Vitruvius

Little is known about Vitruvius' life. Most inferences about him are extracted from his only surviving work De Architectura. His full name is sometimes given as "Marcus Vitruvius Pollio", but both the first and last names are uncertain.^[6] Marcus Cetius Faventinus writes of "Vitruvius Polio aliique auctores"; this can be read as "Vitruvius Polio, and others" or, less likely, as "Vitruvius, Polio, and others". An inscription in Verona, which names a Lucius Vitruvius Cordo, and an inscription from Thilbilis in North Africa, which names a Marcus Vitruvius Mamurra have been suggested as evidence that Vitruvius and Mamurra (who was a military praefectus fabrum under Julius Caesar) were from the same family;^[7] or were even the same individual. Neither association, however, is borne out by De Architectura (which Vitruvius dedicated to Augustus), nor by the little that is known of Mamurra.

Vitruvius was a military engineer (praefectus fabrum), or a praefect architectus armamentarius of the apparitor status group (a branch of the Roman civil service). He is mentioned in Pliny the Elder's table of contents for Naturalis Historia (Natural History), in the heading for mosaic techniques.^[8] Frontinus refers to "Vitruvius the architect" in his late 1st-century work De aquaeductu.

Likely born a free Roman citizen, by his own account Vitruvius served in the Roman army under Caesar with the otherwise poorly identified Marcus Aurelius, Publius Minidius and Gnaeus Cornelius. These names vary depending on the edition of De architectura. Publius Minidius is also written as Publius Numidicus and Publius Numidius, speculated as the same Publius Numisius inscribed on the Roman Theatre at Heraclea.^[9]

As an army engineer he specialized in the construction of ballista and scorpio artillery war machines for sieges. It is speculated that Vitruvius served with Caesar's chief engineer Lucius Cornelius Balbus.^[10]

The locations where he served can be reconstructed from, for example, descriptions of the building methods of various "foreign tribes". Although he describes places throughout De Architectura, he does not say he was present. His service likely included north Africa, Hispania, Gaul (including Aquitaine) and Pontus.

To place the role of Vitruvius the military engineer in context, a description of "The Prefect of the camp" or army engineer is quoted here as given by Flavius Vegetius Renatus in The Military Institutions of the Romans:

The Prefect of the camp, though inferior in rank to the [Prefect], had a post of no small importance. The position of the camp, the direction of the entrenchments, the inspection of the tents or huts of the soldiers and the baggage were comprehended in his province. His authority extended over the sick, and the physicians who had the care of them; and he regulated the expenses relative thereto. He had the charge of providing carriages, bathhouses and the proper tools for sawing and cutting wood, digging trenches, raising parapets, sinking wells and bringing water into the camp. He likewise had the care of furnishing the troops with wood and straw, as well as the rams, onagri, balistae and all the other engines of war under his direction. This post was always conferred on an officer of great skill, experience and long service, and who consequently was capable of instructing others in those branches of the profession in which he had distinguished himself.^[11]

At various locations described by Vitruvius,^[12] battles and sieges occurred. He is the only source for the siege of Larignum in 56 BC.^[13] Of the battlegrounds of the Gallic War there are references to:

• The siege and massacre of the 40,000 residents at Avaricum in 52 BC. Vercingetorix commented that "the Romans did not conquer by valour nor in the field, but by a kind of art and skill in assault, with which they [Gauls] themselves were unacquainted."^[14]
• The broken siege at Gergovia in 52 BC.
• The circumvallation and Battle of Alesia in 52 BC. The women and children of the encircled city were evicted to conserve food, and then starved to death between the opposing walls of the defenders and besiegers.
• The siege of Uxellodunum in 51 BC.

These are all sieges of large Gallic oppida. Of the sites involved in Caesar's civil war, we find the Siege of Massilia in 49 BC,^[15] the Battle of Dyrrhachium of 48 BC (modern Albania), the Battle of Pharsalus in 48 BC (Hellas – Greece), the Battle of Zela of 47 BC (modern Turkey), and the Battle of Thapsus in 46 BC in Caesar's African campaign.^[16] A legion that fits the same sequence of locations is the Legio VI Ferrata, of which ballista would be an auxiliary unit.

Mainly known for his writings, Vitruvius was himself an architect. In Roman times architecture was a broader subject than at present including the modern fields of architecture, construction management, construction engineering, chemical engineering, civil engineering, materials engineering, mechanical engineering, military engineering and urban planning;^[17] architectural engineers consider him the first of their discipline, a specialization previously known as technical architecture.

