Question 1 - 20 Marks

a) Construct an activity on arrow network based on the activity descriptions below. Show

all your work. Label activities in the network by their activity letters and node numbers.

Remove any redundant dependencies and label all dummy activities

b) Construct a precedence network based on the same activity descriptions below. Show

all your work. Label activities in the network by their activity letters and node numbers.

Remove all redundant dependencies and arrange activities in proper sequence steps.

Activities A, B, C start the project.

Activity D can start when Activities A, E and F are completed.

Activity E also depends on Activity B.

Activity X follows Activity A and precedes Activity L.

Activity E is preceded by Activities G and H.

The predecessors to Activity M are Activities L, D and H.

The successors to Activity C are Activities E, F, I and J.

Activity H cannot begin until Activity I is finished.

Activity K and N follow Activities I and J, and precede Activities E and O

Activity P depends on D and H , and precedes Activity L