CI_sign

CRITICAL PATH ANALYSIS

Longest sequence of activities in a project plan which must be completed on time for the project to complete on due date. An activity on the critical path cannot be started until its predecessor activity is complete; if it is delayed for a day, the entire project will be delayed for a day unless the activity following the delayed activity is completed a day earlier

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LS LF SLACK

TASK

DURATION

ES EF LF LS SLACK
ES = Earliest start
EF = Earliest finish
LS = Late start
LF = Late finish

Duration = Planned Task Time

Slack = if slack is 0, it’s a critical task

EF = ES + Duration

1st enter the Tasks, Duration, ES & EF (Forward Path)

FORWARD PATH

CRITICAL PATH ANALYSIS

The term forward pass refers specifically to the essential and critical project management component in which the project team leader along with the project team attempts to determine the early start and early finish dates for all of the uncompleted segments of work for all network activities

MANDATE

5WEEKS

3 8 LS LF SLACK

PLAN

2WEEKS

8 10 LS LF SLACK

HLR

6WEEKS

13 19 LS LF SLACK

KICK OFF

3WEEKS

0 3 LS LF SLACK

BUSINESS C

5WEEKS

8 13 LS LF SLACK

DEPLOY

1WEEK

19 20 LS LF SLACK

BRIEF

1WEEK

3 4 LS LF SLACK

BRP

8WEEKS

4 12 LS LF SLACK

SIGN OFF

4WEEKS

13 17 LS LF SLACK
ES = Earliest start
EF = Earliest finish
LS = Late start
LF = Late finish

Duration = Planned Task Time

Slack = if slack is 0, it’s a critical task

Critical path = Any task with 0 Slack

LF = Highest LS Predecessor
LS = LF - Duration

2nd Calculate LF + LS in a backward path

BACKWARDS PATH

CRITICAL PATH ANALYSIS

A backward pass in the area of project management refers to the calculation of late finish dates and late start dates for the portions of schedule activities that have not been completed. This is determined by starting at the project's scheduled end date and working backwards through the schedule network logic

MANDATE

5WEEKS

3 8 3 8 0

PLAN

2WEEKS

8 10 11 13 SLACK

HLR

6WEEKS

13 19 13 19 SLACK

KICK OFF

3WEEKS

0 3 0 3 SLACK

BUSINESS C

5WEEKS

8 13 18 13 SLACK

DEPLOY

1WEEK

19 20 19 20 SLACK

BRIEF

1WEEK

3 4 6 7 SLACK

BRP

8WEEKS

4 12 7 15 SLACK

SIGN OFF

4WEEKS

13 17 15 19 SLACK
ES = Earliest start
EF = Earliest finish
LS = Late start
LF = Late finish

Duration = Planned Task Time

Slack = if slack is 0, it’s a critical task

Slack = LS – ES OR LF – EF

3rd Calculate Slack

SLACK TIME

CRITICAL PATH ANALYST

Slack Time is the amount of time that a scheduled activity may be delayed from its early without start delaying the project finish date, or violating a schedule constraint

MANDATE

CRITICAL

5WEEKS

3 8 3 8 0

PLAN

2WEEKS

8 10 11 13 3

HLR

CRITICAL

6WEEKS

13 19 13 19 0

KICK OFF

CRITICAL

3WEEKS

0 3 0 3 0

BUSINESS CASE

CRITICAL

5WEEKS

8 13 18 13 0

DEPLOY

CRITICAL

1WEEK

19 20 19 20 0

BRIEF

1WEEK

3 4 6 7 3

BRP

8WEEKS

4 12 7 15 3

SIGN OFF

4WEEKS

13 17 15 19 3
ES = Earliest start
EF = Earliest finish
LS = Late start
LF = Late finish

Duration = Planned Task Time

Slack = if slack is 0, it’s a critical task

Critical path = Any task with 0 Slack

4th Calculate critical Path

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