Intro to Engineering MOOC – Vaults

Course: The Art of Structural Engineering: Vaults
Length: 6 weeks, 2-3 hrs/wk
School/platform: Princeton/edX
Instructor: Maria Garlock

In this engineering course you will learn how to analyze vaults (long-span roofs) from three perspectives:
Efficiency = calculations of forces/stresses
Economy = evaluation of societal context and cost
Elegance = form/appearance based on engineering principles, not decoration
We explore iconic vaults like the Pantheon, but our main focus is on contemporary vaults built after the industrial revolution. The vaults we examine are made of different materials, such as tile, reinforced concrete, steel and glass, and were created by masterful engineers/builders like Rafael Guastavino, Anton Tedesko, Pier Luigi Nervi, Eduardo Torroja, Félix Candela, and Heinz Isler.

Let me begin with a disclaimer: This was not the right class for me to take. I was curious to learn more about the technical details of vaults, having seen some wonderful examples of structures from medieval and renaissance architecture, and this was, as advertised, a very basic introduction to the engineering of vaults. However, after a brief look at the Roman Pantheon, the course focused on concrete shells of the 20th century and more modern innovations. I lost interest quickly. Then I got sick between weeks 4 and 5, which further diminished my participation. I did end up “passing” the course, so it might be worth your while even if your particular interest is only partly covered. And I did come away with a better understanding of how vaults work, though keep in mind, I started at absolute zero.

Each week consisted of three distinct sections: a lecture series covering the historical and technical development of vault engineering, generally by focusing on one engineer who introduced a specific innovation, be it reinforced concrete or hyperparabolic shapes; a mathematical section, in PDF form, covering several equations in detail, though at a fairly simple mathematical level requiring only basic algebra; and a creative section, which invites students to post pictorial examples of some facet of the week’s material. Grading is divided fairly equally among these three sections. But don’t worry: although the material, particularly the mathematical sections (none of which go beyond basic algebra), may seem intimidating, the questions are manageable. Even though I skipped everything but the lecture sequences of weeks 5 and 6, I “passed” by a comfortable margin.

The lectures were very good, with lots of illustrative exampes, interviews with a variety of engineers and scholars, and a very step-by-step explanation of the development and construction of the technique under study.

This is part of a three-course series, with other courses covering engineering concepts of bridges and tall buildings. And again let me emphasize that although this was not the best course for my particular interests, the course was well-designed, and the series seems to be ideal for someone interested in getting a basic introduction to civil engineering.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.