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Task relationships and lags

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From Project Management Fundamentals, a new type of textbook designed to be: granular, easy to use with a "flipped" classroom approach, and designed for electronic distribution on iPads, kindle readers, and PCs/Mac. Find out more http://pmf.education/

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Task relationships and lags

  1. 1. Task Relationships A 4 B 8 Finish to Start Task B cannot start until A is finished Example: “Painting walls” (Task B) can’t start until “Install Drywall” is complete (Task A)
  2. 2. Task Relationships A 4 B 8Start to Start Task B cannot start until Task A is started Example: "Level concrete" (Task B) can't begin until "Pour foundation" (Task A) begins.
  3. 3. Task Relationships A 4 B 8Finish to Finish Task B cannot finish until Task A is finished Example: "Inspect electrical" (Task B) can't finish until "Install electrical" finishes (Task A).
  4. 4. Task Relationships A 4 B 8 Start to Finish Task B cannot finish until Task A is started Example: Your garden plants must be wet when the fertilizer is applied. We need to start “water the garden” (Task B) first to get the plants wet. Task B must continue and can only finish when the “Fertilizing” starts (Task A). Rare
  5. 5. Task Relationships + Lags A 4 B 8 Finish to Start Task B cannot start until Task A is finished Example: “Painting walls” (Task B) can’t start until 4 days after “Install Drywall” is complete (Task A) +4d 0 4 8 16 1680 4
  6. 6. A 4 B 8Start to Start Task B can start 2 days after Task A is started Example: "Install Furniture" (Task B) can begin 2 days after "Install Carpet" (Task A) begins. Task Relationships + Lags +2d 0 4 2 10 102 0

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