GCC Ltd. is planning to build a computerised accounts system in one of their warehouses in London. A project manager has been assigned in charge for building the computer system. Discussion and consultation have taken place with members of the engineering staff and warehouse management personnel. They have compiled a list of activities associated with the project. The times (in days) have also been provided for each activity in Table 1. The crashing time and cost are given in Table 2

ACTIVITY	DESCRIPTION	IMMEDIATE PREDECESSOR	TIME(DAYS)
A	POSITION RECRUITING	-	9
B	SYSTEM DEVELOPMENT	-	11
C	SYSTEM TRAINING	A	7
D	EQUIPMENT TRAINING	A	10
E	MANUAL SYSTEM TEST	B,C	1
F	PRELIMINARY SYSTEM CHANGE OVER	B,C	5
G	COMPUTER PERSONNEL INTERFACE	D,E	6
H	EQUIPMENT MODIFICATION	D,E	3
I	EQUIPMENT TESTING	H	1
J	SYSTEM DEBUGGING AND INSTALLATION	F,G	2
K	EQUIPMENT CHANGEOVER	G,I	8

Table 2 Activity crashing and associated cost

ACTIVITY	IMMEDIATE PREDECESSOR	NORMAL DURATION	NORMAL COST	CRASH DURATION	CRASH COST
A	-	9	4,800	7	6,300
B	-	11	9,100	9	15,500
C	A	7	3,000	5	4,000
D	A	10	3,600	8	5,000
E	B,C	1	0	1	0
F	B,C	5	1,500	3	2,000
G	D,E	6	1,800	5	2,000
H	D,E	3	0	3	0
I	H	1	0	1	0
J	F.G	2	0	2	0
K	G,I	8	5,000	6	7,000

Managerial report: Develop a report that presents the activity schedule, duration, critical path and crashing decisions for the warehouse development project taking into consideration the following construction of the network diagram to show the activity sequence accurately, performing an event-based analysis and obtaining the critical path, cost and project duration showing all formula and calculations, performing an activity-based analysis and obtaining the critical path, cost and project duration showing all formula and calculations, top management wants to know the minimal duration of the project and agreed to provide extra cost involved for the completion of the project in shortest time. Using the completion times and the crashing information, determine the activity crashing decisions and revised activity schedule for the project to be completed with the minimal duration showing all formula and calculations including new critical path if any. A critical appraisal.