In his work describing the construction of military installations, he also commented on the miasma theory – the idea that unhealthy air from wetlands was the cause of illness, saying:

For fortified towns the following general principles are to be observed. First comes the choice of a very healthy site. Such a site will be high, neither misty nor frosty, and in a climate neither hot nor cold, but temperate; further, without marshes in the neighbourhood. For when the morning breezes blow toward the town at sunrise, if they bring with them mists from marshes and, mingled with the mist, the poisonous breath of the creatures of the marshes to be wafted into the bodies of the inhabitants, they will make the site unhealthy. Again, if the town is on the coast with southern or western exposure, it will not be healthy, because in summer the southern sky grows hot at sunrise and is fiery at noon, while a western exposure grows warm after sunrise, is hot at noon, and at evening all aglow.^[18]

Frontinus mentions Vitruvius in connection with the standard sizes of pipes:^[19] the role he is most widely respected. He is often credited as father of architectural acoustics for describing the technique of echeas placement in theaters.^[20] The only building, however, that we know Vitruvius to have worked on is one he tells us about,^[21] a basilica completed in 19 BC.^[22] It was built at Fanum Fortunae, now the modern town of Fano. The Basilica di Fano (to give the building its Italian name) has disappeared so completely that its very site is a matter of conjecture, although various attempts have been made to visualise it.^[23] The early Christian practice of converting Roman basilicae (public buildings) into cathedrals implies the basilica may be incorporated into the cathedral in Fano.

In later years the emperor Augustus, through his sister Octavia Minor, sponsored Vitruvius, entitling him with what may have been a pension to guarantee financial independence.^[3]

Whether De architectura was written by one author or is a compilation completed by subsequent librarians and copyists, remains an open question. The date of his death is unknown, which suggests that he had enjoyed only a little popularity during his lifetime.

Gerolamo Cardano, in his 1552 book De subtilitate rerum, ranks Vitruvius as one of the 12 persons whom he supposes to have excelled all men in the force of genius and invention; and would not have scrupled to have given him the first place if it could be imagined that he had delivered nothing but his own discoveries.^[24]

James Anderson's "The Constitutions of the Free-Masons" (1734), reprinted by Benjamin Franklin, describes Vitruvius as "the Father of all true Architects to this Day."^[25]

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Marcus Cetius Faventinus

Marcus Cetius Faventinus

Marcus Cetius Faventinus was a Roman author on architecture active in the late 3rd or early 4th century AD. He wrote a handbook based mainly on earlier authors, especially Vitruvius. It was intended mainly for private builders. Its original title was Artis architectonicae privatis usibus adbreviatus liber, but is now more commonly known as De diversis fabricis architectonicae. It was used by the agricultural writer Palladius and by the encyclopaedist Isidore of Seville. It was also known by Sidonius Apollinaris. There is a modern English translation with a facing Latin edition.

Numidia

Numidia

Numidia was the ancient kingdom of the Numidians located in northwest Africa, initially comprising the territory that now makes up modern-day Algeria, but later expanding across what is today known as Tunisia, Libya, and some parts of Morocco. The polity was originally divided between the Massylii in the east and the Masaesyli in the west. During the Second Punic War, Masinissa, king of the Massylii, defeated Syphax of the Masaesyli to unify Numidia into one kingdom. The kingdom began as a sovereign state and later alternated between being a Roman province and a Roman client state.

Mamurra

Mamurra

Mamurra was a Roman military officer who served under Julius Caesar.

Julius Caesar

Julius Caesar

Gaius Julius Caesar was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war, and subsequently became dictator from 49 BC until his assassination in 44 BC. He played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire.

Augustus

Augustus

Caesar Augustus, also known as Octavian, was the first Roman emperor; he reigned from 27 BC until his death in AD 14. He is known for being the founder of the Roman Principate, which is the first phase of the Roman Empire, and is considered one of the greatest leaders in human history. The reign of Augustus initiated an imperial cult as well as an era associated with imperial peace, the Pax Romana or Pax Augusta. The Roman world was largely free from large-scale conflict for more than two centuries despite continuous wars of imperial expansion on the empire's frontiers and the year-long civil war known as the "Year of the Four Emperors" over the imperial succession.

Apparitor

Apparitor

In ancient Rome, an apparitor was a civil servant whose salary was paid from the public treasury. The apparitores assisted the magistrates. There were four occupational grades (decuriae) among them. The highest-ranked were the scribae, the clerks or public notaries, followed by the lictores, lictors; viatores, messengers or summoners, that is, agents on official errands; and praecones, announcers or heralds.

Pliny the Elder

Pliny the Elder

Gaius Plinius Secundus, called Pliny the Elder, was a Roman author, naturalist, natural philosopher, and naval and army commander of the early Roman Empire, and a friend of the emperor Vespasian. He wrote the encyclopedic Naturalis Historia, which became an editorial model for encyclopedias. He spent most of his spare time studying, writing, and investigating natural and geographic phenomena in the field.

Mosaic

Mosaic

A mosaic is a pattern or image made of small regular or irregular pieces of colored stone, glass or ceramic, held in place by plaster/mortar, and covering a surface. Mosaics are often used as floor and wall decoration, and were particularly popular in the Ancient Roman world.

