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Auditorium

Everything about designing a 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).

When designing an auditorium, it's essential to consider factors such as accessibility, comfort, and compliance with building codes and regulations - that vary according to local guidelines. Make sure to look into those or consult with an expert to get your auditorium layout right!
Dimensions 📏
Rules Of Thumb 👍
Layout Examples ✏️
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  • Chair Dimensions
  • Projection Screen Dimensions
  • Projector Dimensions
  • Podium Dimensions
  • Stage Dimensions

Chair Dimensions

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There are many variations of auditorium chairs. A minimal chair would be 45x50~ cm, while a spacious one is typically 60x60 cm and sometimes includes a small table connected to it for taking notes.

Projection Screen Dimensions

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A projector screen size typically ranges from 60 to 120 inches, with the most common aspect ratio of 16:9 (widescreen) for a good viewing experience. These sizes can vary depending on factors such as the specific viewing requirements, room layout, and individual preferences.

Projector Dimensions

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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 to 62x50 cm.

Podium Dimensions

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The podium is meant to enhance the presentation experience both for the presenter and the audience. Podiums are available in different sizes, while common dimensions are around 35x46 cm to 50x60 cm.

Stage Dimensions

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The stage of an auditorium varies depending on the size of the total space and the character of events taking place in it. The length of the room typically determines the length of the stage, while the minimum width recommended is 150 cm, which allows standing and moving around comfortably while addressing the audience.
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  • Seating Clearance
  • Aisle & Row Circulation
  • Viewing Distance Between Screen To Seating
  • Projector Distance From Screen
  • Safety Exits

Seating Clearance

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When placing chairs in an auditorium, note that:
  • A compact arrangement would allow for 10~ cm between chairs & 45 cm clearance for leg space.
  • A spacious arrangement would allow for 20~ cm between chairs & 50 cm clearance for leg space.

Aisle & Row Circulation

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  • The circulation around seats should be sufficient to allow people to walk comfortably without obstructing others. To that effect, allowing for a minimum aisle width of 90 cm between aisles and 45-50 cm between chair rows is recommended.
  • 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.

Viewing Distance Between Screen To Seating

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The approximate viewing distance between a screen and an audience can be calculated by multiplying the screen diagonal by 150 cm. This distance would provide a comfortable and immersive viewing experience.

Projector Distance From Screen

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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. This means that for each meter of image width, the projector needs to be 1.13 - 2 meters away from the screen.
  • To calculate the distance needed between the projector and the screen, multiply the screen width by the projector's throw ratio.

Safety Exits

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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 people auditorium, it is recommended to have at least two exits.
  • For a 50 people auditorium, it is recommended to have at least three exits.
  • For a 100 people auditorium, it is recommended to have at least four exits.
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  • Round Seating Auditorium
  • Rectangle Seating Auditorium
  • Multi-Aisle Rectangle Arrangement
  • 100 Seat Auditorium

Round Seating Auditorium

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Auditoriums can be used for training sessions, workshops, seminars, and other educational events. Some benchmark dimensions to keep in mind for this auditorium type are:
  • An adequate screen size would be 80"~, placed 3.15~ m from the first seating row for an ideal viewing distance.
  • The projector should be placed 354 cm from the screen.
  • Spacing between chairs can be between 45-50~ cm.
  • The circulation around seats should be a minimum of 90 cm.
  • The circulation area in front of the stage should be a minimum of 150 cm.

Rectangle Seating Auditorium

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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 to keep in mind in this case are:
  • An adequate projection screen size would be 100"~, placed 390~ cm from the first seating row for an ideal viewing distance.
  • The projector should be placed 432~ cm from the screen.
  • Spacing between chairs can be 45-50~ cm.
  • The circulation around seats should be a minimum of 90 cm.
  • A wheelchair is equivalent to the space of two chairs.

Multi-Aisle Rectangle Seating

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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 to keep in mind for this case are:
  • The circulation around seats should be a minimum of 90 cm and 150 cm in case of multiple people walking aisles.
  • Spacing between chairs can be 45-50~ cm.
  • A wheelchair is equivalent to the space of two chairs.
  • An adequate projection screen size would be 100"~, placed 390~ cm from the first seating row for an ideal viewing distance.
  • The projector should be placed 432~ cm from the screen.

100 Seat Auditorium

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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 to keep in mind for this size type of auditorium are:
  • An adequate screen size would be 120"~, placed 460~ cm from the first seating row for an ideal viewing distance.
  • The projector should be placed 532~ cm from the screen.
  • Spacing between chairs can be between 45-50~ cm.
  • The circulation around seats should be a minimum of 90 cm and 150 cm in case of multiple people walking aisles.
  • A wheelchair is equivalent to the space of two chairs.
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