)?

Gangways must be at least 1200 mm wide and should not have steps unless the gradient exceeds 1 in 10. They must be maintained clear of any obstructions.

How many exits are required for a cinema building?

Exit requirements are based on seating capacity, but generally, no exit door should be less than 1500 mm in width, and outward-opening panic bars must be provided.

What is the minimum distance from the screen to the front row?

The distance should generally not be less than the width of the screen, and the angle of elevation from the front row to the top edge of the screen should not exceed 35 degrees to prevent neck strain.

IS 4878

: 1986

Byelaws for the construction of cinema buildings

CurrentSpecializedGuidelinesBIMArchitectural · Planning, Housing and Pre-fabricated Construction

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This standard lays down the byelaws and spatial planning requirements for the construction of cinema buildings. It covers essential parameters regarding site selection, seating configurations, gangways, exits, fire safety provisions for projection rooms, and sanitary accommodations to ensure public safety and comfort.

Byelaws for the construction of cinema buildings

Quick Reference Values

minimum seat width450 mm (exclusive of armrests)

minimum back to back seating distance850 mm

minimum clear space between rows300 mm

minimum gangway width1200 mm

minimum exit door width1500 mm

maximum angle of elevation to screen35 degrees

Practical Notes

Always cross-reference this code with local state or municipal cinema rules, as regional regulations (like the Cinematograph Act) may impose stricter requirements.

Egress design is highly critical; ensure exit widths and travel distances strictly comply with Part 4 (Fire and Life Safety) of the National Building Code (NBC).

Projection rooms must be strictly segregated with fire-resisting construction and have independent ventilation and egress routes.