A beam or tube that extends outward, supported at one end only, and varying in thickness. A cantilever has zero bending moment at the unattached, thinner, end, and a maximum at the attached thicker end. (see picture)
A twentieth century structural detail. It is used in both Architecture and Furniture Design. It refers to a horizontal member which projects beyond a vertical support which results in a floating effect.
A PROJECTING BEAM OR JOIST, NOT SUPPORTED AT ONE END, USED TO SUPPORT AN EXTENSION OF A STRUCTURE. IN A RESIDENCE USUALLY A DECK, BAY WINDOW, OR CHIMNEY. NO MORE THAN 1/4 OF THE CANTILEVERED BEAM OR JOIST SHOULD EXTEND BEYOND THE SIDE OF THE MAIN STRUCTURE.
A structural system that overhangs the load bearing support it is built on. This allows a load to be placed in a location that does not have some form of support directly beneath it, such as an overhanging deck in the rear yard of a home.
A cantilever is a beam anchored at one end and projecting into space. This beam may be fixed at the support, or extend to another support as illustrated. The beam carries the load to the support where it is resisted by bending moment and shear stress.
A wing built in such a way that it does not require external bracing. Model scale aircraft may have dummy external bracing to replicate the original even though the wings are actually strong enough not to need it.