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The graphic shows an example of a Backward Pass.
It shows two consecutive activities represented by boxes. The first one on the left is for Mix Concrete with a duration of 6 units and the one on the right is for Pour Concrete with a duration of 4 units.
The values for the first activity are ES=1 and EF=7.
The values for the second activity are ES=7 and EF=11.
The remaining values are calculated from right to left.
The values for the second activity are LF=15 and LS=11.
The values for the first activity are LF=11 and LS=5.