CANTILEVER BEAM-
A cantilever is a beam anchored at only one end. The beam
carries the load to the support where it is resisted by
moment and shear stress.Cantilever construction allows for
overhanging structures without external bracing. Cantilevers
can also be constructed with trusses or slabs.
Cantilevers are widely found in construction, notably in
cantilever bridges and balconies. 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.
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