An aisle is a linear space for walking with rows of non-walking spaces on both sides. Aisles with seating on both sides can be seen in airplanes, in buildings such as churches, cathedrals, synagogues, meeting halls, parliaments, courtrooms, theatres, and in long passenger vehicles. An aisle floor may be level or, as in theatres, sloping upward from a stage.
Aisles also cross through shops, where they have shelving on either side; warehouses, flanked by storage pallets; and factories, where they separate different work areas. In health clubs, exercise equipment is normally arranged along aisles.
They are distinguished from corridors, hallways, walkways, footpaths, pavements (American English sidewalks), trails, paths and open areas of buildings: aisles lie between other open or seating areas, which are all enclosed within a structure. Spaces between buildings are not considered aisles, regardless of their size.
The word is related to French aile (wing).
Aisles have certain general physical characteristics:
In architecture, an aisle is more specifically the wing of a house, or a lateral division of a large building. The earliest examples of aisles date back to the Roman times and can be found in the Basilica Ulpia (basilica of Trajan), which had double aisles on either side of its central area. The church of St. Peter's in Rome has the same number. [1]
In church architecture, an aisle (also known as an yle or alley) is more specifically a passageway to either side of the nave that is separated from the nave by colonnades or arcades, a row of pillars or columns. Occasionally aisles stop at the transepts, but often aisles can be continued around the apse. Aisles are thus categorized as nave-aisles, transept-aisles or choir-aisles. A semi-circular choir with aisles continued around it, providing access to a series of chapels, is a chevet. [1]
In Gothic architecture, the aisles' roofs are lower than that of the nave, allowing light to enter through clerestory windows. In Romanesque architecture, however, the roofs are at roughly equal heights, with those of the aisle being only slightly lower than that of the nave. In Germany, churches where the roofs of the aisles and nave are the same height, such as St. Stephen's, Vienna, the Wiesenkirche at Soest, St. Martin's, Landshut, and the Frauenkirche (Church of Our Lady) in Munich are known as Hallenkirchen. [1]
When discussing overall design, architectural historians include the centrally-positioned nave in the number of aisles. Thus the original St Peter's Basilica in Rome, Milan Cathedral, Amiens Cathedral, Notre Dame de Paris and Alexander Nevsky Cathedral in Sofia [2] are all described as having five aisles, meaning they have two side aisles either side of the nave. Antwerp Cathedral even has seven aisles (three at either side of the central nave). In the United Kingdom, cathedrals generally only have one aisle on each side, with Chichester Cathedral, Elgin Cathedral and St Mary Magdalene, Taunton being the only three exceptions.
In supermarkets there are two types of aisles, food aisles and checkout aisles.
Food aisles are where goods are displayed. At the end of food aisles may be found crown end displays, where high-margin goods are displayed for impulse purchase.
In retail stores that do not primarily sell food, aisles containing products would be referred to either generically as merchandise aisles, or by the particular products contained in the aisle, e.g., "the gardening aisle", "the sports equipment aisle".
Checkout aisles contain cash registers at which customers make their purchases. Regardless of the type of merchandise the establishment sells, it is common to display a range of "impulse buy" items along the checkout aisle, such as cold beverages, magazines, candy and batteries. These are often called "lanes" to distinguish them from the food aisles.
For customer convenience, supermarkets and retail stores commonly number the aisles and have signs indicating both the aisle number and the types of products displayed in that aisle.
Churches, courtrooms, legislatures, and meeting halls may identify individual rows, seats or sections but do not normally assign aisle numbers or display signs regarding aisles.
Libraries are commonly divided into several areas:
The spaces between rows of book shelves in the "stacks" area are called aisles and desks in the reading area are frequently arranged in rows with aisles.
Server rooms are typically divided into hot and cold aisles for cooling efficiency, and access to servers.
Films, stage plays and musical concerts ordinarily are presented in a darkened facility so the audience can see the presentation better. To improve safety, often the edges of the aisles in such facilities are marked with a row of small lights. The markers frequently are strings of light-emitting diodes (LEDs) because LEDs are durable, have low power consumption and use low voltages that are not subject to electrical codes. To provide a higher level of light focused downward, lighting fixtures referred to as luminaries are often built into the side of the seat facing the aisle.
Sport stadiums and outdoor arenas frequently have several types of aisles, including aisles to purchase tickets for events, aisles to enter the main event area and aisles to go to seating. Stadium seating routinely is separated into sections by aisles. Seating rows are accessed by stairsteps. To promote safety, aisles commonly are divided by a handrail in the middle of the aisle.