Frontinus

Frontinus

Sextus Julius Frontinus was a prominent Roman civil engineer, author, soldier and senator of the late 1st century AD. He was a successful general under Domitian, commanding forces in Roman Britain, and on the Rhine and Danube frontiers. A novus homo, he was consul three times. Frontinus ably discharged several important administrative duties for Nerva and Trajan. However, he is best known to the post-Classical world as an author of technical treatises, especially De aquaeductu, dealing with the aqueducts of Rome.

De aquaeductu

De aquaeductu

De aquaeductu is a two-book official report given to the emperor Nerva or Trajan on the state of the aqueducts of Rome, and was written by Sextus Julius Frontinus at the end of the 1st century AD. It is also known as De Aquis or De Aqueductibus Urbis Romae. It is the earliest official report of an investigation made by a distinguished citizen on Roman engineering works to have survived. Frontinus had been appointed Water Commissioner by the emperor Nerva in AD 96.

Roman army

Roman army

The Roman army was the armed forces deployed by the Romans throughout the duration of Ancient Rome, from the Roman Kingdom to the Roman Republic and the Roman Empire, and its medieval continuation, the Eastern Roman Empire. It is thus a term that may span approximately 2,205 years, during which the Roman armed forces underwent numerous permutations in size, composition, organisation, equipment and tactics, while conserving a core of lasting traditions.

Ballista

Ballista

The ballista, plural ballistae, sometimes called bolt thrower, was an ancient missile weapon that launched either bolts or stones at a distant target.

Roman house plan after Vitruvius

Vitruvius is the author of De architectura, libri decem, known today as The Ten Books on Architecture,^[26] a treatise written in Latin on architecture, dedicated to the emperor Augustus. In the preface of Book I, Vitruvius dedicates his writings to giving personal knowledge of the quality of buildings to the emperor. Likely Vitruvius is referring to Marcus Agrippa's campaign of public repairs and improvements. This work is the only surviving major book on architecture from classical antiquity. According to Petri Liukkonen, this text "influenced deeply from the Early Renaissance onwards artists, thinkers, and architects, among them Leon Battista Alberti (1404–1472), Leonardo da Vinci (1452–1519), and Michelangelo (1475–1564)."^[16] The next major book on architecture, Alberti's reformulation of Ten Books, was not written until 1452.

Vitruvius is famous for asserting in his book De architectura that a structure must exhibit the three qualities of firmitatis, utilitatis, venustatis – that is, stability, utility, and beauty. These are sometimes termed the Vitruvian virtues or the Vitruvian Triad. According to Vitruvius, architecture is an imitation of nature. As birds and bees built their nests, so humans constructed housing from natural materials, that gave them shelter against the elements. When perfecting this art of building, the Greeks invented the architectural orders: Doric, Ionic and Corinthian. It gave them a sense of proportion, culminating in understanding the proportions of the greatest work of art: the human body. This led Vitruvius in defining his Vitruvian Man, as drawn later by Leonardo da Vinci: the human body inscribed in the circle and the square (the fundamental geometric patterns of the cosmic order). In this book series, Vitruvius, also wrote about climate in relation to housing architecture and how to choose locations for cities.^[27][28]

Scope

Vitruvius designed and supervised the construction of this basilica in Fano (reconstruction). However, many of the other things he did would not now be considered the realm of architecture

Vitruvius is the first Roman architect to have written surviving records of his field. He himself cites older but less complete works. He was less an original thinker or creative intellect than a codifier of existing architectural practice. Roman architects practised a wide variety of disciplines; in modern terms they would also be described as landscape architects, civil engineers, military engineers, structural engineers, surveyors, artists, and craftsmen combined. Etymologically the word architect derives from Greek words meaning 'master' and 'builder'. The first of the Ten Books deals with many subjects which are now within the scope of landscape architecture.

In Book I, Chapter 1, titled The Education of the Architect, Vitruvius instructs...

1. Architecture is a science arising out of many other sciences, and adorned with much and varied learning; by the help of which a judgment is formed of those works which are the result of other arts. Practice and theory are its parents. Practice is the frequent and continued contemplation of the mode of executing any given work, or of the mere operation of the hands, for the conversion of the material in the best and readiest way. Theory is the result of that reasoning which demonstrates and explains that the material wrought has been so converted as to answer the end proposed.

2. Wherefore the mere practical architect is not able to assign sufficient reasons for the forms he adopts; and the theoretic architect also fails, grasping the shadow instead of the substance. He who is theoretic as well as practical, is therefore doubly armed; able not only to prove the propriety of his design, but equally so to carry it into execution.^[29]

He goes on to say that the architect should be versed in drawing, geometry, optics (lighting), history, philosophy, music, theatre, medicine, and law.

