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Door of 10 Downing Street, London, showing a transom separating the door from the window above. In architecture, a transom is a transverse horizontal structural beam or bar, or a crosspiece separating a door from a window above it. This contrasts with a mullion, a vertical structural member. [1] Transom or transom window is also the customary U ...
A mullion is a vertical element that forms a division between units of a window or screen, or is used decoratively. [1] It is also often used as a division between double doors. When dividing adjacent window units its primary purpose is a rigid support to the glazing of the window. Its secondary purpose is to provide structural support to an ...
Tracery is an architectural device by which windows (or screens, panels, and vaults) are divided into sections of various proportions by stone bars or ribs of moulding. [1] Most commonly, it refers to the stonework elements that support the glass in a window. The purpose of the device is practical as well as decorative, because the increasingly ...
King's College Chapel, Cambridge, Great East Window (four-centred arch, straight mullions and transoms) The chancel of Gloucester Cathedral (c. 1337–1357). Perpendicular Gothic (also Perpendicular, Rectilinear, or Third Pointed) architecture was the third and final style of English Gothic architecture developed in the Kingdom of England during the Late Middle Ages, typified by large windows ...
A transom window is a window above a door. In an exterior door the transom window is often fixed, in an interior door, it can open either by hinges at top or bottom, or rotate on hinges. It provided ventilation before forced air heating and cooling. A fan-shaped transom is known as a fanlight, especially in the British Isles.
A door frame, window frame, door surround, window surround, or niche surround is the architectural frame around an aperture such as a door or window. This may consist of separate pieces including jambs (side pieces) and lintel (top piece). A doorway may include side lights and/or a transom beside or above the door; the framing around the door ...
An ornate 19th-century porte-cochère, at Waddesdon Manor A modern example at a hospital. A porte-cochère (/ ˌ p ɔːr t k oʊ ˈ ʃ ɛ r /; French: [pɔʁt.kɔ.ʃɛʁ]; lit. ' coach gateway '; [1] pl. porte-cochères or portes-cochères) [2] is a doorway to a building or courtyard, "often very grand," through which vehicles can enter from the street [3] or a covered porch-like structure at ...
Colonnade. In classical architecture, a colonnade is a long sequence of columns joined by their entablature, often free-standing, or part of a building. [1] Paired or multiple pairs of columns are normally employed in a colonnade which can be straight or curved. The space enclosed may be covered or open.