Question 1
The flow and distance data in the table below were input into a layout software program, and solved by "pairwise comparison." That solution called for assignments A-4, B-1, C-3, and D-2, with a total movement of 2430. Verify that result. Is that solution optimal? Can you offer an improved solution? What is the total movement of your alternate solution?
Flow Table | A | B | C | D | Fixed room |
| A | 0 | 5 | 8 | 3 | |
| B | 0 | 0 | 7 | 6 | |
| C | 0 | 2 | 0 | 9 | |
| D | 5 | 12 | 4 | 0 | |
| | | | | | |
| Distance Table |
Room 1 |
Room 2 |
Room 3 |
Room 4 | |
| Room 1 | 0 | 30 | 60 | 80 | |
| Room 2 | 30 | 0 | 30 | 50 | |
| Room 3 | 60 | 30 | 0 | 20 | |
| Room 4 | 80 | 50 | 20 | 0 | |
Question 2
Cyclone Appliances has developed a new European-style convection oven that will be made on an assembly line. The schedule requires 80 ovens in an 8-hour day. The assembly includes seven tasks. The table below indicates the performance time and the sequence requirements for each task.
| Task | Performance Time (minutes) | Task must follow
Task listed below |
| A | 1 | |
| B | 2 | A |
| C | 3 | B |
| D | 2 | B |
| E | 4 | C, D |
| F | 1 | E |
| G | 2 | F |
a. What is the cycle time for this assembly operation?
b. What is the theoretical minimum number of workstations?
c. Draw the precedence diagram.
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