A supermarket chain is considering opening a supermarket in Grenada. However, to receive funding from the Grenada Development Bank (GDB), the plan must be approved and construction ready to start...

A supermarket chain is considering opening a supermarket in Grenada.  However, to receive funding from the Grenada Development Bank (GDB), the plan must be approved and construction ready to start within the next 26 weeks.  One complicating factor is that the Physical Planning Unit must see an initial design of the supermarket before it will approve the building permit.  The architectural planning section of the supermarket chain has determined the following list of activities necessary to receive approval from the GDB.  Included are the predecessor relationships and some estimates for the activity completion times (estimates are in weeks).

1. Draw the project network diagram.


2. Calculate the expected duration and variance of all activities.


3. Determine the earliest start (ES), latest start (LS), earliest finish (EF), and latest finish times (LF) for each activity.

Extracted text: Activity Description Immediate a Predecessors Survey building site Prepare initial design Receive Physical Planning approval Select design/engineering firm 2 B 6. 10 А, В 2 2 4. D 7 E Determine cash flow needs 4 Review final design Obtain GDB financing D 2. 4 G Е, F 4 Receive contractor bids D 7 10 Select contractor Н, G 2