Basket-handle arch

Thomas Viaduct of the Baltimore and Ohio railroad as an example of a basket handle arch.

A basket-handle arch is characterized by an intrados profile formed by a sequence of circular arcs, each tangent to its neighbors, resulting in a smooth transition between arcs. The simplest form, a three-centered arch, consists of three arc segments with distinct centers, while a five-centered arch is also commonly used.[1] This type of arch is prevalent in architectural applications, particularly in bridge construction. The shape of a basket-handle arch resembles that of a semi-ellipse,[2] featuring a continuous curvature that varies from the extremities of the long axis to the apex of the short axis. It is also referred to as a depressed arch or basket arch,[3] highlighting its distinctive curvature and structural function.[4]

  1. ^ American Technical Society 1920, p. 395, Basket-Handle Arch.
  2. ^ Baker 1889, p. 441.
  3. ^ Woodman & Bloom 2003, Depressed.
  4. ^ Woodman & Bloom 2003, Basket.