A dome (from Latin domus ) is an architectural element similar to the hollow upper half of a sphere . There is significant overlap with the term cupola , which may also refer to a dome or a structure on top of a dome. The precise definition of a dome has been a matter of controversy and there are a wide variety of forms and specialized terms to describe them.
121-468: The Eastman Dental Dispensary was constructed between 1915 and 1917 in the Italian Renaissance architectural style by architects Gordon, Madden, and Kaelber. It was built as a free dental dispensary to serve the community of Rochester, New York , later expanding into throat and nose diseases. It fell into a state of disrepair after sitting vacant for close to four decades. The building was listed on
242-631: A cornice . There is a regular repetition of openings on each floor, and the centrally placed door is marked by a feature such as a balcony, or rusticated surround. An early and much copied prototype was the façade for the Palazzo Rucellai (1446 and 1451) in Florence with its three registers of pilasters . Roman and Greek orders of columns are used: Tuscan , Doric , Ionic , Corinthian and Composite . The orders can either be structural, supporting an arcade or architrave, or purely decorative, set against
363-504: A pediment and organised by a system of pilasters , arches and entablatures . The columns and windows show a progression towards the centre. One of the first true Renaissance façades was Pienza Cathedral (1459–62), which has been attributed to the Florentine architect Bernardo Gambarelli (known as Rossellino ) with Leone Battista Alberti perhaps having some responsibility in its design as well. Domestic buildings are often surmounted by
484-400: A " whispering gallery " at its base that at certain places transmits distinct sound to other distant places in the gallery. The half-domes over the apses of Byzantine churches helped to project the chants of the clergy. Although this can complement music, it may make speech less intelligible, leading Francesco Giorgi in 1535 to recommend vaulted ceilings for the choir areas of a church, but
605-480: A central point. The validity of this is unclear, as domes built underground with corbelled stone layers are in compression from the surrounding earth. The precise definition of "pendentive" has also been a source of academic contention, such as whether or not corbelling is permitted under the definition and whether or not the lower portions of a sail vault should be considered pendentives. Domes with pendentives can be divided into two kinds: simple and compound . In
726-713: A circle . Because they reduce the portion of the dome in tension, these domes are strong but have increased radial thrust. Many of the largest existing domes are of this shape. Masonry saucer domes, because they exist entirely in compression, can be built much thinner than other dome shapes without becoming unstable. The trade-off between the proportionately increased horizontal thrust at their abutments and their decreased weight and quantity of materials may make them more economical, but they are more vulnerable to damage from movement in their supports. Also called gadrooned , fluted , organ-piped , pumpkin , melon , ribbed , parachute , scalloped , or lobed domes, these are
847-554: A circular base alone, circular or polygonal base, circular, elliptical, or polygonal base, or an undefined area. Definitions specifying vertical sections include: semicircular, pointed, or bulbous; semicircular, segmental or pointed; semicircular, segmental, pointed, or bulbous; semicircular, segmental, elliptical, or bulbous; and high profile, hemispherical, or flattened. Sometimes called "false" domes, corbel domes achieve their shape by extending each horizontal layer of stones inward slightly farther than
968-516: A circular base for a drum or compound dome, smoothly continue their curvature to form the dome itself. The dome gives the impression of a square sail pinned down at each corner and billowing upward. These can also be thought of as saucer domes upon pendentives. Sail domes are based upon the shape of a hemisphere and are not to be confused with elliptic parabolic vaults, which appear similar but have different characteristics. In addition to semicircular sail vaults there are variations in geometry such as
1089-495: A city." The French word dosme came to acquire the meaning of a cupola vault, specifically, by 1660. This French definition gradually became the standard usage of the English dome in the eighteenth century as many of the most impressive Houses of God were built with monumental domes, and in response to the scientific need for more technical terms. Across the ancient world, curved-roof structures that would today be called domes had
1210-525: A conscious revival and development of certain elements of ancient Greek and Roman thought and material culture. Stylistically, Renaissance architecture followed Gothic architecture and was succeeded by Baroque architecture and neoclassical architecture . Developed first in Florence , with Filippo Brunelleschi as one of its innovators, the Renaissance style quickly spread to other Italian cities. The style
1331-429: A dome. The top of a dome is the "crown". The inner side of a dome is called the "intrados" and the outer side is called the "extrados". As with arches, the "springing" of a dome is the base level from which the dome rises and the "haunch" is the part that lies roughly halfway between the base and the top. Domes can be supported by an elliptical or circular wall called a "drum". If this structure extends to ground level,
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#17328554769561452-546: A flat ceiling filled with as many coffers as possible for where preaching would occur. Cavities in the form of jars built into the inner surface of a dome may serve to compensate for this interference by diffusing sound in all directions, eliminating echoes while creating a "divine effect in the atmosphere of worship." This technique was written about by Vitruvius in his Ten Books on Architecture , which describes bronze and earthenware resonators. The material, shape, contents, and placement of these cavity resonators determine
1573-402: A hemispherical dome can be 2.5 times thinner than a semicircular arch, and a dome with the profile of an equilateral arch can be thinner still. The optimal shape for a masonry dome of equal thickness provides for perfect compression, with none of the tension or bending forces against which masonry is weak. For a particular material, the optimal dome geometry is called the funicular surface ,
1694-509: A limited number of simple elements and joints and efficiently resolve a dome's internal forces. Their efficiency is said to increase with size. Although not first invented by Buckminster Fuller , they are associated with him because he designed many geodesic domes and patented them in the United States. The hemispherical dome is a surface formed by the rotation around a vertical axis of a semicircle . Like other "rotational domes" formed by
