The roof is the edge of the roof that juts the face of the wall and, usually, projects outside the side of the building. The roof forms an overhang to remove clear water from walls and may be greatly decorated as part of an architectural style, such as the Chinese dougong bracket system.
Video Eaves
Etymology and usage
Eaves is from Old English efes which means edge . According to the Oxford English Dictionary , the roof is a singular and plural word form. However, the Merriam-Webster website lists the word as eave and declares it "usually used in plural". The word was used before the 12th century in the form of efes (Old English).
Maps Eaves
Function
The main function of the roof is to keep the rain water from the walls and to prevent the entry of water at the intersection where the roof meets the wall. The roof can also protect the path around the building from rain, prevent erosion from the foundation, and reduce the splash on the wall from rain when touching the ground.
The secondary function is to control the penetration of the sun as a form of passive solar building design; suspended edges can be designed to adjust the building's sun's gain to match the local climate, latitude and building orientation.
Hanged roof can also protect the open space for roof space ventilation.
Design
Aesthetic, traditional or pure decorative considerations can be won over the highly functional requirements of the roof. The Arts and Crafts movement is influenced by the American Craftsman tradition, which has a very wide roof with decorative brackets, which is not necessarily a real functional necessity; as well as Italian-style roofs, shown above.
The roof can end in a fascia, a board that extends along the roof under a tile or roof sheet to close and protect the exposed rafter ends and to provide a base for fixing the gutter. On gable roofs, the roof may extend beyond the sidewall roof wall by projecting the purlin and usually closed by a bargebo to protect the wall and the purlin end.
The underside of the roof can be filled with horizontal soffit mounted perpendicular to the wall, soffit may be decorative but also has a function of sealing the gap between the rafter from the pests and the weather.
The roof should be designed for local wind speed because overhangs can significantly increase the wind load on the roof.
The line on the ground beneath the outer edge of the ledge is eavesdrip, or dripline, and in typical building planning rules defining the extent of the building and can not exceed the property limit.
See also
- Chhajja
- Eavesdrip
- Eavesdropping
- Gargoyle
- Lookout (architecture)
- Rainhead
- Soffit
References
External links
- Media related to Eaves on Wikimedia Commons
Source of the article : Wikipedia
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