You work for Motorola in its global cell phone group. You have been made project manager for the design of a new cell phone model. Your supervisors have already scoped the project so you have a list showing the work breakdown structure and this includes major project activities. You must plan the project schedule and calculate project duration and project costs. Your boss wants the schedule and costs on his desk tomorrow morning! You have been given the information in Exhibit 10.14. It includes all the activities required in the project and the duration of each activity. Also, dependencies between the activities have been identified. Remember that the preceding activity must be fully completed before work on the following activity can be started. Your project is divided into five major tasks. Task P involves developing specifications for the new cell phone. Here decisions related to such things as battery life, size of the phone, and features need to be determined. These details are based on how a customer uses the cell phone. These user specifications are redefined in terms that have meaning to the subcontractors that will actually make the new cell phone in Task S, supplier specifications. These involve engineering details for how the product will perform. The individual components that make up the product are the focus of Task D. Task I brings all the components together and a working prototype is built and tested. Finally in Task V, vendors are selected and contracts are negotiated. Exhibit 10.14 Work Breakdown Structure and Actives for the Cell Phone Design Project Major Project Tasks / Activities Activity Identification Dependency Duration (Weeks) Product specifications (P) Overall product specifications Hardware specifications Software specifications Market research P1 P2 P3 P4 – P1 P1 P2, P3 4 5 5 2 Supplier specifications (S) Hardware Software Market research S1 S2 S3 P2 P3 P4 5 6 1 Product design (D) Circuits Battery Display Outer cover User interface Camera Functionality D1 D2 D3 D4 D5 D6 D7 S1, D7 S1 S1 S3 S2 S1, S2, S3 D5, D6 8 1 2 4 4 1 4 Product integration (I) Hardware Software Prototype testing I1 I2 I3 D1,D2,D3, D4, D6 D7 I1, I2 3 5 5 Subcontracting (V) Vendor selection Contract negotiation V1 V2 D7 I3, V1 10 2
1. Draw a project network that includes all the activities.
2. Calculate the start and finish times for each activity and determine the minimum number of weeks for completing the project. Find the critical set of activities for the project.
3. Identify slack in the activities not on the project critical path
4. Your boss would like you to suggest changes that could be made to the project what would significantly shorten it.