The floor plan of aisled barns resembles that of an aisled church. However, the nave in farm buildings is called an aisle thus a "three aisled barn". [3] Aisled barns have the big barn doors on the gable end of the building giving access to the center aisle, often called the drive floor or threshing floor. The side aisles may be the same widths making the barn symmetrical or the aisle where animals were housed may be narrower which is apparent outside the barn because the barn doors are then off-center. The area between the posts, perpendicular to the aisles are called bays. In stables there is a stable aisle down the centre with individual stalls facing the aisle.
On vehicles, the aisle is more specifically a passageway for passengers to move along within the vehicle.
National and local government regulations require a minimum width for aisles in various building types. Regulatory agencies frequently inspect buildings, vehicles, etc., to enforce regulations requiring that aisles not be restricted. Inspectors have imposed fines for blocking or restricting passage when boxes or folding chairs are stored in aisles, for example. Insurance companies frequently have safety inspectors to examine the premises, both to determine whether insureds are complying with the insurer's requirements for coverage and to look for any practices that could lead to injury or property damage, including restricting passage in aisles. The Americans with Disabilities Act sets certain standards for building access and other design considerations in all new construction and major renovations in the U.S. [4] An architectural barrier is any feature that makes access or use of a building difficult, unreasonably dangerous or impossible. This can include aisles that are too narrow for easy access by a wheelchair. [5] Often, the only way to get from a row of chairs, shelves, workstations, etc., to an exit is by an aisle. Historically, many deaths and serious injuries have occurred due to fire, inhalation of smoke or noxious fumes, etc., because blocked or partially blocked aisles prevented persons from promptly leaving a dangerous area.
Regulations applicable to public carriers transporting passengers often require aisles to be completely clear in vehicles, such as airlines, buses and trains. Many insurance companies have requirements regarding minimum aisle width, unrestricted aisles and easy access to exits, and will refuse to insure companies that do not meet their requirements or will increase the premiums on companies that frequently violate the requirements.
Romanesque architecture is an architectural style of medieval Europe that was predominant in the 11th and 12th centuries. The style eventually developed into the Gothic style with the shape of the arches providing a simple distinction: the Romanesque is characterized by semicircular arches, while the Gothic is marked by the pointed arches. The Romanesque emerged nearly simultaneously in multiple countries ; its examples can be found across the continent, making it the first pan-European architectural style since Imperial Roman architecture. Similarly to Gothic, the name of the style was transferred onto the contemporary Romanesque art.
In Western ecclesiastical architecture, a cathedral diagram is a floor plan showing the sections of walls and piers, giving an idea of the profiles of their columns and ribbing. Light double lines in perimeter walls indicate glazed windows. Dashed lines show the ribs of the vaulting overhead. By convention, ecclesiastical floorplans are shown map-fashion, with north to the top and the liturgical east end to the right.
Cathedrals, collegiate churches, and monastic churches like those of abbeys and priories, often have certain complex structural forms that are found less often in parish churches. They also tend to display a higher level of contemporary architectural style and the work of accomplished craftsmen, and occupy a status both ecclesiastical and social that an ordinary parish church rarely has. Such churches are generally among the finest buildings locally and a source of regional pride. Many are among the world's most renowned works of architecture. These include St Peter's Basilica, Notre-Dame de Paris, Cologne Cathedral, Salisbury Cathedral, Antwerp Cathedral, Prague Cathedral, Lincoln Cathedral, the Basilica of Saint-Denis, Santa Maria Maggiore, the Basilica of San Vitale, St Mark's Basilica, Westminster Abbey, Saint Basil's Cathedral, Antoni Gaudí's incomplete Sagrada Família and the ancient cathedral of Hagia Sophia in Istanbul, now a mosque.
The nave is the central part of a church, stretching from the main entrance or rear wall, to the transepts, or in a church without transepts, to the chancel. When a church contains side aisles, as in a basilica-type building, the strict definition of the term "nave" is restricted to the central aisle. In a broader, more colloquial sense, the nave includes all areas available for the lay worshippers, including the side-aisles and transepts. Either way, the nave is distinct from the area reserved for the choir and clergy.
The narthex is an architectural element typical of early Christian and Byzantine basilicas and churches consisting of the entrance or vestibule, located at the west end of the nave, opposite the church's main altar. Traditionally the narthex was a part of the church building, but was not considered part of the church proper.
