Bar chart

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Bar chart

  1. 1. What is Activity• An activity or task is a given kind and amount of work which: – Consumes time – Consumes Resources – has a definable beginning and ending Fixing False Sealing 3 men x 30 days Start time 3000 board type End timeSpring 2008, Bar Chart 1King Saud University Dr. Khalid Al-Gahtani
  2. 2. What is Project• A project is a set of activities with – A well-defined objective(s) – A target completion date – An estimated budget Plan s & R equired Specification s Product Project M an agem ent L im ited Project G iven R esources O bjectives D esiredSpring 2008, Bar Chart 2King Saud University Dr. Khalid Al-Gahtani
  3. 3. Type of Schedule• Written Schedule• Gantt Chart (Bar Chart)• CPM Schedules (Critical Path Method) A – Activity on Arrow 5 – Activity on Node AB A B• PERT 30 X = 36 40• LSM (Linear Schedule Method)Spring 2008, Bar Chart 3King Saud University Dr. Khalid Al-Gahtani
  4. 4. Bar Chart• STEPS – Analyze the project and specify the basic approach to be used. – Break the project down into a reasonable number of activities to be scheduled. – Estimate the time required to perform each activity. – Place the activities in sequence of time, taking into account the requirements that certain activities must be performed sequentially. • Logical constrain • Resources constrain – If a completion date is specified, the diagram is adjusted until this constraint is satisfied.Spring 2008, Bar Chart 4King Saud University Dr. Khalid Al-Gahtani
  5. 5. Bar Chart• Example: Activity Activity Description Dependency Duration ID A Excavation 3 C Foundation A 3 D Column B, C 2 B Moving the soil out A 2 E Wall C, D 5 F Roof E, D 5Spring 2008, Bar Chart 5King Saud University Dr. Khalid Al-Gahtani
  6. 6. SolutionACDBEF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18Spring 2008, Bar Chart 6King Saud University Dr. Khalid Al-Gahtani
  7. 7. Alternative SolutionABCDEF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18Spring 2008, Bar Chart 7King Saud University Dr. Khalid Al-Gahtani
  8. 8. Bar Chart• Advantages of Bar Chart – Very Graphical – Easy to understand – Most widely used• Disadvantages of Bar Chart – Difficult to Update – Difficult to find the Critical Path – Difficult to setup and maintain a large project because it is essentially a manual graphical procedure.Spring 2008, Bar Chart 8King Saud University Dr. Khalid Al-Gahtani
  9. 9. How to identify the Critical path in a Bar Chart• Types of a Project Activity – Critical Activity: if it is delayed, it will delay the project. – Noncritical Activity: it may not delay the project if it’s well managed.Spring 2008, Bar Chart 9King Saud University Dr. Khalid Al-Gahtani
  10. 10. STEPS to identify the Critical Path• Start with the last Activity; Draw a vertical line from the i Node of late Activity. i j• The activities whose j nodes touch the vertical line, are Potential Critical Activity.• Draw a vertical line from the i node of the new critical activity.• Proceed in this manner until you reach Day 0.Spring 2008, Bar Chart 10King Saud University Dr. Khalid Al-Gahtani
  11. 11. Identify the Critical PathABCDEF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18Spring 2008, Bar Chart 11King Saud University Dr. Khalid Al-Gahtani
  12. 12. Class Work Activity Depends upon Duration (Weeks) A C, J 3 B F 2 C F 3 D C, I 4 E G 5 F H 4 G H 2 H - 3 I E, F 4 J B 2Spring 2008, Bar Chart 12King Saud University Dr. Khalid Al-Gahtani
  13. 13. CW SolutionAct. W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13 W14 W15 W16 W17 W18 H F G E I B C J A DSpring 2008, Bar Chart 13King Saud University Dr. Khalid Al-Gahtani

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