1815-470: A long architectural lineage that extends back into prehistory . Domes were built in ancient Mesopotamia , and they have been found in Persian , Hellenistic , Roman , and Chinese architecture in the ancient world , as well as among a number of indigenous building traditions throughout the world. Dome structures were common in both Byzantine architecture and Sasanian architecture , which influenced that of
1936-513: A low rise to span ratio or covering a rectangular plan. Sail vaults of all types have a variety of thrust conditions along their borders, which can cause problems, but have been widely used from at least the sixteenth century. The second floor of the Llotja de la Seda is covered by a series of nine meter wide sail vaults. Also called segmental domes (a term sometimes also used for cloister vaults), or calottes , these have profiles of less than half
2057-433: A mathematical order – linear perspective . Dome A dome can rest directly upon a rotunda wall, a drum , or a system of squinches or pendentives used to accommodate the transition in shape from a rectangular or square space to the round or polygonal base of the dome. The dome's apex may be closed or may be open in the form of an oculus , which may itself be covered with a roof lantern and cupola. Domes have
2178-437: A number of different names reflecting a variety of shapes, traditions, and symbolic associations. The shapes were derived from traditions of pre-historic shelters made from various impermanent pliable materials and were only later reproduced as vaulting in more durable materials. The hemispherical shape often associated with domes today derives from Greek geometry and Roman standardization, but other shapes persisted, including
2299-521: A pointed and bulbous tradition inherited by some early Islamic mosques. Modern academic study of the topic has been controversial and confused by inconsistent definitions, such as those for cloister vaults and domical vaults. Dictionary definitions of the term "dome" are often general and imprecise. Generally-speaking, it "is non-specific, a blanket-word to describe an hemispherical or similar spanning element." Published definitions include: hemispherical roofs alone; revolved arches ; and vaults on
2420-546: A powerful mortar. The aggregate transitioned over the centuries to pieces of fired clay, then to Roman bricks. By the sixth century, bricks with large amounts of mortar were the principle vaulting materials. Pozzolana appears to have only been used in central Italy. Brick domes were the favored choice for large-space monumental coverings until the Industrial Age , due to their convenience and dependability. Ties and chains of iron or wood could be used to resist stresses. In
2541-511: A question of practice, but also a matter for theoretical discussion. Printing played a large role in the dissemination of ideas. In the 15th century the courts of certain other Italian states became centres for spreading of Renaissance philosophy, art and architecture. In Mantua at the court of the Gonzaga , Alberti designed two churches, the Basilica of Sant'Andrea and San Sebastiano . Urbino
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#17328554769562662-522: A section of entablature between the capital and the springing of the arch. Alberti was one of the first to use the arch on a monumental scale at the Basilica of Sant'Andrea, Mantua . Vaults do not have ribs. They are semi-circular or segmental and on a square plan, unlike the Gothic vault which is frequently rectangular. The barrel vault is returned to architectural vocabulary as at St. Andrea in Mantua. The dome
2783-450: A single arch or a set of multiple projecting nested arches placed diagonally over an internal corner. Squinch forms also include trumpet arches, niche heads (or half-domes), trumpet arches with "anteposed" arches, and muqarnas arches. Squinches transfer the weight of a dome across the gaps created by the corners and into the walls. Pendentives are triangular sections of a sphere, like concave spandrels between arches, and transition from
2904-549: A single point of origin. Their appearance in northern Russian architecture predates the Tatar occupation of Russia and so is not easily explained as the result of that influence. They became popular in the second half of the 15th century in the Low Countries of Northern Europe, possibly inspired by the finials of minarets in Egypt and Syria, and developed in the 16th and 17th centuries in
3025-576: A smaller diameter dome immediately above them, as in the Hagia Sophia, or a drum and dome, as in many Renaissance and post-Renaissance domes, with both forms resulting in greater height. One of the earliest types of ribbed vault, the first known examples are found in the Great Mosque of Córdoba in the 10th century. Rather than meeting in the center of the dome, the ribs characteristically intersect one another off-center, forming an empty polygonal space in
3146-561: A triangular or segmental pediment. Openings that do not have doors are usually arched and frequently have a large or decorative keystone. Windows may be paired and set within a semi-circular arch. They may have square lintels and triangular or segmental pediments , which are often used alternately. Emblematic in this respect is the Palazzo Farnese in Rome, begun in 1517. In the Mannerist period
3267-531: A type of dome divided at the base into curved segments, which follow the curve of the elevation . "Fluted" may refer specifically to this pattern as an external feature, such as was common in Mamluk Egypt . The "ribs" of a dome are the radial lines of masonry that extend from the crown down to the springing. The central dome of the Hagia Sophia uses the ribbed method, which accommodates a ring of windows between
3388-542: A vertical axis of a semi-ellipse . Like other "rotational domes" formed by the rotation of a curve around a vertical axis, ellipsoidal domes have circular bases and horizontal sections and are a type of "circular dome" for that reason. Geodesic domes are the upper portion of geodesic spheres. They are composed of a framework of triangles in a polyhedron pattern. The structures are named for geodesics and are based upon geometric shapes such as icosahedrons , octahedrons or tetrahedrons . Such domes can be created using
3509-481: A wall in the form of pilasters. During the Renaissance, architects aimed to use columns, pilasters , and entablatures as an integrated system. One of the first buildings to use pilasters as an integrated system was in the Old Sacristy (1421–1440) by Brunelleschi. Arches are semi-circular or (in the Mannerist style) segmental. Arches are often used in arcades, supported on piers or columns with capitals. There may be