In Book I, Chapter 3 (The Departments of Architecture), Vitruvius divides architecture into three branches, namely; building; the construction of sundials and water clocks;^[30] and the design and use of machines in construction and warfare.^[31][32] He further divides building into public and private. Public building includes city planning, public security structures such as walls, gates and towers; the convenient placing of public facilities such as theatres, forums and markets, baths, roads and pavings; and the construction and position of shrines and temples for religious use.^[29] Later books are devoted to the understanding, design and construction of each of these.

Proportions of man

"Vitruvian Man", illustration in the edition of De architectura by Vitruvius; illustrated edition by Cesare Cesariano (1521)

Vitruvian Man by Leonardo da Vinci, an illustration of the human body inscribed in the circle and the square derived from a passage about geometry and human proportions in Vitruvius' writings

In Book III, Chapter 1, Paragraph 3, Vitruvius writes about the proportions of man:

3. Just so the parts of Temples should correspond with each other, and with the whole. The navel is naturally placed in the centre of the human body, and, if in a man lying with his face upward, and his hands and feet extended, from his navel as the centre, a circle be described, it will touch his fingers and toes. It is not alone by a circle, that the human body is thus circumscribed, as may be seen by placing it within a square. For measuring from the feet to the crown of the head, and then across the arms fully extended, we find the latter measure equal to the former; so that lines at right angles to each other, enclosing the figure, will form a square.^[33]

It was upon these writings that Renaissance engineers, architects and artists like Mariano di Jacopo Taccola, Pellegrino Prisciani and Francesco di Giorgio Martini and finally Leonardo da Vinci based the illustration of the Vitruvian Man.^[34]

Vitruvius described the human figure as being the principal source of proportion.

The drawing itself is often used as an implied symbol of the essential symmetry of the human body, and by extension, of the universe as a whole.^[35]

Lists of names given in Book VII Introduction

In the introduction to book seven, Vitruvius goes to great lengths to present why he is qualified to write De Architectura. This is the only location in the work where Vitruvius specifically addresses his personal breadth of knowledge. Similar to a modern reference section, the author's position as one who is knowledgeable and educated is established. The topics range across many fields of expertise reflecting that in Roman times as today construction is a diverse field. Vitruvius is clearly a well-read man.

In addition to providing his qualification, Vitruvius summarizes a recurring theme throughout the 10 books, a non-trivial and core contribution of his treatise beyond simply being a construction book. Vitruvius makes the point that the work of some of the most talented is unknown, while many of those of lesser talent but greater political position are famous.^[26] This theme runs through Vitruvius's ten books repeatedly – echoing an implicit prediction that he and his works will also be forgotten.

Vitruvius illustrates this point by naming what he considers the most talented individuals in history.^[26] Implicitly challenging the reader that they have never heard of some of these people, Vitruvius goes on and predicts that some of these individuals will be forgotten and their works lost, while other, less deserving political characters of history will be forever remembered with pageantry.

• List of physicists: Thales, Democritus, Anaxagoras, Xenophanes
• List of philosophers: Socrates, Plato, Aristotle, Zeno, Epicurus
• List of kings: Croesus, Alexander the Great, Darius
• On plagiarism: Aristophanes, Ptolemy I Soter, a person named Attalus
• On abusing dead authors: Zoilus Homeromastix, Ptolemy II Philadelphus
• On divergence of the visual rays: Agatharchus, Aeschylus, Democritus, Anaxagoras
• List of writers on temples: Silenus, Theodorus, Chersiphron and Metagenes, Ictinus and Carpion, Theodorus the Phocian, Hermogenes, Arcesius, Satyrus and a person named Pytheos
• List of artists: Leochares, Bryaxis, Scopas, Praxiteles, Timotheos
• List of writers on laws of symmetry: Nexaris, Theocydes, a person named Demophilus, Pollis, a person named Leonidas, Silanion, Melampus, Sarnacus, Euphranor
• List of writers on machinery: Diades of Pella, Archytas, Archimedes, Ctesibius, Nymphodorus, Philo of Byzantium, Diphilus, Democles, Charias, Polyidus of Thessaly, Pyrrus, Agesistratus
• List of writers on architecture: Fuficius, Terentius Varro, Publius Septimius (writer)
• List of architects: Antistates, Callaeschrus, Antimachides, Pormus, Cossutius
• List of greatest temple architects: Chersiphron of Gnosus, Metagenes, Demetrius, Paeonius the Milesian, Ephesian Daphnis, Ictinus, Philo, Cossutius, Gaius Mucianus

Rediscovery

Battle of Thapsus as depicted in an engraving after Andrea Palladio

The interior of the Pantheon (from an 18th-century painting by Panini). Although built after Vitruvius' death, its excellent state of preservation makes it of great importance to those interested in Vitruvian architecture

Vitruvius' De architectura was "rediscovered" in 1414 by the Florentine humanist Poggio Bracciolini in the library of Saint Gall Abbey. Leon Battista Alberti (1404–1472) publicised it in his seminal treatise on architecture, De re aedificatoria (c. 1450). The first known Latin printed edition was by Fra Giovanni Sulpitius in Rome, 1486.^[36] Translations followed in Italian (Cesare Cesariano, 1521), French (Jean Martin, 1547^[37]), English, German (Walther H. Ryff, 1543) and Spanish and several other languages. The original illustrations had been lost and the first illustrated edition was published in Venice in 1511 by Fra Giovanni Giocondo, with woodcut illustrations based on descriptions in the text.^[38] Later in the 16th-century Andrea Palladio provided illustrations for Daniele Barbaro's commentary on Vitruvius, published in Italian and Latin versions. The most famous illustration is probably Da Vinci's Vitruvian Man.

