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A hip roof on a varied plan, "h" denotes a hip, "v" denotes a valley. A hip roof is self-bracing, requiring less diagonal bracing than a gable roof. Hip roofs are thus much more resistant to wind damage than gable roofs. Hip roofs have no large, flat, or slab-sided ends to catch wind and are inherently much more stable than gable roofs.
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] The sloping sides rise to a peak. For steep tower roof variants use Pyramid roof. Pyramid roof: A steep hip roof on a square building.
House with Dutch gable roof in Schleswig-Holstein, Germany. A Dutch gable roof or gablet roof (in Britain) is a roof with a small gable at the top of a hip roof. The term Dutch gable is also used to mean a gable with parapets. Some sources refer to this as a gable-on-hip roof. [1] Dutch gable roof works of Padmanabhapuram Palace in India
A more recent design is the installation of a roof deck with foil-backed foam along with a second deck that is air-gapped away from the foil-backed foam to allow air to flow vertically to a ventilation outlet at the peak of the roof—it is a double-deck design with an air gap. This design improves efficiency. [13]
Roof pitch is the steepness of a roof expressed as a ratio of inch(es) rise per horizontal foot (or their metric equivalent), or as the angle in degrees its surface deviates from the horizontal. A flat roof has a pitch of zero in either instance; all other roofs are pitched .
Hip rafter (angle rafter): The rafter in the corners of a hip roof. The foot of a hip rafter lands on a dragon beam. King rafter: the longest rafter on the side of a hip roof in line with the ridge. Valley rafter (historically also called a sleeper): A rafter forming a valley (look for illustration showing a valley).
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In November 2010, CSI acquired Building Systems Design (BSD) to help advance software tools for specifications development and communication of building information across the building team. [ 2 ] [ 3 ] BSD is a software firm that is a leading developer of commercial master specifications and construction cost estimating software.