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Modulor

Modulor is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Modulor rather than just read about it. In short: The Modulor is an anthropometric scale of proportions devised by the Swiss-born French architect Le Corbusier (1887–1965). It was developed as a visual bridge between two incompatible scales, the Imperial and the metric systems.

Modulor — main illustration
Modulor — illustration

Key takeaways

  • Modulor belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Modulor to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Modulor from memory before moving on to harder problems.

Reference excerpt

The Modulor is an anthropometric scale of proportions devised by the Swiss-born French architect Le Corbusier (1887–1965). It was developed as a visual bridge between two incompatible scales, the Imperial and the metric systems. It is based on the height of a man with his arm raised. The Modulor deemed the standard human height to be 1.83 m (6 ft 0 in), excluding feminine measures. The dimensions were refined with overall height of raised arm set at 2.26 m (7 ft 5 in). It was used as a system to set out a number of Le Corbusier's buildings and was later codified into two books.

History Le Corbusier developed the Modulor in the long tradition of Vitruvius, Leonardo da Vinci's Vitruvian Man, the work of Leon Battista Alberti, and other attempts to discover mathematical proportions in the human body and then to use that knowledge to improve both the appearance and function of architecture. The system is inspired by but does not exactly correspond to human measurements, and it also draws inspiration from the Fibonacci numbers and the golden ratio. Le Corbusier described it as a "range of harmonious measurements to suit the human scale, universally applicable to architecture and to mechanical things". With the Modulor, Le Corbusier sought to introduce a scale of visual measures that would unite two virtually incompatible systems: the Anglo-Saxon foot and inch and the international metric system. Whilst he was intrigued by ancient civilisations who used measuring systems linked to the human body: elbow (cubit), finger (digit), thumb (inch) etc., he was troubled by the metre as a measure that was a forty-millionth part of the meridian of the earth. In 1943, in response to the French National Organisation for Standardisation's (AFNOR) requirement for standardising all the objects involved in the construction process, Le Corbusier asked an apprentice to consider a scale based upon a man with his arm raised to 2.20 m in height. The result, in August 1943 was the first graphical representation of the derivation of the scale. This was refined after a visit to the Dean of the Faculty of Sciences in Sorbonne on 7 February 1945 which resulted in the inclusion of a golden section into the representation. Whilst initially the Modulor Man's height was based on an average French man's height of 1.75 metres (5 ft 9 in) it was changed to 1.83 m in 1946 because "in English detective novels, the good-looking men, such as policemen, are always six feet tall!". The dimensions were refined to give round numbers and the overall height of the raised arm was set at 2.26 m (7 ft 5 in). Of the works leading to the creation of the Modulor, Robin Evans notes that the female body "was only belatedly considered and rejected as a source of proportional harmony".

Promotion On 10 January 1946 during a visit to New York, Le Corbusier met with Henry J. Kaiser, an American industrialist whose Kaiser Shipyard had built Liberty ships during World War II. Kaiser's project was to build ten thousand new houses a day, but he had changed his mind and decided to build cars instead. During the interview, Le Corbusier sympathised with Kaiser's problems of coordinating the adoption of equipment between the American and British armies because of the differences in units of length; and promoted his own harmonious scale. On the same trip he met with David E. Lilienthal of the Tennessee Valley Authority to promote the use of his harmonious scale on further civil engineering projects. He also applied the principle of the Modulor to the efficient design of distribution crates in post war France.

Graphic representation

The graphic representation of the Modulor, a stylised human figure with one arm raised, stands next to two vertical measurements, a red series based on the figure's navel height (1.08 m (3 ft 7 in) in the original version, (1.13 m (3 ft 8 in) in the revised version) and segmented according to the Golden ratio and a blue series based on the figure's entire height, double the navel height ((2.16 m (7 ft 1 in) in the original version, (2.26 m (7 ft 5 in) in the revised), segmented similarly. A spiral, graphically developed between the red and blue segments, seems to mimic the volume of the human figure. The Modulor 2 was drawn by André Maissonier and Justino Serralta.

Practical application

Le Corbusier used his Modulor scale in the design of many buildings, including:

Unité d'Habitation à Marseille In his first book on the subject The Modulor, Le Corbusier has a chapter on the use of the modular in the Unité d'Habitation. The modular governs: the plan, section and elevations; the brise-soleil; the roof; the supporting columns and the plan and section of the apartments. It was also used for the dimensions of the commemorative stone laid on 14 October 1947. A version of the Modulor Man was cast in concrete near the entrance.

Church of Sainte Marie de La Tourette In the Church of Sainte Marie de La Tourette Le Corbusier floors the majority of the church in pale concrete panels set to Modulor dimensions. Also, the engineer Iannis Xenakis applied the Modulor system to the design of the exterior vertical ventilators or "ondulatoires".

Carpenter Center for the Visual Arts In the Carpenter Center the Modulor system was used for the brise-soleil distances, the floor to floor heights, the bay distances and the column thicknesses. Le Corbusier conceived that the dimensioning of the entrance ramp would be "visible essay on the mathematics of the human body".

Unite d'Habitation a Berlin.

In this image of the Modulor in Berlin, there are several messages cast in the facade:

The typical apartment is designed for four people. (Note 4 people in bed on the right). The patterns of paint on the side of the balconies is explained by diagonal line. Brise Soleil is sized by the height of the Modulor man. The room height is calculated by the Modulor.

Publication Le Corbusier published Le Modulor in 1948, followed by Modulor 2 in 1955. These works were first published in English as The Modulor in 1954 and Modulor 2 (Let the User Speak Next) in 1958. The 2004 reprinted box set including both books was printed in a square format using the Modulor with the series twenty seven to one hundred and forty reduced in size to one tenth.

Commemorative usage

A picture of the Modulor appears on the eighth banknote series on the 10 CHF Swiss banknote dedicated to Le Corbusier.

… excerpt ends here. Continue reading the full article.

Illustrations

Modulor: Commemorative Swiss coin showing the modulor.
Commemorative Swiss coin showing the modulor.
Modulor: Modern recreation of the cover of Le Corbusier's book on the Modulor
Modern recreation of the cover of Le Corbusier's book on the Modulor
Modulor: Le Corbusier's Modulor generated in Python. For full resolution see the file on Wikimedia Commons
Le Corbusier's Modulor generated in Python. For full resolution see the file on Wikimedia Commons
Modulor: Modulor measurements of humans in various positions
Modulor measurements of humans in various positions
Modulor: 3D printed Le Corbusier Modulor found on Thingiverse
3D printed Le Corbusier Modulor found on Thingiverse

Worked examples

Example 1 — a first encounter with Modulor

Start with the simplest possible case. Write down what Modulor claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Modulor before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Modulor ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Modulor

In research
Modulor appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Modulor in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Modulor is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1943 introductions, 1948 non-fiction books, Architectural design, so understanding it makes those chapters shorter.
In everyday life
Look for Modulor outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Modulor in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Modulor means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Modulor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Modulor in simple terms?

The Modulor is an anthropometric scale of proportions devised by the Swiss-born French architect Le Corbusier (1887–1965). It was developed as a visual bridge between two incompatible scales, the Imperial and the metric systems.

Why does Modulor matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Modulor?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Modulor.

Tags

  • 1943 introductions
  • 1948 non-fiction books
  • Architectural design
  • Architectural theory
  • Architecture books
  • Birkhäuser books
  • French non-fiction books
  • Le Corbusier
  • Units of length

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