Step 1

Activity Normal Days A 7B 5C 14D 5E 11F 7G 11H 4I 18

A(7)B(5)C(14)D(5)E(11)F(7)H(4)G(11)I (18)ABC- Project Paths AvailableA-C-E-H-I = 54 (Critical Path)A-D-F-H-I = 41B-G-I = 34

Step 2

Activity Normal Days Normal Cost Crash Time Crash Cost Max reduction of daysCost to Crash / dayabcde = (a-c)A 75,00047,0003667B 56,00036,5002250C 1412,0001015,0004750D 512,000216,00031,333E 1118,000825,00032,333F 715,000418,00031,000G 117,000910,00021,500H 49,000312,00013,000I 1814,0001522,00032,6675440Cost to crash/period( d - b ) / ( a - e )

Step 3Crash the Project to 42 DaysFor crashing the schedule select only the activities on the critical pathA-C-E-H-IStart crashing the schedule from first selecting the least expensive activity and gradually select other activities

Current Time (Days)54Crash Schedule to (Days)42Difference12

Step 4

Activity Normal Days Normal Cost Crash Time Crash Cost Max reduction of daysCost to Crash / dayDays to Crash 12Incurred Crash CostTotal Costabcde = (a-c)A 75,00047,000366732,0007,0001B 56,00036,50022500.00.06,000C 1412,0001015,000475043,00015,000D 512,000217,50031,8330.012,000E 1118,000825,00032,33337,00025,000F 715,000418,00031,0000.015,000G 117,000910,00021,5000.07,000H 49,000312,00013,0000.09,000I 1814,0001522,00032,66725,33319,3335498,00040Days to Crash017,333115,333

Revised CPM after Crashing

Activity Normal Days Crash ScheduleA 74B 55C 1410D 55E 119F 77G 1111H 44I 1816Revised PathsA-C-E-H-I43A-D-F-H-I36B-G-I32

A(7)B(5)C(14)D(5)E(11)F(7)H(4)G(11)I (18)ABC- Project Paths AvailableA-C-E-H-I = 54 (Critical Path)A-D-F-H-I = 41B-G-I = 34