3630-776: Is called a Melon dome. A paraboloid dome is a surface formed by the rotation around a vertical axis of a sector of a parabola. Like other "rotational domes" formed by the rotation of a curve around a vertical axis, paraboloid domes have circular bases and horizontal sections and are a type of "circular dome" for that reason. Because of their shape, paraboloid domes experience only compression, both radially and horizontally. Also called sail vaults , handkerchief vaults , domical vaults (a term sometimes also applied to cloister vaults), pendentive domes (a term that has also been applied to compound domes), Bohemian vaults , or Byzantine domes , this type can be thought of as pendentives that, rather than merely touching each other to form
3751-401: Is made a complete and self-supporting ring. The upper portion of a masonry dome is always in compression and is supported laterally, so it does not collapse except as a whole unit and a range of deviations from the ideal in this shallow upper cap are equally stable. Because voussoir domes have lateral support, they can be made much thinner than corresponding arches of the same span. For example,
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3872-477: Is not well documented. That the dome was known to early Mesopotamia may explain the existence of domes in both China and the West in the first millennium BC. Another explanation, however, is that the use of the dome shape in construction did not have a single point of origin and was common in virtually all cultures long before domes were constructed with enduring materials. Corbelled stone domes have been found from
3993-515: Is the Basilica of San Lorenzo, Florence by Filippo Brunelleschi (1377–1446). During the High Renaissance, concepts derived from classical antiquity were developed and used with greater confidence. The most representative architect is Donato Bramante (1444–1514), who expanded the applicability of classical architecture to contemporary buildings. His Tempietto di San Pietro in Montorio (1503)
4114-542: Is the igloo , a shelter built from blocks of compact snow and used by the Inuit , among others. The Himba people of Namibia construct "desert igloos" of wattle and daub for use as temporary shelters at seasonal cattle camps, and as permanent homes by the poor. Extraordinarily thin domes of sun-baked clay 20 feet in diameter, 30 feet high, and nearly parabolic in curve, are known from Cameroon . The historical development from structures like these to more sophisticated domes
4235-517: Is the first to have squinches create a regular octagon as a base for the dome, which then became the standard practice. Cylindrical or polygonal plan tower tombs with conical roofs over domes also exist beginning in the 11th century. The Seljuk Empire 's notables built tomb-towers, called "Turkish Triangles", as well as cube mausoleums covered with a variety of dome forms. Seljuk domes included conical, semi-circular, and pointed shapes in one or two shells. Shallow semi-circular domes are mainly found from
4356-868: Is used frequently, both as a very large structural feature that is visible from the exterior, and also as a means of roofing smaller spaces where they are only visible internally. After the success of the dome in Brunelleschi's design for Florence Cathedral and its use in Bramante's plan for St. Peter's Basilica (1506) in Rome, the dome became an indispensable element in church architecture and later even for secular architecture, such as Palladio's Villa Rotonda . Roofs are fitted with flat or coffered ceilings. They are not left open as in Medieval architecture. They are frequently painted or decorated. Doors usually have square lintels. They may be set with in an arch or surmounted by
4477-417: Is usually not the case in architectural history. The bleak economic conditions of the late 14th century did not produce buildings that are considered to be part of the Renaissance. As a result, the word Renaissance among architectural historians usually applies to the period 1400 to c. 1525 , or later in the case of non-Italian Renaissances. Historians often use the following designations: During
4598-495: The Florence Baptistery and Pisa Cathedral . Italy had never fully adopted the Gothic style of architecture. Apart from Milan Cathedral , (influenced by French Rayonnant Gothic), few Italian churches show the emphasis on vertical, the clustered shafts, ornate tracery and complex ribbed vaulting that characterise Gothic in other parts of Europe. The presence, particularly in Rome, of ancient architectural remains showing
4719-711: The Loggia and Odeo Cornaro in the garden of Alvise Cornaro . In southern Italy, Renaissance masters were called to Naples by Alfonso V of Aragon after his conquest of the Kingdom of Naples . The most notable examples of Renaissance architecture in that city are the Cappella Caracciolo , attributed to Bramante, and the Palazzo Orsini di Gravina , built by Gabriele d'Angelo between 1513 and 1549. The Classical orders were analysed and reconstructed to serve new purposes. While
4840-484: The Middle East and Central Asia , domes and drums constructed from mud brick and baked brick were sometimes covered with brittle ceramic tiles on the exterior to protect against rain and snow. The new building materials of the 19th century and a better understanding of the forces within structures from the 20th century opened up new possibilities. Iron and steel beams, steel cables, and pre-stressed concrete eliminated
4961-646: The National Register of Historic Places in 1983. In October 1915, George Eastman provided the funds to build a free dispensary in Rochester, New York , that provided oral health benefits to the entire community. This dispensary would serve as the central location for dental services in the Rochester community, supplementing many other smaller offsite locations that had been constructed by other area philanthropists such as Henry Lomb and William Bausch. On May 9, 1917,
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5082-625: The Neolithic period in the ancient Near East , and in the Middle East to Western Europe from antiquity. The kings of Achaemenid Persia held audiences and festivals in domical tents derived from the nomadic traditions of central Asia. Simple domical mausoleums existed in the Hellenistic period. The remains of a large domed circular hall in the Parthian capital city of Nyssa has been dated to perhaps
5203-604: The Palazzo Medici Riccardi (1444–1460) in Florence. Internal walls are smoothly plastered and surfaced with lime wash . For more formal spaces, internal surfaces are decorated with frescoes . Courses, mouldings and all decorative details are carved with great precision. Studying and mastering the details of the ancient Romans was one of the important aspects of Renaissance theory. The different orders each required different sets of details. Some architects were stricter in their use of classical details than others, but there
