FM - Decision 1 - 8) Critical path analysis

Question 1

Way to calculate early and late event times

Answer 1

• Early → forwards → largest
• Late → backwards → smallest

Question 2

Formula for float time of an activity and meaning of a critical activity

Answer 2

• Float time = late finish time - duration - early start time
• Critical activity if float time = 0

Question 3

Method of drawing a Gantt chart

Answer 3

1. Draw duration axis along the top
2. Draw and label solid-edged boxes for all critical activities on the first row
3. For each non-critical activity (in chronological order of early start time) draw and label a solid-edged box for 0 float and then extend it with a dotted-edged box for its maximum float, (each activity on separate rows)
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   (On day 10 means between columns labelled 9 and 10)