Auditorium
Auditoriums are meant for presentations, conferences, training sessions, and other corporate or educational events. They can typically obtain between 20 to 100 people (while larger spaces facilitating more than that are considered a hall or stadium).
At a glance
45 × 50 cm
Chair
60–120 cm
Projection Screen
29 × 35 to 62 × 50 cm
Projector
35 × 46 to 50 × 60 cm
Podium
Dimensions
Standard sizes for the furniture and fixtures of this room.
Chair Dimensions
There are many variations of auditorium chairs. A minimal chair would be 45x50 cm / 17.7"x17.7", while a spacious one is typically 60x60 cm / 23.6"x23.6" and sometimes includes a small table connected to it for taking notes.
Projection Screen Dimensions
A projector screen size typically ranges from 60-120 cm / 23.6"-47.2", with the most common aspect ratio of 16:9 (widescreen) for a good viewing experience. These sizes can vary depending on specific viewing requirements, room layout, and individual preferences.
Projector Dimensions
A projector displays content on large screens and provides high-quality visibility to an audience. Projector dimensions and typologies vary widely, yet a typical range of sizes would be between 29x35 cm and 62x50 cm / 11.4"x13.8" and 24.4"x19.7".
Podium Dimensions
The podium is meant to enhance the presentation experience both for the presenter and the audience. Podiums are available in different sizes, while standard dimensions are around 35x46 cm to 50x60 cm / 13.8"-18.1" to 19.7"x23.6".
Stage Dimensions
The stage of an auditorium varies depending on the size of the total space and the character of events taking place in it. The room's length typically determines the length of the stage, while the minimum width recommended is 150 cm / 59.1", which allows standing and moving around comfortably while addressing the audience.
Rules of thumb
Clearances and spacing that keep the room comfortable to use.
Seating Clearance
When placing chairs in an auditorium, note that:
A compact arrangement would allow for 10 cm / 3.9" between chairs & 45 cm / 17.7" clearance for leg space.
A spacious arrangement would allow for 20 cm / 7.9" between chairs & 50 cm / 19.7" clearance for leg space.
Aisle & Row Circulation
The circulation around seats should be sufficient to allow people to walk comfortably without obstructing others.
Allow for a minimum aisle width of 90 cm / 35.4" between seating groups and 45-50 cm / 17.7"-19.7" between chair rows.
A wheelchair will occupy two chair spaces and should be placed in the auditorium's front row.
The minimal space for circulation in front of the stage is 150 cm / 59.1".
Viewing Distance Between Screen To Seating
The approximate viewing distance between a screen and an audience can be calculated by multiplying the screen diagonal by 150 cm / 59.1". This distance would provide a comfortable and immersive viewing experience.
Projector Distance From Screen
A projector in an auditorium is vital to display content to a large audience.
A projector 'throw ratio' can vary from 1.13:1 to 2:1.
To calculate the distance needed between the projector and the screen, multiply the screen width by the projector's throw ratio.
Safety Exits
Multiple exits are mandatory for spaces where many people gather to ensure a safe escape and alternative evacuation routes during an emergency.
Note that the number and placement of exits depend on the size and layout of the auditorium and local building codes and regulations; follow those closely or consult an expert to get them right! A general benchmark is:
For a 10-20 person auditorium, it is recommended to have at least two exits.
For a 50-person auditorium, it is recommended to have at least three exits.
For a 100-person auditorium, it is recommended to have at least four exits.
Layout examples
Proven arrangements to open in Rayon and adapt to your project.
Round Seating Auditorium
Auditoriums are used for training sessions, workshops, seminars, and other educational events. A round auditorium seating arrangement provides a comfortable viewing experience of a stage. Some benchmark dimensions for this layout typology are:
Spacing between chairs: between 45-50 cm /. 17.7"-19.7"
Circulation around seats: between 90 -150 cm / 35.4"-59/1".
A wheelchair is equivalent to the space of two chairs.
Rectangle Seating Auditorium
A rectangular 30-seat auditorium suits small organizations or departments within larger companies and is the space where they can hold presentations, training sessions, or internal company meetings. Some benchmark dimensions for this layout typology are:
Spacing between chairs: between 45-50 cm /. 17.7"-19.7"
Circulation around seats: between 90 -150 cm / 35.4"-59/1".
A wheelchair is equivalent to the space of two chairs.
Multi-Aisle Rectangle Seating
Fifty-seat auditoriums require a multi-aisle arrangement and are commonly found in mid-sized companies or organizations. They are suitable for presentations, conferences, or seminars. Some benchmark dimensions for this layout typology are:
Spacing between chairs: between 45-50 cm /. 17.7"-19.7"
Circulation around seats: between 90 -150 cm / 35.4"-59/1".
A wheelchair is equivalent to the space of two chairs.
100 Seat Auditorium
Auditoriums for 100 people are suitable for large gatherings. These auditoriums can host major company-wide events, conferences, product launches, or industry conventions. Some benchmark dimensions for this layout typology are:
Spacing between chairs: between 45-50 cm /. 17.7"-19.7"
Circulation around seats: between 90 -150 cm / 35.4"-59/1".
A wheelchair is equivalent to the space of two chairs.
