Mba-Ch8 Exercises/Solutions

Ch8 Exercises

1. Given the network plan that follows, compute the early, late, and slack times. What is the project duration? Using any approach you wish (e.g., trial and error), develop a loading chart for resources Electrical Engineers (EE), and resource, Mechanical Engineers (ME). Assume only one of each resource exists. Given your resource schedule, compute the early, late, and slack times for your project. Which activities are now critical? What is the project duration now? Could something like this happen in real projects?

Instead of taking 9 days the duration has been extended to 11 days and all activities are critical. Resource shortages are common in real life and this problem demonstrates the impact resource constraints can have on project schedules.

2. Given the network plan that follows, compute the early, late, and slack times. What is the project duration? Using any approach you wish (e.g., trial and error) develop a loading chart for resource resources Carpenters (C) and Electricians (E). Assume only one Carpenter is available and two Electricians are available. Given your resource schedule, compute the early, late, and slack times for your project. Which activities are now critical? What is the project duration now?

Resource constraints extend the project duration from 12 days to 14 days and Activity 2 which was part of the original critical path is no longer critical path. All other activities are critical which illustrates the key point that resource constraints tend to increase the sensitivity of project networks.

3. Compute the early, late, and slack times for the activities in the network that follows, assuming a time-constrained network. Which activities are critical? What is the time-constrained project duration?

Note: Recall in the schedule resource load chart the “time constrained” schedule interval (ES through LF) has been shaded. Any resource schedule beyond the shaded area will delay the...