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Portico

Portico is a chemistry 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 Portico rather than just read about it. In short: A portico is a porch leading to the entrance of a building, or extended as a colonnade, with a roof structure over a walkway, supported by columns or enclosed by walls. This idea was widely used in ancient Greece and has influenced many cultures, including most Western cultures.

Portico — main illustration
Portico — illustration

Key takeaways

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

Reference excerpt

A portico is a porch leading to the entrance of a building, or extended as a colonnade, with a roof structure over a walkway, supported by columns or enclosed by walls. This idea was widely used in ancient Greece and has influenced many cultures, including most Western cultures. Porticos are sometimes topped with pediments. Palladio was a pioneer of using temple-fronts for secular buildings. In the UK, the temple-front applied to The Vyne, Hampshire, was the first portico applied to an English country house. A pronaos (UK: or US: ) is the inner area of the portico of a Greek or Roman temple, situated between the portico's colonnade or walls and the entrance to the cella, or shrine. Roman temples commonly had an open pronaos, usually with only columns and no walls, and the pronaos could be as long as the cella. The word pronaos (πρόναος) is Greek for "before a temple". In Latin, a pronaos is also referred to as an anticum or prodomus. The pronaos of a Greek and Roman temple is typically topped with a pediment.

Types The different variants of porticos are named by the number of columns they have. The "style" suffix comes from the Greek στῦλος, "column". In Greek and Roman architecture, the pronaos of a temple is typically topped with a pediment.

Tetrastyle

The tetrastyle has four columns; it was commonly employed by the Greeks and the Etruscans for small structures such as public buildings and amphiprostyles. The Romans favoured the four columned portico for their pseudoperipteral temples like the Temple of Portunus, and for amphiprostyle temples such as the Temple of Venus and Roma, and for the prostyle entrance porticos of large public buildings like the Basilica of Maxentius and Constantine. Roman provincial capitals also manifested tetrastyle construction, such as the Capitoline Temple in Volubilis. The North Portico of the White House is perhaps the most notable four-columned portico in the United States.

Hexastyle Hexastyle buildings had six columns and were the standard façade in canonical Greek Doric architecture between the archaic period 600–550 BCE up to the Age of Pericles 450–430 BCE.

Greek hexastyle

Some well-known examples of classical Doric hexastyle Greek temples:

The group at Paestum comprising the Temple of Hera (c. 550 BCE), the Temple of Apollo (c. 450 BCE), the first Temple of Athena ("Basilica") (c. 500 BCE) and the second Temple of Hera (460–440 BCE) The Temple of Aphaea at Aegina c. 495 BCE Temple E at Selinus (465–450 BCE) dedicated to Hera The Temple of Zeus at Olympia, now a ruin Temple F or the so-called "Temple of Concordia" at Agrigentum (c. 430 BCE), one of the best-preserved classical Greek temples, retaining almost all of its peristyle and entablature The "unfinished temple" at Segesta (c. 430 BCE) The Temple of Hephaestus below the Acropolis at Athens, long known as the "Theseum" (449–444 BCE), also one of the most intact Greek temples surviving from antiquity The Temple of Poseidon on Cape Sunium (c. 449 BCE) Hexastyle was also applied to Ionic temples, such as the prostyle porch of the sanctuary of Athena on the Erechtheum, at the Acropolis of Athens.

Roman hexastyle With the colonization by the Greeks of Southern Italy, hexastyle was adopted by the Etruscans and subsequently acquired by the ancient Romans. Roman taste favoured narrow pseudoperipteral and amphiprostyle buildings with tall columns, raised on podiums for the added pomp and grandeur conferred by considerable height. The Maison Carrée at Nîmes, France, is the best-preserved Roman hexastyle temple surviving from antiquity.

Octastyle

Octastyle buildings had eight columns; they were considerably rarer than the hexastyle ones in the classical Greek architectural canon. The best-known octastyle buildings surviving from antiquity are the Parthenon in Athens, built during the Age of Pericles (450–430 BCE), and the Pantheon in Rome (125 CE). The destroyed Temple of Divus Augustus in Rome, the centre of the Augustan cult, is shown on Roman coins of the 2nd century CE as having been built in octastyle.

Decastyle The decastyle has ten columns; as in the temple of Apollo Didymaeus at Miletus, and the portico of University College London. The only known Roman decastyle portico is on the Temple of Venus and Roma, built by Hadrian in about 130 CE.

Gallery

See also

Citations

General and cited references "Greek architecture". Encyclopædia Britannica. 1968. Nünnerich-Asmus, Annette (1994). Basilika und Portikus. Die Architektur der Säulenhallen als Ausdruck gewandelter Urbanität in später Republik und früher Kaiserzeit [Basilica and Portico. The architecture of colonnaded halls as an expression of changing urbanity in the late Republic and early Imperial period]. Cologne: Böhlau, ISBN 3-412-09593-1. Stierlin, Henri (2004). Angelika Taschen (ed.). Greece: From Mycenae to the Parthenon. Cologne: Taschen. ISBN 3-8228-1225-0. Stierlin, Henri (2002). Silvia Kinkle (ed.). The Roman Empire: From the Etruscans to the Decline of the Roman Empire. Cologne: Taschen. ISBN 3-8228-1778-3.

External links

Illustrations

Portico: The portico of Croome Court in Croome D'Abitot (England)
The portico of Croome Court in Croome D'Abitot (England)
Portico: Temple diagram with location of the pronaos highlighted
Temple diagram with location of the pronaos highlighted
Portico: Temple of Portunus in Rome, with its tetrastyle portico of four Ionic columns
Temple of Portunus in Rome, with its tetrastyle portico of four Ionic columns
Portico: The hexastyle Temple of Concord at Agrigentum (c. 430 BCE)
The hexastyle Temple of Concord at Agrigentum (c. 430 BCE)
Portico: The western side of the octastyle Parthenon in Athens
The western side of the octastyle Parthenon in Athens

Worked examples

Example 1 — a first encounter with Portico

Start with the simplest possible case. Write down what Portico claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Portico 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 Portico 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 Portico

In research
Portico appears in chemistry 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 Portico 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
Portico is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ancient Roman architectural elements, Architectural elements, Columns and entablature, so understanding it makes those chapters shorter.
In everyday life
Look for Portico 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 Portico in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Portico 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 Portico out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Portico in simple terms?

A portico is a porch leading to the entrance of a building, or extended as a colonnade, with a roof structure over a walkway, supported by columns or enclosed by walls. This idea was widely used in ancient Greece and has influenced many cultures, including most Western cultures.

Why does Portico matter?

Because it connects several chemistry 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 Portico?

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 Portico.

Tags

  • Ancient Roman architectural elements
  • Architectural elements
  • Columns and entablature
  • Porticos

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