A dome is a curved architectural covering with a long history and many forms. This lesson introduces the meaning of the term, the parts of a dome, and the ways builders connect a dome to the space below it.
A dome is an architectural element resembling the hollow upper half of a sphere, although real domes have many profiles and plans. Some are hemispherical, while others are pointed, flattened, bulbous, or polygonal. Because the word is used broadly, architects and engineers do not always apply it in exactly the same way.
All flashcards
What is a dome?
A curved architectural covering, often resembling the hollow upper half of a sphere. Domes may have many profiles and forms.
What do intrados and extrados mean?
The intrados is the inner surface of a dome; the extrados is its outer surface.
What is a drum?
A circular or elliptical structure that may support a dome.
How does a squinch differ from a pendentive?
A squinch bridges a corner with an arch, niche, or projecting form; a pendentive is a curved triangular section connecting a square bay to a dome’s circular base.
How do meridional and hoop forces differ in a dome?
Meridional forces run from crown to base; hoop forces run around the dome’s circumference.
Quiz questions
What best describes a dome in architectural terms?Answer: A curved covering with varied profiles, often resembling the hollow upper half of a sphere.
How is a corbelled dome typically constructed?Answer: By stacking horizontal layers that project inward until the opening closes.
What structural pattern characterizes a geodesic dome?Answer: A framework of triangles arranged in a pattern based on a polyhedron.
Which building is the best-known and best-preserved large Roman dome?Answer: The Pantheon in Rome.
What acoustic effect can a dome’s concave interior produce?Answer: It can reflect sound and produce echoes.
Based on the Wikipedia article Dome, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.