A triforium is an interior gallery, opening onto the tall central space of a building at an upper level. In a church, it opens onto the nave from above the side aisles; it may occur at the level of the clerestory windows, or it may be located as a separate level below the clerestory. Masonry triforia are generally vaulted and separated from the central space by arcades. Early triforia were often wide and spacious, but later ones tend to be shallow, within the thickness of an inner wall, and may be blind arcades not wide enough to walk along. The outer wall of the triforium may itself have windows, or it may be solid stone. A narrow triforium may also be called a "blind-storey", and looks like a row of window frames.
In architecture, a clerestory is a high section of wall that contains windows above eye-level. Its purpose is to admit light, fresh air, or both.
An auditorium is a room built to enable an audience to hear and watch performances. For movie theatres, the number of auditoria is expressed as the number of screens. Auditoria can be found in entertainment venues, community halls, and theaters, and may be used for rehearsal, presentation, performing arts productions, or as a learning space.
A transept is a transverse part of any building, which lies across the main body of the building. In cruciform ("cross-shaped") churches, in particular within the Romanesque and Gothic Christian church architectural traditions, a transept is an area set crosswise to the nave. Each half of a transept is known as a semitransept.
Rayonnant was a very refined style of Gothic Architecture which appeared in France in the 13th century. It was the defining style of the High Gothic period, and is often described as the high point of French Gothic architecture. French architects turned their attention from building cathedral of greater size and height towards bringing greater light into the cathedral interiors and adding more extensive decoration. The architects made the vertical columns and supports thinner, made extensive use of pinnacles and moldings. They combined the triforium gallery and the clerestory into single space and filled it with stained glass. They made extensive use of moldings and bar tracery to decorate the exteriors and interiors.
A choir, also sometimes called quire, is the area of a church or cathedral that provides seating for the clergy and church choir. It is in the western part of the chancel, between the nave and the sanctuary, which houses the altar and Church tabernacle. In larger medieval churches it contained choir-stalls, seating aligned with the side of the church, so at right-angles to the seating for the congregation in the nave. Smaller medieval churches may not have a choir in the architectural sense at all, and they are often lacking in churches built by all denominations after the Protestant Reformation, though the Gothic Revival revived them as a distinct feature.
A hall church is a church with a nave and aisles of approximately equal height. In England, Flanders and the Netherlands, it is covered by parallel roofs, typically, one for each vessel, whereas in Germany there is often one single immense roof. The term was invented in the mid-19th century by Wilhelm Lübke, a pioneering German art historian. In contrast to an architectural basilica, where the nave is lit from above by the clerestory, a hall church is lit by the windows of the side walls typically spanning almost the full height of the interior.
Eastern Orthodox church architecture constitutes a distinct, recognizable family of styles among church architectures. These styles share a cluster of fundamental similarities, having been influenced by the common legacy of Byzantine architecture from the Eastern Roman Empire. Some of the styles have become associated with the particular traditions of one specific autocephalous Eastern Orthodox patriarchate, whereas others are more widely used within the Eastern Orthodox Church.
The Cathedral of Cefalù is a Roman Catholic basilica in Cefalù, Sicily. It is one of nine structures included in the UNESCO World Heritage Site known as Arab-Norman Palermo and the Cathedral Churches of Cefalù and Monreale.
French architecture consists of architectural styles that either originated in France or elsewhere and were developed within the territories of France.
Early Gothic is the term for the first period of Gothic architecture which lasted from about 1120 until about 1200. The early Gothic builders used innovative technologies to resolve the problem of masonry ceilings which were too heavy for the traditional arched barrel vault. The solutions to the problem came in the form of the rib vault, where thin stone ribs passed the weight of the ceiling to rows of columns and outside the walls to another innovation, the flying buttress.
An aisleless church is a single-nave church building that consists of a single hall-like room. While similar to the hall church, the aisleless church lacks aisles or passageways on either side of the nave and separated from the nave by colonnades or arcades, a row of pillars or columns. However, there is often no clear demarcation between the different building forms, and many churches, in the course of their construction history, developed from a combination of different types.
Catalan Gothic is an artistic style, with particular characteristics in the field of architecture. It occurred in the Principality of Catalonia within the Crown of Aragon between the 13th and 15th centuries, which places it at the end of the European Gothic period and at the beginning of the Renaissance. The term Catalan Gothic is confined to Barcelona and its area of influence, which has its own characteristics.
The Romanesque style of architecture was introduced in Portugal between the end of the 11th and the beginning of the 12th century. In general, Portuguese cathedrals have a heavy, fortress-like appearance, with crenellations and few decorative elements apart from portals and windows. Portuguese Romanesque cathedrals were later extensively modified, among others the Old Cathedral of Coimbra, although it only had some minor changes.