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Gable

Enlarge picture
The House of the Seven Gables, Salem, Massachusetts, showing four gables in this view.


A gable is the generally triangular portion of a wall between the lines of a sloping roof. The shape of the gable and how it is detailed depends on the structural system being used (which is often related to climate and availability of materials) and aesthetic concerns. Thus the type of roof enclosing the volume dictates the shape of the gable.

In Classic Greek and Roman architecture, the analogous feature is called the tympanum. Strictly speaking, the tympanum is the infill area, often triangular, of the pediment, which also consists of the raking cornice or ends of the sloped roofs (which may appear to bear, but do not actually bear on the tympanum - the fact that many tympanum bear intricate and expensive carvings declaring the building's purpose is evidence of its non-structural role), and the cornice proper, which bears on the architrave, which in turn is supported at points by columns of a colonnade.

A variation of the gable is a crow-stepped gable, which has a stair step design to accomplish the sloping portion. Crow stepped gables were used in Scotland and England as early as the seventeenth century. Examples of the crow stepped gable can be seen at Muchalls Castle and Monboddo House, both 17th century Scottish buildings. Other early examples are found in parts of Denmark and Sweden.

A Gothic ornamental gable of the Cathedral architecture over the windows and portal are called in the German and Dutch language Wimperg too.

Gable ends of more recent buildings are often treated in the same way as the Classic pediment form. But unlike Classical structures, which operate through trabeation (see Trabeated (architecture) ), the gable ends of many buildings are actually bearing-wall structures. Thus, the detailing tends to be ambiguous, misleading, and to some architects "deceitful". See: John Ruskin and The Seven Lamps of Architecture.

Gable roofs are also just about the worst type of roof to have in hurricane regions, as not only do gable roofs easily peel off in hurricane winds, but according to one Hurricane Survival Guide book, a gable end "catches wind like a sail."

See also

roof is the uppermost, covering, part of a building. The purpose of the roof is to protect both the building itself and its living or material contents from the effects of weather.
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Re-invention of roof tiles
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Ancient Rome was a civilization that grew from a small agricultural community founded on the Italian Peninsula circa the 9th century BC to a massive empire straddling the Mediterranean Sea.
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Architecture is the art and science of designing buildings and structures. A wider definition often includes the design of the total built environment: from the macrolevel of town planning, urban design, and landscape architecture to the microlevel of construction details and,
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tympanum (plural, tympana) is the semi-circular or triangular decorative wall surface over an entrance bounded by a lintel and arch.[1] It often contains sculptures or other ornaments.[2] Most architectural styles include this element.
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pediment is a classical architectural element consisting of the triangular section found above the horizontal structure (entablature), typically supported by columns. The gable end of the pediment is surrounded by the cornice moulding.
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cornice comes from Italian cornice, meaning “ledge.” In French: “corniche” and German: “Gesims.”

Cornice molding
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cornice comes from Italian cornice, meaning “ledge.” In French: “corniche” and German: “Gesims.”

Cornice molding
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A column in architecture and structural engineering is a vertical structural element that transmits, through compression, the weight of the structure above to other structural elements below.
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colonnade denotes a long sequence of columns joined by their entablature, often free-standing, as in the famous elliptically curving colonnades that Bernini added to the facade of Saint Peter's Basilica in Rome, which embrace and define the Piazza.
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Crow-stepped gable is a stair-step type of design at the top of the triangular gable-end of a building. The top of the parapet wall projects above the roofline and the top of the brick or stone wall is stacked in a step pattern above the roof as a decoration and as a convenient way
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Motto
Nemo me impune lacessit   (Latin)
"No one provokes me with impunity"
"Cha togar m'fhearg gun dioladh"   
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Motto
Dieu et mon droit   (French)
"God and my right"
Anthem
No official anthem specific to England — the anthem of the United Kingdom is "God Save the Queen".
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Muchalls Castle stands overlooking the North Sea in the countryside of Kincardine and Mearns, Aberdeenshire, Scotland. The lower course is a well preserved double groined 13th century towerhouse structure, built by the Frasers of Muchalls.
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Monboddo House () is a historically famous mansion in The Mearns, Scotland. The structure was generally associated with the Burnett of Leys family.
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cathedral is a church, usually Roman Catholic, Anglican, or Eastern Orthodox, housing the seat of a bishop. The word cathedral takes its name from the word cathedra, or Bishop's Throne (In Latin: ecclesia cathedralis).
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wimperg is a German and Dutch word for a Gothic ornamental gable with tracery over windows or portals, which were often accompanied with pinnacles. It was a typical element in Gothic Architecture especially in cathedral architecture.
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Post and lintel (also called an Architrave[1] ) is a simple construction technique, also called "post and beam", where a horizontal member (the lintel) is supported by two vertical posts at either end. This very simple form is commonly used to support windows and doors.
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John Ruskin (February 8, 1819 – January 20, 1900) is best known for his work as an art critic and social critic, but is remembered as an author, poet and artist as well.
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sail is any type of surface intended to generate thrust by being placed in a wind — in essence a vertically-oriented wing. Sails are used in sailing.

Use of sails

Sails are primarily used at sea, on sailing ships as a propulsion system.
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Dutch gable, also known as a Flemish gable, is a gable, normally acting not only as a roof support but as an ornamental pediment to a wing or other architectural feature such as a projection in the facade.
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facade or façade (IPA: /fəˈsɑːd/) is generally one side of the exterior of a building, especially the front, but also sometimes the sides and rear.
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