Civil Engineering Reference
In-Depth Information
DEPTH
WIDTH
A
WIDTH
DEPTH
B
Figure 4-12 The terms width and depth of a beam depend on
the position of the beam. In (A) the broad side is the width of
the beam, whereas in (B), which is the same beam turned over
90
◦
, the narrow side is the width.
DISTRIBUTED LOAD
Figure 4-13 A distributed load is indicated by the iron balls
equally spaced along the beam between the supports.
distributed or concentrated at any point on the span. All beams that
project beyond a support and that carry a load at the free end are
classed as cantilevers. Stresses set up in the beam external to the
outside support are the same as when the beam is rigidly fixed at the
support.
Figure 4-16 illustrates the comparison between the working loads
of variously supported beams, contrasting middle and distributed
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