Operation and Supply Management

CASE

The “A” case

1. Given the activities and precedence relationships described in the (A) case, develop a network diagram for the wedding plans.

The following table contains the activities, expected activity times, and crashing information.

Activity

Duration (days)

Predecessor Activities Crash Cost

Crash Time

1. Reserve Church

1

2. Church Notice Wait

17

1. Reserve Church $100

10

3. Decorate Church

3

2. Church Notice Wait

4. Travel from Guatemala

10

$500

2

5. Fit Dress

2

4. Travel from Guatemala 11. Sew Dress

6. Choose Cake

2

7. Jack’s Catering Lead Time

10

6. Choose Cake

8. Rehearsal Dinner

1

7. Jack’s Catering Lead Time 18. Get Bridesmaids Gifts

9. Order and Receive Lace

8

10. Choose Pattern $25

5

10. Choose Pattern

3

11. Sew Dress

11

9. Order and Receive Lace $120/day

Can be crashed 5 days.

12. Clean and Press Dresses

2

5. Fit Dress $30

1

13. Order and Receive Invitations

12

14. Choose Invitations $35

5

14. Choose Invitations

3

15. Invitation Lead Time

10

16. Take to Post Office $200

8

16. Take to Post Office

1

17. Address Invitations

17. Address Invitations

4

13. Order and Receive Invitations 19. Prepare Guest List $25/day

Can be crashed 2 days.

18. Get Bridesmaids Gift

1

19. Prepare Guest List

4

20. Wedding

1

3. Decorate Church 8. Rehearsal Dinner 12. Clean and Press Dresses 15. Invitation Lead Time

Reserve Church (1)

Church Notice (17)

Get Gifts (1)

Travel from Guatemala (10)

Decorate Church (3)

Clean & Press (2)

Choose Cake (2)

Rehearsal Dinner (1)

Jack’s Catering (10)

Choose Invitations (3)

Prepare Guest List (4)

Choose Pattern (3)

Receive Lace (8)

Invitations (12)

Fit Dress (2)

Wedding (April 22)

Inv. To Post Office (1)

Invitation Lead Time (10)

Sew Dress (11)

Start Preparations

Address Inv. (4)

2. Identify the paths, which are critical.

There are 7 paths through the network. The paths and their length are as follows:

PATH 1: Reserve Church (1) – Church Notice...