Practical Project Management for Building and Construction

176  •  Practical Project Management for Building and Construction

• Add the task’s duration, which will yield the “earliest activity-nish”

of activity j (EF

j

).

• ES

j

+ weighted average duration = EF

j

.

For multiple relationships, the ES of the subsequent activity is the latest

EF. When lag (delay) and lead (overlap) are taken into account,

ES

j

= EF

i

+ lag – lead

where ES

j

stands for early start activity j and EF

i

is the earliest nish of a

premature activity.

6.7.4.2  Backward Pass

e computer continues by making a backward pass (see Figure6.15). One

looks for the latest nish and latest start for each activity that is acceptable

if one should ...