Civil Engineering Reference
In-Depth Information
Figure 7.1
is changed. The change is so slight, however, that for all practical purposes the moment
capacity of a beam can be assumed to be directly proportional to the steel area.
It will be shown in this chapter that the moment capacities calculated as illustrated in
this example problem will have to be reduced if sufficient lengths are not provided for the
bars to develop their full stresses.
EXAMPLE 7.1
For the uniformly loaded simple beam of Figure 7.2, determine the theoretical points on each end of
the beam where two bars can be cut off and then determine the points where two more bars can be
cut off.
c
3000
f
psi.
f
y
60,000 psi.
Figure 7.2
