Soluzione esame gennaio 2020

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14/01/2021 CRITICAL PATH: A,D,G,H A penalty of 10 000€ for each week of delay is applied in case the project is not concluded before week 13 Activity Predecessor Duration Dur. reduction Crashing cost Saving Benefit- cost A - 3 2 19,5 20 0,5 B A 4 3 15 30 15 C A 6 2 18 20 2 D A 9 1 7 10 3 E B,C 2 - - - - F E 5 2 6 20 14 G D 5 2 12 20 8 H F,G 1 - - - - CRASHING G! but the gain is only 1 week because the activities E and F has only 1 week of slack time thus the gain is better crash D CRASHING D!! 0 3 3 A 0 0 3 3 4 7 B 6 3 10 9 2 11 E 10 1 12 11 5 16 F 12 1 17 3 6 9 C 4 1 10 17 1 18 H 17 0 18 3 9 12 D 3 0 12 12 5 17 G 12 0 17 CRITICAL PATH: A,D,G,H A,C,E,F,H WE GAINED 1 WEEK Activity Predecessor Duration Dur. reduction Crashing cost Saving Benefit- cost A - 3 2 19,5 20 0,5 B A 4 3 15 30 15 C A 6 2 18 20 2 F E 5 2 6 20 14 G D 5 2 12 20 8 C+G OR F+G COST C+G=30 GAIN C+G=20 COST F+G=18 0 3 3 A 0 0 3 3 4 7 B 5 2 9 9 2 11 E 9 0 11 11 5 16 F 11 0 16 3 6 9 C 3 0 9 16 1 17 H 16 0 17 3 8 11 D 3 0 11 11 5 16 G 11 0 16 GAIN F+G= 20 THUS CRASHING (F+G) CRITICAL PATH: A,D,G,H A,C,E,F,H WE GAINED 2 WEEKS Activity Predecessor Duration Dur. reduction Crashing cost Saving Benefit- cost A - 3 2 19,5 20 0,5 B A 4 3 15 30 15 C A 6 2 18 20 2 THE ONLY POSSIBILITY IS TO CRASH A CRASHING A!! 0 3 3 A 0 0 3 3 4 7 B 5 2 9 9 2 11 E 9 0 11 11 3 14 F 11 0 14 3 6 9 C 3 0 9 14 1 15 H 14 0 15 3 8 11 D 3 0 11 11 3 14 G 11 0 14 CRITICAL PATH: A,D,G,H A,C,E,F,H WE GAINED 2 WEEKS POINT 2 TIME NOW=13 BCWP NOW = BCWS AT TIME 10 → Earned schedule = 10 Activity Expected cost real cost POC% A 18 20 100 B 35 40 100 C 40 30 50 D 35 15 20 E 20 5 20 F 30 - 0 G 20 - 0 H 40 - 0 0 1 1 A 0 0 1 1 4 5 B 3 2 7 7 2 9 E 7 0 9 9 3 12 F 9 0 12 1 6 7 C 1 0 7 12 1 13 H 12 0 13 9 3 12 G 9 0 12 1 8 9 D 1 0 9 TOTAL COST = SUM(…