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From Wikipedia, the free encyclopedia

Gable roof
Gable roof
A form of gable roof (Käsbissendach) on the tower of the church in Hopfen am See, Bavaria
A form of gable roof (Käsbissendach) on the tower of the church in Hopfen am See, Bavaria

A gable roof[1] is the classic, most commonly occurring roof shape in those parts of the world with cold or temperate climates. It consists of two roof sections sloping in opposite directions and placed such that the highest, horizontal edges meet to form the roof ridge. The design of this type of roof is achieved using rafters, roof trusses or purlins. The pitch of the roof and the height of the gutters can vary greatly.

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Transcription

Contents

Distribution

The reason why the gable roof is so common is the simple design of the roof timbers and the rectangular shape of the roof sections. This avoids details which require a great deal of work or cost and which are prone to damage. If the pitch or the rafter lengths of the two roof sections are different, it is described as an 'asymmetrical gable roof'. A gable roof on a church tower (gable tower) is usually called a 'cheese wedge roof' (Käsbissendach) in Switzerland.

Its versatility means that the gable roof is used in many regions of the world. In regions with strong winds and heavy rain, gable roofs are built with a steep pitch in order, for example, to prevent the ingress of water. By comparison, in mountain and alpine regions, gable roofs have a more shallow pitch, because this supports snow better and reduces the risk of an uncontrolled avalanche. Another reason is that due to its high insulation qualities the snow layer acts as insulation against heat loss during winter time and this insulation layer remains atop the shallow roofs longer than on steeper angled roofs.

Advantages and disadvantages

Gable roofs have several advantages:[2]

  • They are inexpensive
  • They may be designed in many different ways.
  • They are based on a simple design principle.[3]
  • They are more weather-resistant than flat roofs

But gable roofs also have some disadvantages:

  • Only roof windows and gable windows may be used for illumination.
  • Low-pitch gable roofs result in a loss of living space. This may be partly compensated for e.g. by the installation of dormers.
  • Gable roofs are more prone to wind damage than hip roofs.[4]

Types and categorisation

Gable roofs may be constructed with different pitches and these are sometimes categorised by different names. For example in German-speaking countries the types of gable roof are:

  • Shallow gable roof (flaches Satteldach) with a pitch of ≤ 30°
  • New German (neudeutsches Dach) or angled roof (Winkeldach) with a pitch of 45°
  • When the pitch it greater than 62° it is called a Gothic (gotisches) or Old German roof (altdeutsches Dach)
  • If the roof has the shape of an equilateral triangle and 60° pitch it is called an Old Franconian (altfränkisches) (commonly found in the region of Franconia) or Old French roof (altfranzösisches Dach)[5]

See also

References

  1. ^ Fritz Baumgart: DuMont’s kleines Sachlexikon der Architektur. Cologne, 1977.
  2. ^ Informationen rund ums Satteldach. Retrieved 20 June 2012.
  3. ^ "Satteldach: Die einfache Konstruktion hat sich bewährt. Retrieved 20 June 2012". Archived from the original on 30 January 2014. Retrieved 14 January 2017.
  4. ^ Grazulis, Thomas P. (1993). Significant tornadoes, 1680-1991: A Chronology and Analysis of Events. St. Johnsbury, Vermont: Environmental Films. p. 106. ISBN 1-879362-03-1.
  5. ^ Willibald Mannes, Franz-Josef Lips-Ambs: Dachkonstruktionen in Holz, Deutsche Verlags-Anstalt, 1981, ISBN 3-421-03283-1.

External links

This page was last edited on 14 January 2020, at 09:18
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