The surviving ruins of Roman antiquity, the Roman Forum, temples, theatres, triumphal arches and their reliefs and statues offered visual examples of the descriptions in the Vitruvian text. Printed and illustrated editions of De Architectura inspired Renaissance, Baroque and Neoclassical architecture. Filippo Brunelleschi, for example, invented a new type of hoist to lift the large stones for the dome of the cathedral in Florence and was inspired by De Architectura as well as surviving Roman monuments such as the Pantheon and the Baths of Diocletian.

Notable editions

De architectura, 1543

Latin

• 1495–1496 De architectura (in Latin). Venezia: Cristoforo Pensi.
• 1543 De architectura (in Latin). Strasbourg: Georg Messerschmidt.
• 1800 Augustus Rode, Berlin^[39]
• 1857 Teubner Edition by Valentin Rose
• 1899 Teubner Edition
• 1912 Teubner edition at The Latin Library^[40]
• Bill Thayer, transcription of the 1912 Teubner Edition^[41]

Italian

• Cesare Cesariano, 1521, Como, Italy, includes illustrations by Cesare Cesariano
• Danielle Barbaro, includes illustration by Andrea Palladio

French

• Jean Martin, 1547^[42]
• Claude Perrault, 1673^[43]
• Auguste Choisy, 1909

English

• Henry Wotton, 1624
• Joseph Gwilt, 1826
• Bill Thayer transcription of the Gwilt 1826 Edition^[29]
• Morris H. Morgan, with illustrations prepared by Herbert Langford Warren, 1914, Harvard University Press^[44]
• Frank Granger, Loeb Edition, 1931^[45]
• Ingrid Rowland, 2001^[46]
• Thomas Gordon Smith, The Monacelli Press (5 January 2004)^[47]

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De architectura

De architectura

De architectura is a treatise on architecture written by the Roman architect and military engineer Marcus Vitruvius Pollio and dedicated to his patron, the emperor Caesar Augustus, as a guide for building projects. As the only treatise on architecture to survive from antiquity, it has been regarded since the Renaissance as the first book on architectural theory, as well as a major source on the canon of classical architecture. It contains a variety of information on Greek and Roman buildings, as well as prescriptions for the planning and design of military camps, cities, and structures both large and small. Since Vitruvius published before the development of cross vaulting, domes, concrete, and other innovations associated with Imperial Roman architecture, his ten books give no information on these hallmarks of Roman building design and technology.

Latin

Latin

Latin is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area around present-day Rome, but through the power of the Roman Republic it became the dominant language in the Italian region and subsequently throughout the Roman Empire. Even after the fall of Western Rome, Latin remained the common language of international communication, science, scholarship and academia in Europe until well into the 18th century, when other regional vernaculars supplanted it in common academic and political usage. For most of the time it was used, it would be considered a "dead language" in the modern linguistic definition; that is, it lacked native speakers, despite being used extensively and actively.

Classical antiquity

Classical antiquity

Classical antiquity is the period of cultural history between the 8th century BC and the 5th century AD centred on the Mediterranean Sea, comprising the interlocking civilizations of ancient Greece and ancient Rome known as the Greco-Roman world. It is the period in which both Greek and Roman societies flourished and wielded huge influence throughout much of Europe, North Africa, and Western Asia.

Leon Battista Alberti

Leon Battista Alberti

Leon Battista Alberti was an Italian Renaissance humanist author, artist, architect, poet, priest, linguist, philosopher, and cryptographer; he epitomised the nature of those identified now as polymaths. He is considered the founder of Western cryptography, a claim he shares with Johannes Trithemius.

Leonardo da Vinci

Leonardo da Vinci

Leonardo di ser Piero da Vinci was an Italian polymath of the High Renaissance who was active as a painter, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially rested on his achievements as a painter, he also became known for his notebooks, in which he made drawings and notes on a variety of subjects, including anatomy, astronomy, botany, cartography, painting, and paleontology. Leonardo is widely regarded to have been a genius who epitomized the Renaissance humanist ideal, and his collective works comprise a contribution to later generations of artists matched only by that of his younger contemporary, Michelangelo.