5324-616: The Palladian arch was employed, using a motif of a high semi-circular topped opening flanked with two lower square-topped openings. Windows are used to bring light into the building and in domestic architecture, to give views. Stained glass, although sometimes present, is not a feature. External walls are generally constructed of brick, rendered, or faced with stone in highly finished ashlar masonry, laid in straight courses. The corners of buildings are often emphasized by rusticated quoins . Basements and ground floors were often rusticated , as at
5445-677: The Quattrocento, sometimes known as the Early Renaissance, concepts of architectural order were explored and rules were formulated. The study of classical antiquity led in particular to the adoption of Classical detail and ornamentation. Space, as an element of architecture, was used differently than it was in the Middle Ages . Space was organised by proportional logic, its form and rhythm subject to geometry, rather than being created by intuition as in Medieval buildings. The prime example of this
5566-513: The Safavid dynasty (1501–1732) are characterized by a distinctive bulbous profile and are considered the last generation of Persian domes. They are generally thinner than earlier domes and are decorated with a variety of colored glazed tiles and complex vegetal patterns, and they were influential on those of other Islamic styles, such as the Mughal architecture of India. An exaggerated style of onion dome on
5687-559: The Sforza , the Castello Sforzesco was built. Venetian Renaissance architecture developed a particularly distinctive character because of local conditions. San Zaccaria received its Renaissance façade at the hands of Antonio Gambello and Mauro Codussi , begun in the 1480s. Giovanni Maria Falconetto , the Veronese architect-sculptor, introduced Renaissance architecture to Padua with
5808-470: The University of Kassel in 1983. A masonry dome produces thrusts downward and outward. They are thought of in terms of two kinds of forces at right angles from one another: meridional forces (like the meridians , or lines of longitude, on a globe) are compressive only, and increase towards the base, while hoop forces (like the lines of latitude on a globe) are in compression at the top and tension at
5929-460: The 15th century. Conversely, there was no call for enormous sporting fixtures and public bath houses such as the Romans had built. The plans of Renaissance buildings have a square, symmetrical appearance in which proportions are usually based on a module. Within a church, the module is often the width of an aisle. The need to integrate the design of the plan with the façade was introduced as an issue in
6050-404: The 20th century have allowed for large dome-shaped structures that deviate from the traditional compressive structural behavior of masonry domes. Popular usage of the term has expanded to mean "almost any long-span roofing system". The word " cupola " is another word for "dome", and is usually used for a small dome upon a roof or turret . "Cupola" has also been used to describe the inner side of
6171-617: The Eastman Dental Dispensary into 57 rental apartments. On April 16, 2014, New York State Homes & Community Renewal (HCR) announced awards of $ 2,200,000 in Housing Trust Fund (HTF) program funds, $ 946,000 in federal Low-Income Housing Tax Credits (LIHTC) and $ 449,356 in New York State Low-Income Housing Credits (SLIHC) to the project. On September 26, 2018, a ribbon cutting ceremony was held at
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#17328554769566292-473: The Mannerist style was Michelangelo (1475–1564), who frequently used the giant order in his architecture, a large pilaster that stretches from the bottom to the top of a façade. He used this in his design for the Piazza del Campidoglio in Rome. Prior to the 20th century, the term Mannerism had negative connotations, but it is now used to describe the historical period in more general non-judgemental terms. As
6413-629: The Netherlands before spreading to Germany, becoming a popular element of the baroque architecture of Central Europe. German bulbous domes were also influenced by Russian and Eastern European domes. The examples found in various European architectural styles are typically wooden. Examples include Kazan Church in Kolomenskoye and the Brighton Pavilion by John Nash . In Islamic architecture, they are typically made of masonry, rather than timber, with
6534-403: The Renaissance view of architecture is Filippo Brunelleschi, (1377–1446). The underlying feature of the work of Brunelleschi was "order". In the early 15th century, Brunelleschi began to look at the world to see what the rules were that governed one's way of seeing. He observed that the way one sees regular structures such as the Florence Baptistery and the tiled pavement surrounding it follows
6655-572: The Seljuk era. The double-shell domes were either discontinuous or continuous. The domed enclosure of the Jameh Mosque of Isfahan , built in 1086-7 by Nizam al-Mulk , was the largest masonry dome in the Islamic world at that time, had eight ribs, and introduced a new form of corner squinch with two quarter domes supporting a short barrel vault. In 1088 Tāj-al-Molk, a rival of Nizam al-Mulk, built another dome at
6776-534: The ancient Greek and Latin domus ("house"), which, up through the Renaissance, labeled a revered house, such as a Domus Dei , or "House of God", regardless of the shape of its roof. This is reflected in the uses of the Italian word duomo , the German/Icelandic/Danish word dom ("cathedral"), and the English word dome as late as 1656, when it meant a "Town-House, Guild-Hall, State-House, and Meeting-House in
6897-424: The base, with the transition in a hemispherical dome occurring at an angle of 51.8 degrees from the top. The thrusts generated by a dome are directly proportional to the weight of its materials. Grounded hemispherical domes generate significant horizontal thrusts at their haunches. The outward thrusts in the lower portion of a hemispherical masonry dome can be counteracted with the use of chains incorporated around
7018-598: The building are clearly Florentine in style, particularly the inner courtyard, but it is not known who the designer was. Ferrara , under the Este , was expanded in the late 15th century, with several new palaces being built such as the Palazzo dei Diamanti and Palazzo Schifanoia for Borso d'Este . In Milan , under the Visconti , the Certosa di Pavia was completed, and then later under
7139-570: The case of the simple dome , the pendentives are part of the same sphere as the dome itself; however, such domes are rare. In the case of the more common compound dome , the pendentives are part of the surface of a larger sphere below that of the dome itself and form a circular base for either the dome or a drum section. The fields of engineering and architecture have lacked common language for domes, with engineering focused on structural behavior and architecture focused on form and symbolism. Additionally, new materials and structural systems in
