Saddle roof

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Example of a modern saddle roof: Warszawa Ochota railway station.
The roof of this tower is specifically called a saddle roof. Attribution: Piergiuliano Chesi

Saddle roof has two meanings, one modern and one historical. The modern meaning is a roof form which follows a convex curve about one axis and a concave curve about the other. The hyperbolic paraboloid form has been used for roofs at various times since it is easily constructed from straight sections of lumber, steel, or other conventional materials.[1] The term is used because the form resembles the shape of a saddle.

Sometimes referred to as a hypar, the saddle roof may also be formed as a tensegrity structure.[2]

Mathematically, a saddle shape contains at least one saddle point.

The historical meaning is a synonym for a gable roof particularly a dual-pitched roof on a tower, also called a pack-saddle roof.[3]

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References[edit]

  1. ^ A Dictionary of Architecture, Fleming, Honour, Pevsner
  2. ^ Membrane Structures: Understanding Their Forms, Prof. Dr. Eng. M. Mollaert
  3. ^ Passmore, Augustine C.. "Saddle Roof". Handbook of technical terms used in architecture and building and their allied trades and subjects,. London: Scott, Greenwood, and Co.;, 1904. 303. Print.

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