Develop the precedence diagram network for the following project and then calculate the TF and FF for each activity. Mark critical activities with an asterisk.

The activity-on-arrow network of activities for a construction project is shown in the figure. The duration (expressed in days) of the activities are mentioned besides the arrows. V The critical duration for this construction project is

Using the activity list below and any appropriate drawing tool, create a complete network diagram using the precedence method showing Activity, Duration, ES, EF, LS, LF and Slack per activity: ACTIVITY A B C D E F G H DURATION 5 12 20 15 15 30 12 8 PREDECESSOR A B B B C, D E, F G

Q2. (20 pts) To handle recursive relationships, in practice, there are 2 possible approaches: Approach #1. (according to the class's recommendations) CName ID Name Rank Designer PK/FK PK Ref CName CName Approach # 2. (this is used by some industry practitioners) MentorID MenteeID MentorWorkload Designer PK/FK PK Mentorship PK/FK Ref PK/FK Designer.ID PK/FK Designer.ID FK Ref ID Name Rank MentorID MentorWorkload (the Mentor is the person giving advice, the Mentee is the person receiving advice) Which approach(es) allow(s) a designer to have more than one mentors? Explain. (up to 4 lines) Designer.ID Which approach(es) allow(s) a designer to mentor more than one other designers? Explain. (up to 4 lines)