7260-463: The center. Geometry is a key element of the designs, with the octagon being perhaps the most popular shape used. Whether the arches are structural or purely decorative remains a matter of debate. The type may have an eastern origin, although the issue is also unsettled. Examples are found in Spain, North Africa, Armenia, Iran, France, and Italy. The ellipsoidal dome is a surface formed by the rotation around
7381-420: The centuries from mud, snow, stone, wood, brick, concrete, metal, glass, and plastic. The symbolism associated with domes includes mortuary , celestial , and governmental traditions that have likewise altered over time. The domes of the modern world can be found over religious buildings, legislative chambers, sports stadiums, and a variety of functional structures. The English word "dome" ultimately derives from
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#17328554769567502-508: The church of Santo Tomás de las Ollas in Spain has an oval dome over its oval plan. Other examples of medieval oval domes can be found covering rectangular bays in churches. Oval plan churches became a type in the Renaissance and popular in the Baroque style. The dome built for the basilica of Vicoforte by Francesco Gallo was one of the largest and most complex ever made. Although the ellipse
7623-504: The church, but by guilds representing the wealth and power of the city. Brunelleschi's dome at Florence Cathedral, more than any other building, belonged to the populace because the construction of each of the eight segments was achieved by a different quarter of the city. As in the Platonic Academy of Athens , it was seen by those of Humanist understanding that those people who had the benefit of wealth and education ought to promote
7744-501: The circle being considered the most perfect of forms. According to E. Baldwin Smith, from the late Stone Age the dome-shaped tomb was used as a reproduction of the ancestral, god-given shelter made permanent as a venerated home of the dead. The instinctive desire to do this resulted in widespread domical mortuary traditions across the ancient world, from the stupas of India to the tholos tombs of Iberia . By Hellenistic and Roman times,
7865-459: The circumference or with external buttressing, although cracking along the meridians is natural. For small or tall domes with less horizontal thrust, the thickness of the supporting arches or walls can be enough to resist deformation, which is why drums tend to be much thicker than the domes they support. Unlike voussoir arches, which require support for each element until the keystone is in place, domes are stable during construction as each level
7986-456: The comparable shape in three dimensions to a catenary curve for a two-dimensional arch. Adding a weight to the top of a pointed dome, such as the heavy cupola at the top of Florence Cathedral , changes the optimal shape to more closely match the actual pointed shape of the dome. The pointed profiles of many Gothic domes more closely approximate the optimal dome shape than do hemispheres, which were favored by Roman and Byzantine architects due to
8107-400: The corners of a square bay to the circular base of a dome. The curvature of the pendentives is that of a sphere with a diameter equal to the diagonal of the square bay. Pendentives concentrate the weight of a dome into the corners of the bay. The earliest domes in the Middle East were built with mud-brick and, eventually, with baked brick and stone. Domes of wood allowed for wide spans due to
8228-469: The dispensary was dedicated and on October 15, 1917, the dispensary officially opened to the public. 1917 also saw the graduation of the first class of the Dental Hygiene School. Over the next few years, the dispensary continued to grow, prompting George Eastman to make an endowment of 1,000 additional Kodak stock shares in 1919. This endowment provided necessary funds for the dispensary to aid in
8349-443: The dome's surface of revolution, or be straight lengths with the connecting points or nodes lying upon the surface of revolution. Single-layer structures are called frame or skeleton types and double-layer structures are truss types, which are used for large spans. When the covering also forms part of the structural system, it is called a stressed skin type. The formed surface type consists of sheets joined at bent edges to form
8470-538: The domical tholos had become the customary cemetery symbol. Domes and tent-canopies were also associated with the heavens in Ancient Persia and the Hellenistic-Roman world. A dome over a square base reflected the geometric symbolism of those shapes. The circle represented perfection, eternity, and the heavens. The square represented the earth. An octagon was intermediate between the two. The distinct symbolism of
8591-451: The early Renaissance, Venice controlled sea trade over goods from the East. The large towns of Northern Italy were prosperous through trade with the rest of Europe, Genoa providing a seaport for the goods of France and Spain; Milan and Turin being centres of overland trade, and maintaining substantial metalworking industries. Trade brought wool from England to Florence, ideally located on
8712-475: The effect they have: reinforcing certain frequencies or absorbing them. Also called a corbelled dome , cribbed dome , or false dome , these are different from a 'true dome' in that they consist of purely horizontal layers. As the layers get higher, each is slightly cantilevered , or corbeled , toward the center until meeting at the top. A monumental example is the Mycenaean Treasury of Atreus from
8833-742: The enormous Florence Cathedral dedicated to the Blessed Virgin Mary did no honour to the city under her patronage. However, as the technology and finance were found to complete it, the rising dome did credit not only to the Virgin Mary, its architect and the Church but also to the Signoria , the Guilds and the sectors of the city from which the manpower to construct it was drawn. The dome inspired further religious works in Florence. The development of printed books,
8954-466: The first century AD, showing "...the existence of a monumental domical tradition in Central Asia that had hitherto been unknown and which seems to have preceded Roman Imperial monuments or at least to have grown independently from them." It likely had a wooden dome. Persian architecture likely inherited an architectural tradition of dome-building dating back to the earliest Mesopotamian domes. Due to
9075-862: The first century BC, such as the Tabularium of Rome from 78 BC. Others include the Baths of Antoninus in Carthage (145–160) and the Palatine Chapel at Aachen (13th – 14th century). The most famous example is the Renaissance octagonal dome of Filippo Brunelleschi over the Florence Cathedral. Thomas Jefferson , the third president of the United States, installed an octagonal dome above the West front of his plantation house, Monticello . Also called domes on pendentives or pendentive domes (a term also applied to sail vaults), compound domes have pendentives that support