Doric order

Doric order

The Doric order was one of the three orders of ancient Greek and later Roman architecture; the other two canonical orders were the Ionic and the Corinthian. The Doric is most easily recognized by the simple circular capitals at the top of columns. Originating in the western Doric region of Greece, it is the earliest and, in its essence, the simplest of the orders, though still with complex details in the entablature above.

Ionic order

Ionic order

The Ionic order is one of the three canonic orders of classical architecture, the other two being the Doric and the Corinthian. There are two lesser orders: the Tuscan, and the rich variant of Corinthian called the composite order. Of the three classical canonic orders, the Corinthian order has the narrowest columns, followed by the Ionic order, with the Doric order having the widest columns.

Corinthian order

Corinthian order

The Corinthian order is the last developed of the three principal classical orders of Ancient Greek architecture and Roman architecture. The other two are the Doric order which was the earliest, followed by the Ionic order. In Ancient Greek architecture, the Corinthian order follows the Ionic in almost all respects other than the capitals of the columns.

Climate

Climate

Climate is the long-term weather pattern in a region, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteorological variables that are commonly measured are temperature, humidity, atmospheric pressure, wind, and precipitation. In a broader sense, climate is the state of the components of the climate system, including the atmosphere, hydrosphere, cryosphere, lithosphere and biosphere and the interactions between them. The climate of a location is affected by its latitude, longitude, terrain, altitude, land use and nearby water bodies and their currents.

Basilica

Basilica

In Ancient Roman architecture, a basilica was a large public building with multiple functions, typically built alongside the town's forum. The basilica was in the Latin West equivalent to a stoa in the Greek East. The building gave its name to the architectural form of the basilica.

Fano

Fano

Fano [ˈfaːno] is a town and comune of the province of Pesaro and Urbino in the Marche region of Italy. It is a beach resort 12 kilometres southeast of Pesaro, located where the Via Flaminia reaches the Adriatic Sea. It is the third city in the region by population after Ancona and Pesaro.

Artisan

Artisan

An artisan is a skilled craft worker who makes or creates material objects partly or entirely by hand. These objects may be functional or strictly decorative, for example furniture, decorative art, sculpture, clothing, food items, household items and tools and mechanisms such as the handmade clockwork movement of a watchmaker. Artisans practice a craft and may through experience and aptitude reach the expressive levels of an artist.

Drainage wheel from Rio Tinto mines

Books VIII, IX and X form the basis of much of what we know about Roman technology, now augmented by archaeological studies of extant remains, such as the water mills at Barbegal in France. The other major source of information is the Naturalis Historia compiled by Pliny the Elder much later in c. 75 AD.

Machines

The work is important for its descriptions of the many different machines used for engineering structures such as hoists, cranes and pulleys, as well as war machines such as catapults, ballistae, and siege engines. As a practising engineer, Vitruvius must be speaking from personal experience rather than simply describing the works of others. He also describes the construction of sundials and water clocks, and the use of an aeolipile (the first steam engine) as an experiment to demonstrate the nature of atmospheric air movements (wind).

Aqueducts

His description of aqueduct construction includes the way they are surveyed, and the careful choice of materials needed, although Frontinus (a general who was appointed in the late 1st century AD to administer the many aqueducts of Rome), writing a century later, gives much more detail of the practical problems involved in their construction and maintenance. Surely Vitruvius' book would have been of great assistance in this. Vitruvius was writing in the 1st century BC when many of the finest Roman aqueducts were built, and survive to this day, such as those at Segovia and the Pont du Gard. The use of the inverted siphon is described in detail, together with the problems of high pressures developed in the pipe at the base of the siphon, a practical problem with which he seems to be acquainted.

Materials

He describes many different construction materials used for a wide variety of different structures, as well as such details as stucco painting. Concrete and lime receive in-depth descriptions.

Vitruvius is cited as one of the earliest sources to connect lead mining and manufacture, its use in drinking water pipes, and its adverse effects on health. For this reason, he recommended the use of clay pipes and masonry channels in the provision of piped drinking-water.^[48]

Vitruvius is the source for the anecdote that credits Archimedes with the discovery of the mass-to-volume ratio while relaxing in his bath. Having been asked to investigate the suspected adulteration of the gold used to make a crown, Archimedes realised that the crown's volume could be measured exactly by its displacement of water, and ran into the street with the cry of Eureka!

Dewatering machines

Design for an Archimedean water-screw

He describes the construction of Archimedes' screw in Chapter X (without mentioning Archimedes by name). It was a device widely used for raising water to irrigate fields and drain mines. Other lifting machines he mentions include the endless chain of buckets and the reverse overshot water-wheel. Remains of the water wheels used for lifting water were discovered when old mines were re-opened at Rio Tinto in Spain, Rosia Montana in Romania and Dolaucothi in west Wales. The Rio Tinto wheel is now shown in the British Museum, and the Dolaucothi specimen in the National Museum of Wales.

