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Bell-cast (sprocketed, flared): A roof with the shallow slope below the steeper slope at the eaves. Compare with bell roof. East Asian hip-and-gable roof; Mokoshi: A Japanese decorative pent roof; Pavilion roof : A low-pitched roof hipped equally on all sides and centered over a square or regular polygonal floor plan. [10]
A rain porch is a type of porch with the roof and columns extended past the deck and reaching the ground. The roof may extend several feet past the porch creating a covered patio. A rain porch, also referred to as a Carolina porch, is usually found in the Southeastern United States. [6]
A portico is a porch leading to the entrance of a building, or extended as a colonnade, with a roof structure over a walkway, supported by columns or enclosed by walls. This idea was widely used in ancient Greece and has influenced many cultures, including most Western cultures. Porticos are sometimes topped with pediments.
The defining characteristic of the rain porch is a roof that extends far beyond the edge of the porch deck and is supported with freestanding supports that rise directly from ground level, rather than the floor of the porch deck. This protects the porch deck from exposure to the elements and also leaves it well shaded from the sun most of the time.
The roof underlayment is used to prevent accidental penetration of rainwater or powdery snow, to prevent convective exchanges with thermal insulation, and to control the migration of water vapor. [1] It is an element of the building's thermal performance. [2] The roof underlayment is placed between the frame and the roof support.
Step-backs lower the building's center of mass, making it more stable. A setback as a minimum one-bay indent across all stories is called a recessed bay or recess and is the more common exterior form of an alcove. Upper stories forming a step-back may form a belvedere – and in residential use are considered the penthouse.
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