When reinforcing bars are bent, caution must
for the different bar sizes and for the various
be exercised to ensure the bends are not too sharp.
types of hooks. These bending details are shown
If too sharp a bend is put into the bars, they may
in figure 7-12. There are many different types of
crack or be weakened. Therefore, certain
bends, depending on where the rods are to be
minimum bend diameters have been established
placed. For example, there are bends on heavy
Figure 7-12.-Standard hook details.