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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 53. Chapters: Post and lintel, Door, Gate, Platform screen doors, Secret passage, Garage door opener, Revolving door, Fire door, Mezuzah, Swing door operator, Door security, Sliding glass door, Door of Prophecies, Fenestration Testing Laboratory, Dead bolt, Storm door, Door furniture, Door closer, Devil's door, Door bolt, Sliding door, Revolutionary War Door, Keycard lock, Triangulation sensor, Pocket door, Retractable screen, Sliding door operator, Roller shutter, Overdoor, Trapdoor, Guard stone, Fusuma, Lunette, Chambranle, Atalburu, Coal hole, Sh ji, Portal, Frontispiece, Dutch door, High-speed door, Lazarette, Folding door, Door jamb, Caradco, Hydraulic Door, Selfbolting door. Excerpt: A door is a movable structure used to close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space. When open, they admit ventilation and light. The door is used to control the physical atmosphere within a space by enclosing the air drafts, so that interiors may be more effectively heated or cooled. Doors are significant in preventing the spread of fire. They also act as a barrier to noise. They are also used to screen areas of a building for aesthetics, keeping formal and utility areas separate. Doors also have an aesthetic role in creating an impression of what lies beyond. Doors are often symbolically endowed with ritual purposes, and the guarding or receiving of the keys to a door, or being granted access to a door can have special significance. Similarly, doors and doorways frequently appear in metaphorical or allegorical situations, literature and the arts, often as a portent of change. One of the ornate doors inside the Great Mosque of Kairouan also known as the Mosque of Uqba, city of Kairouan, Tunisia. The door served as a primary defense for the building.Architectural doors h...Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Author: General Books LLC, Source Wikipedia, Books, LLC
Publisher:Books LLC, Wiki Series - 2010-05

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