A cantilever is a beam fixed at only one end.
The beam carries the
load to the support where it is forced against by shear stress and moment. Cantilever construction should be
allowed for overhanging structures without external revitalizing. Cantilevers can also be
constructed with slabs or trusses.
Cantilevers
are widely used in construction, remarkably in cantilever bridges and balconies. Generally in cantilever
bridges the cantilevers are built as pairs, with each cantilever used to
support one end of a central section.
Fig.1 &
2 shows the Cantilever beam without and with point load.
fig1 fig2
Classification of beam based on supports
Simply
supported - a
beam supported on the ends which
Fixed - a
beam supported on both ends and undemonstrative from rotation.
Double
overhanging - a simple beam with both ends extending beyond its supports on
both ends.
Cantilever - a
projecting beam fixed only at one end.
Trussed - a
beam strengthened by adding a cable or rod to form a truss.
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