Detail Calculation of Slacks for Noncritical Tasks of the Building of a House Project

Detail Calculation of Slacks for Noncritical Tasks of the Building of a House Project

Dummy Task D1

Total Slack: 87 – (0+0) = 87
Free Slack: 0 – (0+0) = 0
Independent Slack: 0 – (0+0) = 0
Dependent Slack: 87 – (0+0) = 87

Task A

Total Slack: 90 – (0+3) = 87
Free Slack: 90 – (0+3) = 87
Independent Slack: 90 – (87+3) = 0
Dependent Slack: 90 – (87+3) = 0

Task E

Total Slack: 242 – (92+40) = 110
Free Slack: 242 – (92+40) = 110
Independent Slack: 242 – (92+40) = 110
Dependent Slack: 242 – (92+40) = 110

Examine task A:

Total Slack:

Latest time of Event 3 – (Earliest time of Event 1 + Duration of A)

Free Slack:

Earliest time of Event 3 – (Earliest time of Event 1 + Duration of A)

Independent Slack:

Earliest time of Event 3 – (Latest time of Event 1 + Duration of A)

Dependent Slack:

Latest time of Event 3 – (Latest time of Event 1 + Duration of A)