9196-562: The first examples in Asia Minor date to around 4000 B.C. The geometry was eventually defined using combinations of circular arcs, transitioning at points of tangency. If the Romans created oval domes, it was only in exceptional circumstances. The Roman foundations of the oval plan Church of St. Gereon in Cologne point to a possible example. Domes in the Middle Ages also tended to be circular, though
9317-564: The forefront of Persian architecture as a result. Pre-Islamic domes in Persia are commonly semi-elliptical, with pointed domes and those with conical outer shells being the majority of the domes in the Islamic periods. The area of north-eastern Iran was, along with Egypt, one of two areas notable for early developments in Islamic domed mausoleums, which appear in the tenth century. The Samanid Mausoleum in Transoxiana dates to no later than 943 and
9438-491: The former dispensary to celebrate the opening of the new senior apartment community, named Eastman Gardens in honor of the building's original founder, George Eastman . The total cost of renovations and restorations totaled $ 20.7 million. Italian Renaissance architecture Renaissance architecture is the European architecture of the period between the early 15th and early 16th centuries in different regions, demonstrating
9559-447: The heavenly or cosmic tent stemming from the royal audience tents of Achaemenid and Indian rulers was adopted by Roman rulers in imitation of Alexander the Great , becoming the imperial baldachin . This probably began with Nero , whose " Golden House " also made the dome a feature of palace architecture. The dual sepulchral and heavenly symbolism was adopted by early Christians in both
9680-482: The late Bronze Age . A single or double layer space frame in the form of a dome, a braced dome is a generic term that includes ribbed , Schwedler , three-way grid , lamella or Kiewitt , lattice , and geodesic domes . The different terms reflect different arrangements in the surface members. Braced domes often have a very low weight and are usually used to cover spans of up to 150 meters. Often prefabricated, their component members can either lie on
9801-411: The lower one until they meet at the top. A "false" dome may also refer to a wooden dome. The Italian use of the term finto , meaning "false", can be traced back to the 17th century in the use of vaulting made of reed mats and gypsum mortar. "True" domes are said to be those whose structure is in a state of compression, with constituent elements of wedge-shaped voussoirs , the joints of which align with
9922-498: The mid 15th century and gained momentum in the 16th century, reaching its peak in the Baroque period. The construction of the Sistine Chapel with its uniquely important decorations and the entire rebuilding of St. Peter's Basilica , one of Christendom's most significant churches, were part of this process. In the wealthy Republic of Florence , the impetus for church-building was more civic than spiritual. The unfinished state of
10043-449: The need for external buttressing and enabled much thinner domes. Whereas earlier masonry domes may have had a radius to thickness ratio of 50, the ratio for modern domes can be in excess of 800. The lighter weight of these domes not only permitted far greater spans, but also allowed for the creation of large movable domes over modern sports stadiums. Experimental rammed earth domes were made as part of work on sustainable architecture at
10164-505: The new style of architecture spread out from Italy, most other European countries developed a sort of Proto-Renaissance style, before the construction of fully formulated Renaissance buildings. Each country in turn then grafted its own architectural traditions to the new style, so that Renaissance buildings across Europe are diversified by region. Within Italy the evolution of Renaissance architecture into Mannerism, with widely diverging tendencies in
10285-413: The obvious distinguishing features of Classical Roman architecture were adopted by Renaissance architects, the forms and purposes of buildings had changed over time, as had the structure of cities. Among the earliest buildings of the reborn Classicism were the type of churches that the Romans had never constructed. Neither were there models for the type of large city dwellings required by wealthy merchants of
10406-675: The opposite end of the same mosque with interlacing ribs forming five-pointed stars and pentagons. This is considered the landmark Seljuk dome, and may have inspired subsequent patterning and the domes of the Il-Khanate period. The use of tile and of plain or painted plaster to decorate dome interiors, rather than brick, increased under the Seljuks. Beginning in the Ilkhanate , Persian domes achieved their final configuration of structural supports, zone of transition, drum, and shells, and subsequent evolution
10527-499: The ordered Classical style provided an inspiration to artists at a time when philosophy was also turning towards the Classical. In the 15th century, Florence and Venice extended their power through much of the area that surrounded them, making the movement of artists possible. This enabled Florence to have significant artistic influence in Milan , and through Milan, France . In 1377,
10648-548: The organization came to be known, moved to a new larger building, the Eastman Dental Center at the University of Rochester Medical Center campus. Following the move, the Eastman Dental Dispensary building sat vacant for close to four decades, and fell into a state of disrepair. It was listed on the National Register of Historic Places in 1983. In 2013, Home Leasing LLC, a for-profit developer of affordable housing based in Rochester, New York, announced plans to redevelop
10769-581: The place of a prince during royal ceremonies. Over time such domes became primarily focal points for decoration or the direction of prayer. The use of domes in mausoleums can likewise reflect royal patronage or be seen as representing the honor and prestige that domes symbolized, rather than having any specific funerary meaning. The wide variety of dome forms in medieval Islam reflected dynastic, religious, and social differences as much as practical building considerations. Because domes are concave from below, they can reflect sound and create echoes. A dome may have
10890-624: The promotion of civil peace and order were seen as the marks of citizenship. This led to the building of structures such as Brunelleschi's Hospital of the Innocents with its elegant colonnade forming a link between the charitable building and the public square, and the Laurentian Library where the collection of books established by the Medici family could be consulted by scholars. Some major ecclesiastical building works were also commissioned, not by
