Question

Activity	Completion (Days)	Immediate Precedence
A. Architectural Design	3	-
B. Clearing of Land	6	A
C. Fencing of project site	7	A
D. Digging of foundation	5	A
E. Completion of foundation work	13	B,C
F. Raising of pillars and block work.	8	C,D
G. Roofing	11	D,F
H. Furnishing of the cathedral	6	G,E

a. Redraw the network diagram for the construction of the National Cathedral by using the
above information provided in the table to complete the network diagram.

b. Calculate the minimum overall project completion time of the National Cathedral and
identify which activities are critical

c. Compute the Total Slack (TS) and Free Slack (FS) for both the critical and the non-
critical paths.
d. If activity E is delayed by 3 days how is the project completion time affected?
e. If activity F is delayed by 3 days how is the project time for completion affected?

f. Identify burst, merged and concurrent activities.

g. Identify the various stakeholders and their possible risk they post to the completion of the
National Cathedral.

ONLY PART   F & G REQUIRED.

Answer 1

Merge activity: When two or more activities come from an event it is known as merge activity.

Burst activity:  When more than one activity leaves an event is known as burst activity.

Concurrent activity:  Activity which can be accomplished concurrently is known as concurrent activity. An activity can be predecessor or successor to an event or it may be concurrent with the one or more of the other activities.