A curved structure for spanning an opening, designed to support a vertical load primarily by axial compression

• Arch

• Beam

• Foundation

• Column

An arch constructed of individual stone or brick voussoirs

• Masonry arch

• Funicular arch

• Fixed arch

• Skew arch

An arch shaped to develop only axial compression under a given loading. This shape may be found by inverting the funicular shape for a cable carrying a similar loading pattern. It is subject to bending if the loading pattern changes.

• Masonry arch

• Funicular arch

• Fixed arch

• Skew arch

A fixed frame structure having an arched form

• Masonry arch

• Funicular arch

• Fixed arch

• Skew arch

An arched structure of timber, steel, or reinforced concrete, constructed as rigid body capable of carrying bending stresses

• Rigid arch

• Two-hinged arch

• Three-hinged arch

A two-hinged frame structure having an arched form

• Rigid arch

• Two-hinged arch

• Three-hinged arch

A three-hinged frame structure having an arched form

• Rigid arch

• Two-hinged arch

• Three-hinged arch

Any of the wedge-shaped units in a masonry arch or vault, having side cuts converging at one of the arch centers

• Voussoir

• Springer

• Keystone

• Rise

The first voussoir resting on the impost of an arch

• Voussoir

• Springer

• Keystone

• Rise

The wedge-shaped, often embellished voussoir at the crown of an arch, serving to lock the other voussoirs in place

• Voussoir

• Springer

• Keystone

• Rise