Surveying instruments

That he must have been well practised in surveying is shown by his descriptions of surveying instruments, especially the water level or chorobates, which he compares favourably with the groma, a device using plumb lines. They were essential in all building operations, but especially in aqueduct construction, where a uniform gradient was important to the provision of a regular supply of water without damage to the walls of the channel. He also developed one of the first odometers, consisting of a wheel of known circumference that dropped a pebble into a container on every rotation.

Central heating

Ruins of the hypocaust under the floor of a Roman villa. The part under the exedra is covered.

He describes the many innovations made in building design to improve the living conditions of the inhabitants. Foremost among them is the development of the hypocaust, a type of central heating where hot air developed by a fire was channelled under the floor and inside the walls of public baths and villas. He gives explicit instructions how to design such buildings so that fuel efficiency is maximised, so that for example, the caldarium is next to the tepidarium followed by the frigidarium. He also advises on using a type of regulator to control the heat in the hot rooms, a bronze disc set into the roof under a circular aperture which could be raised or lowered by a pulley to adjust the ventilation. Although he does not suggest it himself, it is likely that his dewatering devices such as the reverse overshot water-wheel were used in the larger baths to lift water to header tanks at the top of the larger thermae, such as the Baths of Diocletian. The one which was used in Bath of Caracalla for grinding flour.

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Rio Tinto (river)

Rio Tinto (river)

The Río Tinto is a river in southwestern Spain that rises in the Sierra Morena mountains of Andalusia. It flows generally south-southwest, reaching the Gulf of Cádiz at Huelva. The Rio Tinto river has a unique red and orange colour derived from its chemical makeup that is extremely acidic and with very high levels of iron and heavy metals.

Pliny the Elder

Pliny the Elder

Gaius Plinius Secundus, called Pliny the Elder, was a Roman author, naturalist, natural philosopher, and naval and army commander of the early Roman Empire, and a friend of the emperor Vespasian. He wrote the encyclopedic Naturalis Historia, which became an editorial model for encyclopedias. He spent most of his spare time studying, writing, and investigating natural and geographic phenomena in the field.

Hoist (device)

Hoist (device)

A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium. The most familiar form is an elevator, the car of which is raised and lowered by a hoist mechanism. Most hoists couple to their loads using a lifting hook. Today, there are a few governing bodies for the North American overhead hoist industry which include the Hoist Manufactures Institute, ASME, and the Occupational Safety and Health Administration. HMI is a product counsel of the Material Handling Industry of America consisting of hoist manufacturers promoting safe use of their products.

Crane (machine)

Crane (machine)

A crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy objects and transporting them to other places. The device uses one or more simple machines to create mechanical advantage and thus move loads beyond the normal capability of a human. Cranes are commonly employed in transportation for the loading and unloading of freight, in construction for the movement of materials, and in manufacturing for the assembling of heavy equipment.

Pulley

Pulley

A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt. In the case of a pulley supported by a frame or shell that does not transfer power to a shaft, but is used to guide the cable or exert a force, the supporting shell is called a block, and the pulley may be called a sheave or pulley wheel.

Catapult

Catapult

A catapult is a ballistic device used to launch a projectile a great distance without the aid of gunpowder or other propellants – particularly various types of ancient and medieval siege engines. A catapult uses the sudden release of stored potential energy to propel its payload. Most convert tension or torsion energy that was more slowly and manually built up within the device before release, via springs, bows, twisted rope, elastic, or any of numerous other materials and mechanisms.

Siege engine

Siege engine

A siege engine is a device that is designed to break or circumvent heavy castle doors, thick city walls and other fortifications in siege warfare. Some are immobile, constructed in place to attack enemy fortifications from a distance, while others have wheels to enable advancing up to the enemy fortification. There are many distinct types, such as siege towers that allow foot soldiers to scale walls and attack the defenders, battering rams that damage walls or gates, and large ranged weapons that attack from a distance by launching projectiles. Some complex siege engines were combinations of these types.

Aeolipile

Aeolipile

An aeolipile, aeolipyle, or eolipile, from the Greek "αιολουπυλη", also known as a Hero's engine, is a simple, bladeless radial steam turbine which spins when the central water container is heated. Torque is produced by steam jets exiting the turbine. The Greek-Egyptian mathematician and engineer Hero of Alexandria described the device in the 1st century AD, and many sources give him the credit for its invention. However, Vitruvius was the first to describe this appliance in his De architectura.

Steam engine

Steam engine

A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed, by a connecting rod and crank, into rotational force for work. The term "steam engine" is generally applied only to reciprocating engines as just described, not to the steam turbine. Steam engines are external combustion engines, where the working fluid is separated from the combustion products. The ideal thermodynamic cycle used to analyze this process is called the Rankine cycle. In general usage, the term steam engine can refer to either complete steam plants, such as railway steam locomotives and portable engines, or may refer to the piston or turbine machinery alone, as in the beam engine and stationary steam engine.

