In choosing whether to make a beam continuous or not the designer takes several
factors into account. For example, savings on beam section have to be balanced
against the costs of the supports. A very long continuous beam may involve large
changes in overall length with variations in temperature.
- When a beam runs across several supports it is said
to be "continuous". Such a beam can be of smaller dimensions than
one supported at the ends only since the effective span is less. If the beam
is discontinuous, there is no bending effect at
the supports, and the ends are free to move. Each part, therefore, is not
helped by its neighbours.
ANTERIOR | ARRIBA | SIGUIENTE