Project scheduling: interpretation of negative slack/float When an activity shows negative slack (negative float) in a network schedule, what does it indicate for the overall program status and resources? Choose the most accurate statement.
Mechanical Engineering
Industrial Engineering and Production Management
Difficulty: Easy
Choose an option
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AExtra resources are available and project completion is not delayed
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BThe programme is behind schedule and additional resources are required to finish on time
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CThe activity is critical and any delay will delay the whole project
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DAll of the above
Answer
Correct Answer: The programme is behind schedule and additional resources are required to finish on time
Explanation
ConceptSlack (float) is the allowable delay of an activity without affecting project dates. Negative slack means the required finish date is earlier than the earliest achievable finish—indicating the schedule is already behind.
ImplicationsNegative float typically requires acceleration measures (e.g., crashing, fast-tracking, or allocating more resources) to meet deadlines.
Final AnswerThe programme is behind schedule and additional resources are required to finish on time