11011-612: The pursuit of learning and the creation of that which was beautiful. To this end, wealthy families—the Medici of Florence, the Gonzaga of Mantua, the Farnese in Rome, the Sforzas in Milan—gathered around them people of learning and ability, promoting the skills and creating employment for the most talented artists and architects of their day. During the Renaissance, architecture became not only
11132-580: The rediscovery of ancient writings, the expanding of political and trade contacts and the exploration of the world all increased knowledge and the desire for education. The reading of philosophies that were not based on Christian theology led to the development of humanism through which it was clear that while God had established and maintained order in the Universe, it was the role of Man to establish and maintain order in Society. Through humanism, civic pride and
11253-458: The relatively light and flexible nature of the material and were the normal method for domed churches by the 7th century, although most domes were built with the other less flexible materials. Wooden domes were protected from the weather by roofing, such as copper or lead sheeting. Domes of cut stone were more expensive and never as large, and timber was used for large spans where brick was unavailable. Roman concrete used an aggregate of stone with
11374-502: The rest of Europe and Islam , respectively, in the Middle Ages . The domes of European Renaissance architecture spread from Italy in the early modern period , while domes were frequently employed in Ottoman architecture at the same time. Baroque and Neoclassical architecture took inspiration from Roman domes. Advancements in mathematics, materials, and production techniques resulted in new dome types. Domes have been constructed over
11495-649: The return of the Pope from the Avignon Papacy and the re-establishment of the Papal court in Rome, brought wealth and importance to that city, as well as a renewal in the importance of the Pope in Italy, which was further strengthened by the Council of Constance in 1417. Successive Popes, especially Julius II , 1503–13, sought to extend the Papacy's temporal power throughout Italy. In
11616-636: The revival of interest in this period. Erwin Panofsky , Renaissance and Renascences in Western Art , (New York: Harper and Row, 1960) The Renaissance style was recognized by contemporaries in the term "all'antica" , or "in the ancient manner" (of the Romans). Historians often divide the Renaissance in Italy into three phases. Whereas art historians might talk of an Early Renaissance period, in which they include developments in 14th-century painting and sculpture, this
11737-417: The ribs at the base of the dome. The central dome of St. Peter's Basilica also uses this method. Cultures from pre-history to modern times constructed domed dwellings using local materials. Although it is not known when the first dome was created, sporadic examples of early domed structures have been discovered. The earliest discovered may be four small dwellings made of Mammoth tusks and bones. The first
11858-530: The river for the production of fine cloth, the industry on which its wealth was founded. By dominating Pisa , Florence gained a seaport, and became the most powerful state in Tuscany. In this commercial climate, one family in particular turned their attention from trade to the lucrative business of money-lending. The Medici became the chief bankers to the princes of Europe, becoming virtually princes themselves as they did so, by reason of both wealth and influence. Along
11979-471: The rotation of a curve around a vertical axis, hemispherical domes have circular bases and horizontal sections and are a type of "circular dome" for that reason. They experience vertical compression along their meridians, but horizontally experience compression only in the portion above 51.8 degrees from the top. Below this point, hemispherical domes experience tension horizontally, and usually require buttressing to counteract it. According to E. Baldwin Smith, it
12100-402: The round building may be called a " rotunda ". Drums are also called " tholobates " and may or may not contain windows. A " tambour " or " lantern " is the equivalent structure over a dome's oculus, supporting a cupola. When the base of the dome does not match the plan of the supporting walls beneath it (for example, a dome's circular base over a square bay ), techniques are employed to bridge
12221-490: The scarcity of wood in many areas of the Iranian plateau and Greater Iran , domes were an important part of vernacular architecture throughout Persian history. The Persian invention of the squinch , a series of concentric arches forming a half-cone over the corner of a room, enabled the transition from the walls of a square chamber to an octagonal base for a dome in a way reliable enough for large constructions and domes moved to
12342-465: The structure. Also called domical vaults (a term sometimes also applied to sail vaults), polygonal domes , coved domes , gored domes , segmental domes (a term sometimes also used for saucer domes), paneled vaults , or pavilion vaults , these are domes that maintain a polygonal shape in their horizontal cross section. The component curved surfaces of these vaults are called severies , webs , or cells . The earliest known examples date to
12463-453: The thick and heavy bulging portion serving to buttress against the tendency of masonry domes to spread at their bases. The Taj Mahal is a famous example. An oval dome is a dome of oval shape in plan, profile, or both. The term comes from the Latin ovum , meaning "egg". The earliest oval domes were used by convenience in corbelled stone huts as rounded but geometrically undefined coverings, and
12584-541: The trade routes, and thus offered some protection by commercial interest, moved not only goods but also artists, scientists and philosophers. The return of the Pope Gregory XI from Avignon in September 1377 and the resultant new emphasis on Rome as the center of Christian spirituality, brought about a surge in the building of churches in Rome such as had not taken place for nearly a thousand years. This commenced in
12705-511: The treatment of nose and throat disorders, as well as provide orthodontics services. This endowment also provided the necessary means for the dispensary to open a tonsil-adenoid clinic. Mr. Eastman continued to be a major benefactor of the dispensary even into his death in 1932, leaving a bequest of an additional $ 1 million. In 1941 the dispensary officially gained its name as the Eastman Dental Dispensary . By 1978, Eastman Dental, as
12826-544: The two shells of the dome have significantly different profiles, which spread rapidly throughout the region. The development of taller drums also continued into the Timurid period. The large, bulbous, fluted domes on tall drums that are characteristic of 15th century Timurid architecture were the culmination of the Central Asian and Iranian tradition of tall domes with glazed tile coverings in blue and other colors. The domes of
