Session 10 6 Project Management PERT CPM UNHCReCentreInter

Session 10. 6. Project Management: PERT / CPM UNHCR/e-Centre/Inter. Works - Emergency Management Training 1

Creating Order from Chaos What needs to be done? When? What to do first? Have you done everything? What comes next? PERT Inter. Works/UNHCR 2

Management Tools § § § Jan Feb 6 lists diagrams schedules budgets charts Mar Gantt Chart Apr May Jun Jul Aug assessment identify site contract survey contract water system contract food delivery purchase tents design camp layout set up logistics begin construction PERT Organigramme Inter. Works/UNHCR 3

PERT/CPM DIAGRAMS Boxes PERT Lines Inter. Works/UNHCR 4

Boxes are TASKS Job PERT Inter. Works/UNHCR 5

Lines are RELATIONSHIPS First Job PERT Second Job Inter. Works/UNHCR 6

Task relationship 1 make soup find pot PERT Inter. Works/UNHCR 7

Task relationship 2 find pot make soup find potatoes PERT Inter. Works/UNHCR 8

Task relationship 3 peel potatoes find knife chop onions cut carrots PERT Inter. Works/UNHCR 9

Task relationship 4 PERT find vegetables peel potatoes find knife chop onions Inter. Works/UNHCR 10

Task relationship 5 start PERT identify site order tents Inter. Works/UNHCR end 11

Logic Error 1 -Looping identify site deploy tents transport people calculate tent deficit PERT Inter. Works/UNHCR 12

Correction for looping identify site deploy tents transport people deploy tents calculate tent deficit PERT Inter. Works/UNHCR 13

Logic error 2 - Dangling start identify site prepare budget contract labor finish survey site PERT Inter. Works/UNHCR 14

Correction for Dangling start identify site prepare budget contract labor finish survey site PERT Inter. Works/UNHCR 15

A control loop is something else. Don’t try to include one in this type of analysis. monitor progress implement revisions revise plan PERT decide on corrective action Inter. Works/UNHCR compare to plan 16

REMEMBER! This technique is useful for things that have clear starting and ending points. Always include a start and a finish box in the diagram. A C start finish B PERT Inter. Works/UNHCR 17

PERT/CPM problem 1 Example G Follows U and must be completed before H can start. U PERT G Inter. Works/UNHCR H 18

Answer to PERT/CPM problem 1 U E G M I T P S W PERT H O Inter. Works/UNHCR R K 19

Task Duration 5 Identify Site how much time will it take? PERT Inter. Works/UNHCR 20

Task duration and schedule earliest start date earliest finish date 11 16 5 Identify Site 11 + 5 = 16 PERT Inter. Works/UNHCR 21

Looking Forward earliest start date earliest finish date 11 16 5 Identify Site 11 + 5 = 16 PERT Inter. Works/UNHCR 22

Looking back 11 5 14 Identify Site 19 - 5 = 14 latest start date PERT 16 19 latest finish date Inter. Works/UNHCR 23

Task Chain 0 0 start 5 5 identify site 2 PERT 13 8 7 Inter. Works/UNHCR 5 7 order tents 15 24

PERT/CPM Exercise 2 0 start PERT 3 A 2 B 10 C 5 D 7 E 2 J 12 F 6 G 11 H 5 K 7 L 5 M Inter. Works/UNHCR 0 end 25

PERT/CPM Problem 2 Answer 0 3 3 A 24 0 0 start 10 29 5 5 D 18 12 12 F 18 12 0 5 12 5 18 12 22 29 36 7 E 29 29 H 29 29 2 18 29 12 17 34 36 31 J 36 0 end 36 36 5 M 7 L 22 24 18 11 6 G 5 K PERT 27 10 C 0 17 5 2 B 27 10 8 0 12 3 29 29 Inter. Works/UNHCR 34 26

The “Critical Path” 0 3 3 A 24 0 0 start 10 29 5 5 D 18 12 12 F 18 12 0 5 12 5 18 12 22 29 36 7 E 29 29 H 29 29 2 18 29 12 17 34 36 31 J 36 0 end 36 36 5 M 7 L 22 24 18 11 6 G 5 K PERT 27 10 C 0 17 5 2 B 27 10 8 0 12 3 29 29 Inter. Works/UNHCR 34 27

CONCLUSIONS As an emergency manager, you need all of the help you can get. You need good management tools The right tools must be used for the right jobs PERT/CPM is one good tool for managing and scheduling complex jobs which can be completed (not repetitious service or support jobs) PERT Inter. Works/UNHCR 28