Flight saving triangle - Flugsparrendreieck

Rafter triangles on a Toggenburg house in Libingen
Rafter triangle on a house from the 1910s in Adligenswil

The flight rafter triangle , rafter triangle or colloquially also Züri-Vieri is a support structure for canopies that has its historical origin in the Zurich region . Flusparrendreiecke prevent slipping flight rafters by steep rafter roofs. They are arranged with wall and intermediate purlins or only with wall purlins. [1]

The wooden construction was used from the 17th century and is still used with success today [2] . The mostly elaborately decorated rafter triangles, which are visually reminiscent of the number 4, are an example of carpentry. [3] Flying triangles were also used as decorative elements on purlin roofs, although they have no static function there. [4]

Individual evidence

  1. ^ Isabell Hermann: The farmhouses of both Appenzell . Appenzeller Verlag, Herisau 2004, ISBN 978-3-85882-387-8 , p. 111.
  2. ↑ Apartment buildings. On the website of Hanspeter Keller, Architekturbüro, Stammheim. Retrieved November 15, 2018.
  3. Haus zur Farb und Malerhüsli. On: www.citymobile.ch, accessed on November 15, 2018.
  4. ^ Jost Kirchgraber: The rural Toggenburg house and its culture. In the upper Thur and Neckertal in the period between 1648 and 1798. VGS Verlagsgenossenschaft, St. Gallen 1990, ISBN 978-3-7291-1056-4 , p. 25