Question

draw the project network. b) what are the es, ef, sl, ls, and lf for each of the nodes in the network? (given id, dur, and description.) c) what is the critical path?

Answer 1

To draw a project network, analyze the given information, draw the activities, and calculate the early and late times. Identify the critical path by finding the longest path with zero slack.

Step-by-step explanation:

Step 1: Analyze the problem and identify what information is given

It is useful to draw a timeline and identify the given information such as project ID, duration, and description.

Step 2: Draw the project network

Construct a diagram of the activities in the project, showing the dependencies and sequence of activities.

Step 3: Calculate ES, EF, SL, LS, and LF for each node

To determine the Early Start (ES) and Early Finish (EF) time for each node, calculate the earliest time each activity can start and finish. To calculate Late Start (LS) and Late Finish (LF) times, work backwards from the project deadline. The Slack (SL) can be calculated by subtracting the ES from the LS or EF from the LF.

Step 4: Determine the critical path

The critical path is the longest path through the network that determines the minimum project duration. It is the sequence of activities with zero slack. The critical path can be identified by looking at the activities with the longest duration or by calculating the slack for each activity.