Civil Engineering Reference
In-Depth Information
L
FREE END
FIXED END
CANTILEVER
d
b
P
LOADED
AT END
Figure 4-14 A simple cantilever beam that is fixed at one end
and free at the other; this beam is supporting a concentrated
load at its free end.
L
CANTILEVER
DISTRIBUTED LOAD
Figure 4-15
A cantilever beam with an equally distributed
load.
loads of beams supported at both ends with equal loads on cantilever
beams. In Figure 4-16,
P
=
the concentrated loads,
W
=
the evenly
distributed load,
f
=
the fiber stress,
b
=
the width of the beam,
d
=
the depth of the beam, and
L
=
the length of the span.
Wind Loads on Roofs
Snow on roofs (if the roofs are of a slope that is low enough to
permit the snow to lie in place) will weigh approximately 8 pounds
per square foot per foot of depth when freshly fallen. When wet, its
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