Frontinus

Frontinus

Sextus Julius Frontinus was a prominent Roman civil engineer, author, soldier and senator of the late 1st century AD. He was a successful general under Domitian, commanding forces in Roman Britain, and on the Rhine and Danube frontiers. A novus homo, he was consul three times. Frontinus ably discharged several important administrative duties for Nerva and Trajan. However, he is best known to the post-Classical world as an author of technical treatises, especially De aquaeductu, dealing with the aqueducts of Rome.

Segovia

Segovia

Segovia is a city in the autonomous community of Castile and León, Spain. It is the capital and most populated municipality of the Province of Segovia.

Pont du Gard

Pont du Gard

The Pont du Gard is an ancient Roman aqueduct bridge built in the first century AD to carry water over 50 km (31 mi) to the Roman colony of Nemausus (Nîmes). It crosses the river Gardon near the town of Vers-Pont-du-Gard in southern France. The Pont du Gard is the tallest of all Roman aqueduct bridges, as well as one of the best preserved. It was added to UNESCO's list of World Heritage sites in 1985 because of its exceptional preservation, historical importance, and architectural ingenuity.

• Vitruvian Man – a drawing by Leonardo da Vinci
• Vitruvius Britannicus – 18th century work on British architecture named after Vitruvius.
• Den Danske Vitruvius – 18th century work on Danish architecture – inspired by Vitruvius Britannicus.^[49]
• The American Vitruvius – 20th century work on civil architecture by Werner Hegemann
• William Vitruvius Morrison (1794–1838), the son of Irish architect Sir Richard Morrison and himself a noted architect of great houses, bridges, court houses and prisons.
• A small lunar crater has been named after Vitruvius and also an elongated lunar mountain Mons Vitruvius close by.
• The Design Quality Indicator (DQI) tool for buildings uses Vitruvius's principles.

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Vitruvian Man

Vitruvian Man

The Vitruvian Man is a drawing by the Italian Renaissance artist and scientist Leonardo da Vinci, dated to c. 1490. Inspired by the writings by the ancient Roman architect Vitruvius, the drawing depicts a nude man in two superimposed positions with his arms and legs apart and inscribed in both a circle and square. Described by the art historian Carmen C. Bambach as "justly ranked among the all-time iconic images of Western civilization," the work is a unique synthesis of artistic and scientific ideals and often considered an archetypal representation of the High Renaissance.

Leonardo da Vinci

Leonardo da Vinci

Leonardo di ser Piero da Vinci was an Italian polymath of the High Renaissance who was active as a painter, draughtsman, engineer, scientist, theorist, sculptor, and architect. While his fame initially rested on his achievements as a painter, he also became known for his notebooks, in which he made drawings and notes on a variety of subjects, including anatomy, astronomy, botany, cartography, painting, and paleontology. Leonardo is widely regarded to have been a genius who epitomized the Renaissance humanist ideal, and his collective works comprise a contribution to later generations of artists matched only by that of his younger contemporary, Michelangelo.

Den Danske Vitruvius

Den Danske Vitruvius

Den Danske Vitruvius is a richly illustrated 18th-century architectural work on Danish monumental buildings of the period, written by the Danish Baroque architect Lauritz de Thurah. It was commissioned by Christian V in 1735 and published in two volumes between 1746 and 1749. The title refers to the Roman architect and engineer Vitruvius, who published De architectura in the 1st century AD, an authoritative treatise on the architecture of the time. The direct inspiration for de Thurah's Den Danske Vitruvius was Colen Campbell's Vitruvius Britannicus.

Werner Hegemann

Werner Hegemann

Werner Hegemann was an internationally known city planner, architecture critic, in Germany's Weimar Republic. His criticism of Hitler and the Nazi party required him to leave Germany with his family in 1933. He died prematurely in New York City in 1936.

William Vitruvius Morrison

William Vitruvius Morrison

William Vitruvius Morrison was an Irish architect, son and collaborator of Sir Richard Morrison.

Vitruvius (crater)

Vitruvius (crater)

Vitruvius is a small lunar impact crater that lies on the northern edge of the Mare Tranquillitatis. To the east is the crater Gardner, and to the northeast is Fabbroni. To the north-northwest is the elongated Mons Vitruvius mountain, and beyond is the valley where the Apollo 17 mission landed.

Mons Vitruvius

Mons Vitruvius

Mons Vitruvius is a mountain on the Moon that is located in the Montes Taurus region just to the north of Mare Tranquillitatis and to the southeast of Mare Serenitatis. This massif is located at selenographic coordinates of 19.4° N, 30.8° E, and it has a diameter across the base of 15 km. It rises to a maximum height of about 2.3 km near the northeastern end. This mountain was named after the nearby crater Vitruvius, located to the south-southeast. The eponym for this crater is ancient Roman engineer and architect Marcus Vitruvius Pollio.