12947-505: The two. One technique is to use corbelling, progressively projecting horizontal layers from the top of the supporting wall to the base of the dome, such as the corbelled triangles often used in Seljuk and Ottoman architecture. The simplest technique is to use diagonal lintels across the corners of the walls to create an octagonal base. Another is to use arches to span the corners, which can support more weight. A variety of these techniques use what are called " squinches ". A squinch can be
13068-477: The use of domes in architecture and in the ciborium , a domical canopy like the baldachin used as a ritual covering for relics or the church altar . The celestial symbolism of the dome, however, was the preeminent one by the Christian era . In the early centuries of Islam, domes were closely associated with royalty. A dome built in front of the mihrab of a mosque, for example, was at least initially meant to emphasize
13189-521: The use of semicircular arches, hemispherical domes , niches and aediculae replaced the more complex proportional systems and irregular profiles of medieval buildings. The word "Renaissance" derives from the term rinascita , which means rebirth, first appeared in Giorgio Vasari 's Lives of the Most Excellent Painters, Sculptors, and Architects , 1550. Although the term Renaissance
13310-444: The work of Filippo Brunelleschi , but he was never able to carry this aspect of his work into fruition. The first building to demonstrate this was Basilica of Sant'Andrea, Mantua by Leone Battista Alberti . The development of the plan in secular architecture was to take place in the 16th century and culminated with the work of Palladio . Façades are symmetrical around their vertical axis. Church façades are generally surmounted by
13431-524: The work of Michelangelo , Giulio Romano and Andrea Palladio , led to the Baroque style in which the same architectural vocabulary was used for very different rhetoric. Outside Italy, Baroque architecture was more widespread and fully developed than the Renaissance style, with significant buildings as far afield as Mexico and the Philippines . Italy of the 15th century, and the city of Florence in particular,
13552-515: Was a shape likely known to the Assyrians, defined by Greek theoretical mathematicians, and standardized by Roman builders. Bulbous domes bulge out beyond their base diameters, offering a profile greater than a hemisphere. An onion dome is a greater than hemispherical dome with a pointed top in an ogee profile. They are found in the Near East , Middle East , Persia, and India and may not have had
13673-497: Was also a good deal of innovation in solving problems, especially at corners. Mouldings stand out around doors and windows rather than being recessed, as in Gothic architecture. Sculptured figures may be set in niches or placed on plinths. They are not integral to the building as in Medieval architecture. The leading architects of the Early Renaissance or Quattrocento were Filippo Brunelleschi , Michelozzo and Leon Battista Alberti . The person generally credited with bringing about
13794-461: Was an important centre with the Ducal Palace being constructed for Federico da Montefeltro in the mid 15th century. The Duke employed Luciano Laurana from Dalmatia , renowned for his expertise at fortification. The design incorporates much of the earlier medieval building and includes an unusual turreted three-storeyed façade. Laurana was assisted by Francesco di Giorgio Martini. Later parts of
13915-411: Was carried to other parts of Europe at different dates and with varying degrees of impact. Renaissance style places emphasis on symmetry , proportion , geometry and the regularity of parts, as demonstrated in the architecture of classical antiquity and in particular ancient Roman architecture , of which many examples remained. Orderly arrangements of columns , pilasters and lintels , as well as
14036-499: Was directly inspired by circular Roman temples . He was, however, hardly a slave to the classical forms and it was his style that was to dominate Italian architecture in the 16th century. During the Mannerist period, architects experimented with using architectural forms to emphasize solid and spatial relationships. The Renaissance ideal of harmony gave way to freer and more imaginative rhythms. The best known architect associated with
14157-579: Was found by a farmer in Mezhirich , Ukraine, in 1965 while he was digging in his cellar and archaeologists unearthed three more. They date from 19,280 – 11,700 BC. In modern times , the creation of relatively simple dome-like structures has been documented among various indigenous peoples around the world. The wigwam was made by Native Americans using arched branches or poles covered with grass or hides. The Efé people of central Africa construct similar structures , using leaves as shingles. Another example
14278-658: Was home to the Renaissance. It is in Florence that the new architectural style had its beginning, not slowly evolving in the way that Gothic grew out of Romanesque , but consciously brought to being by particular architects who sought to revive the order of a past " Golden Age ". The scholarly approach to the architecture of the ancient coincided with the general revival of learning. A number of factors were influential in bringing this about. Italian architects had always preferred forms that were clearly defined and structural members that expressed their purpose. Many Tuscan Romanesque buildings demonstrate these characteristics, as seen in
14399-512: Was known, in practice, domes of this shape were created by combining segments of circles. Popular in the 16th and 17th centuries, oval and elliptical plan domes can vary their dimensions in three axes or two axes. A sub-type with the long axis having a semicircular section is called a Murcia dome, as in the Chapel of the Junterones at Murcia Cathedral . When the short axis has a semicircular section, it
14520-405: Was restricted to variations in form and shell geometry. Characteristic of these domes are the use of high drums and several types of discontinuous double-shells, and the development of triple-shells and internal stiffeners occurred at this time. The construction of tomb towers decreased. The 7.5 meter wide double dome of Soltan Bakht Agha Mausoleum (1351–1352) is the earliest known example in which
14641-642: Was used first by the French historian Jules Michelet , it was given its more lasting definition from the Swiss historian Jacob Burckhardt , whose book The Civilization of the Renaissance in Italy , 1860, was influential in the development of the modern interpretation of the Italian Renaissance . The folio of measured drawings Édifices de Rome moderne; ou, Recueil des palais, maisons, églises, couvents et autres monuments (The Buildings of Modern Rome), first published in 1840 by Paul Letarouilly, also played an important part in
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