PERT & GANTT CHARTS An Introduction.

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Presentation transcript:

PERT & GANTT CHARTS An Introduction

Program Evaluation & Review Technique (PERT) - Is used in planning & organising phase of a project. Uses task times & dependencies to determine the sequence of events & how they control how long the project will take – critical path. Booz Allen Hamilton 1958 – Working on US Naval Contract

PERT Diagram - Purpose Purpose To determine the overall project cumulative elapsed time To determine ways to allocate resources to reduce project cumulative elapsed time

PERT DIAGRAM - Process Step 1 – Task Table Step 2 – Diagram & Dependencies Step 3 – Task Execution Times Step 4 – Cumulative Elapsed Time Step 5 – Critical Path Step 6 – Reduce Project Time

PERT STEP 1 – Task Table TASK ID DEPENDENCIES UNITS (DAYS) A Start 2 B 4 C 6 D 5 E C,D 3 F G E,F Finish

PERT Step 2 – Diagram & Dependencies B F START FINISH A C E G D

PERT Step 2 – Diagram & Dependencies B F START FINISH A C E G D

PERT Step 2 – Diagram & Dependencies B F START FINISH A C E G D

PERT Step 2 – Diagram & Dependencies B F START FINISH A C E G D

PERT Step 3 – Task Execution Times B4 F4 START FINISH A2 C6 E3 G2 D5

PERT Step 4 Cumulative Elapsed Time B4 F4 START FINISH A2 C6 E3 G2 D5

PERT Step 4 Cumulative Elapsed Time B4 F4 START FINISH A2 C6 E3 G2 2 D5

PERT Step 4 Cumulative Elapsed Time 6 B4 F4 START FINISH A2 C6 E3 G2 2 D5

PERT Step 4 Cumulative Elapsed Time 6 B4 F4 8 START FINISH A2 C6 E3 G2 2 D5

PERT Step 4 Cumulative Elapsed Time 6 B4 F4 8 START FINISH A2 C6 E3 G2 2 7 D5

PERT Step 4 Cumulative Elapsed Time 6 B4 F4 10 8 START FINISH A2 C6 E3 G2 2 7 D5

PERT Step 4 Cumulative Elapsed Time 6 B4 F4 10 8 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 4 Cumulative Elapsed Time 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 4 Cumulative Elapsed Time =13 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 5 - Critical Path 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 5 - Critical Path 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 5 - Critical Path 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 5 - Critical Path 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 5 - Critical Path 6 B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 6 – Reduce Project Time B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT Step 6 – Reduce Project Time B4 F4 10 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5

PERT – Stochastic PERT B 3-4-5 F 2-4-6 START FINISH A 1-2-3 C 5-6-7 10 8 13 START FINISH A 1-2-3 C 5-6-7 E 2-3-4 G 1-2-3 11 2 7 D 3-5-7

D 3-5-7 PERT – Stochastic PERT B 3-4-5 F 2-4-6 START FINISH A 1-2-3 10 8 13 START FINISH A 1-2-3 C 5-6-7 E 2-3-4 G 1-2-3 11 2 7 D 3-5-7 D 3-5-7

D 3-5-7 PERT – Stochastic PERT B 3-4-5 F 2-4-6 START FINISH A 1-2-3 10 8 13 START FINISH A 1-2-3 C 5-6-7 E 2-3-4 G 1-2-3 11 2 7 D 3-5-7 Optimistic D 3-5-7

D 3-5-7 PERT – Stochastic PERT B 3-4-5 F 2-4-6 START FINISH A 1-2-3 10 8 13 START FINISH A 1-2-3 C 5-6-7 E 2-3-4 G 1-2-3 11 2 7 D 3-5-7 Optimistic Normal D 3-5-7

D 3-5-7 PERT – Stochastic PERT B 3-4-5 F 2-4-6 START FINISH A 1-2-3 10 8 13 START FINISH A 1-2-3 C 5-6-7 E 2-3-4 G 1-2-3 11 2 7 D 3-5-7 Optimistic Normal Pessimistic D 3-5-7

Gantt Chart Shows planning schedule of the tasks for the project Shows progress to date First Used by Henry Gantt 1910

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart B4 F4 START FINISH A2 C6 E3 G2 D5 6 10 8 13 11 2 7 1 2 3 4 8 13 START FINISH A2 C6 E3 G2 11 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

Gantt Chart – C halved B4 F4 START FINISH A2 C3 E3 G2 D5 6 10 5 12 10 5 12 START FINISH A2 C3 E3 G2 10 2 7 D5   1 2 3 4 5 6 7 8 9 10 11 12 13 14 Days TASKS A B C D E F G

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