Cantilever

A cantilever is a rigid structural element, such as a beam or a plate, anchored at only one end to a (usually vertical) support from which it is protruding. Cantilevers can also be constructed with trusses or slabs. When subjected to a structural load, the cantilever carries the load to the support where it is forced against by a moment and shear stress.

Cantilever construction allows for overhanging structures without external bracing, in contrast to constructions supported at both ends with loads applied between the supports, such as a simply supported beam found in a post and lintel system.

In bridges, towers, and buildings

Cantilevers are widely found in construction, notably in cantilever bridges and balconies (see corbel). In cantilever bridges the cantilevers are usually built as pairs, with each cantilever used to support one end of a central section. The Forth Bridge in Scotland is an example of a cantilever truss bridge. A cantilever in a traditionally timber framed building is called a jetty or forebay. In the southern United States a historic barn type is the cantilever barn of log construction.

Cantilever (figure skating)

The cantilever is a figure skating element. Similar to the spread eagle, the skater travels along a deep edge. With knees bent, the skater bends his or her back backwards, parallel to the ice.

It was invented by Werner Groebli, better known as "Mr. Frick", a long-time show skater with Ice Follies. More recently, it became one of Ilia Klimkin's signature moves.

Gallery

Solo cantilever with hands on ice
(Shawn Sawyer)

Solo cantilever with hands on ice
(Shawn Sawyer)

Solo cantilever without hands on ice
(Lubov Iliushechkina)

Solo cantilever without hands on ice
(Lubov Iliushechkina)

Assisted cantilever in pair skating
(Lubov Iliushechkina & Nodari Maisuradze)

Assisted cantilever in pair skating
(Lubov Iliushechkina & Nodari Maisuradze)

Cantilever as part of an ice dancing lift
(Zoé Blanc & Pierre-Loup Bouquet)

Cantilever as part of an ice dancing lift
(Zoé Blanc & Pierre-Loup Bouquet)

References