Project Evaluation and Review Technique/Critical Path Method

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3. Bob Heckman, manager of the MIS department at ASW Publishing, has received a request from Virginia Griner, the head of Human Resources, to develop an interactive icon- and menu-driven software package to be used by the benefits specialists in her department. Based on preliminary discussions with Virginia, Bob has identified two basically different types of functions that the package will have to serve, so he is planning on having it written in two modules. Based on this initial information, Bob has broken the project down into eight basic activities, listed in Table 1.1 along with their immediate predecessors and estimated times.
a. Draw the project network.
b. Determine the early and late start and finish times and the slack times for the activities. Identify the critical path. How long will the project take if there are no problems or resource limitations?

Table 1.1: Activity Information for Software Development Project
Activity Description Immediate Predecessors Time (weeks)
A
Survey users for needs -- 2
B Design graphic icons A 3
C Develop flow chart A 1
D Design input-output screens B,C 3
E Code Module 1 C 4
F Code Module 2 C 5
G Merge modules & graphics D,E,F 1
H Test program G 2

4. The Little Lake Theater Company is planning a new production of The Boyfriend, scheduled to open during the second week of October. Will Disney, managing director of the company, has prepared a list of the activities (shown in Table 1.2) that must be completed before the play can open and has estimated the number of weeks for each.
a. Draw the project network.
b. Determine the early and late start and finish times and the slack times for the activities. Identify the critical path. How long will it take before the play is ready to be put on?

Table 1.2: Activity Information for the Little Lake Theater Project
Activity Description Immediate Predecessors Time (weeks)
A Audition & hire actors -- 4
B Design costumes -- 3
C Make costumes A, B 3
D Design sets -- 3
E Build sets D 5
F Design lighting D 2
G Create lighting F 2
H Rehearsals A 3
I Prepare advertising A 1
J Advertising campaign I 3
K Final rehearsals C, E, G, H 1