This question has been answered by mangal on Feb 23, 2013. View Solution
dianneboskel posted a question Feb 21, 2013 at 7:27am
Chapter 10, Problem 2

Fresh Foods Grocery is considering redoing its facility layout. The from–to matrix showing daily customer trips between departments is shown in the table below.

Trips between Departments

Department A B C D E F

A. Dry groceries — 15 45 25 10 50
B. Bread — 30 16 25 25
C. Frozen foods — 34 15 20
D. Meats — 40 10
E. Vegetables — 20

F. Health and beauty aids —

Their current layout is shown in figure below.

The following layout is proposed for Fresh Foods Grocery.

Compute the ld score for Fresh Foods' current and proposed layouts.
Current Layout

Proposed Layout


Chapter 10, Problem 6

Gator Office Systems has interviewed managers in order to develop the from–to matrix:

Trips between Departments

Department A B C D E F

A — 30 — 34 50 25
B — — 55 10 10
C — — 15 5
D — — —
E — 30

F —




The current layout is shown in the figure below.

A better layout has been proposed for Gator Office Supplies:

Compute the ld score for Gator Office Supplies' current and proposed layouts.
Current Layout

Proposed Layout

Chapter 10, Problem 8

David's Sport Supplies is a store that sells sports equipment and gear for teenagers and young adults. David's is in the process of assigning the location of storage areas in its warehouse to minimize the number of trips made to retrieve needed items.

Given in the table below are the departments that need to be located, the number of trips made per week for each department, and the area needed by each department.

Trips to and Area
Department from Dock Needed

1. Baseball equipment 160 2
2. Football gear 100 1
3. Hockey equipment 150 3
4. Basketball equipment 120 1
5. Sports clothes 270 3

Which location scheme is the best?









Chapter 10, Problem 10

MMS Associates is a telecommunications service provider. The company is currently redesigning its main office to accommodate six newly hired salespeople. Some of the salespeople are expected to work in teams, so office assignments are very important. The table below presents the from–to matrix showing the expected frequency of contacts between members of the new sales staff.

Sales Person A B C D E F

A — 6 12 18 1 1
B — 4 19 3 0
C — 5 0 0
D — 7 19
E — 0

F —

This block plan shows the assigned office locations for the six sales members.

Michael Marc, the President of MMS Associates, is considering an alternative plan:

What is the ld score for this plan?










How does it compare to the original plan considered?
An alternative plan is .



Chapter 10, Problem 12

A manufacturing company is designing an assembly line to produce its main product. The line should be able to produce 60 units per hour. The following data in the Table give the necessary information.

Task Immediate Predecessor Task Time (sec)

A None 35
B A 50
C A 21
D B 38
E C 25
F D, E 58
G F 15

(a) Which task is the bottleneck?
Task is the bottleneck.


b) Select the appropriate precedence diagram for the above information.









(c) Compute the cycle time with a desired output of 60 units per hour.
C = seconds/unit
Chapter 10, Problem 18

A dress-making operation is being designed as an assembly line. The table below shows the tasks that need to be performed, their task times, and preceding tasks. If the goal is to produce thirty dresses per hour, answer the questions.


Work Element Immediate
Predecessor Task Time
(sec)

A. Cut dress body None 30
B. Cut sleeves None 40
C. Cut collar None 20
D. Sew dress body A 100
E. Sew sleeves to dress B, D 25
F. Sew collar to dress C, D 50
G. Hem dress E, F 50
H. Package dress G 90

(a) Compute the cycle time.
C = seconds/dress


(b) Which task is the bottleneck?
Task is the bottleneck
c) What is the maximum output for this line?
Maximum Output = dresses per hour.


d) Compute the theoretical minimum number of stations.

(Round your answer up to the nearest whole number.)
TM = stations.
or 4 stations.


(e) Assign work elements to stations, using the longest task time rule.
Work Station Task Selected



























(f) Compute the efficiency and balance delay of your assignment.

(Round your answers to 2 decimal places, the tolerance is +/-0.05)
Efficiency = %

Balance Delay = %

Chapter 10, Problem 20

The table below shows the tasks required to assemble an aluminum storm door and the length of time needed to complete each task.


Task Immediate
Predecessor Task Time
(sec)

A None 32
B A 43
C A 12
D A 23
E B, C, D 15
F E 25
G None 20
H F, G 5

Suppose a cycle time is 90 seconds
(a) Compute the theoretical minimum number of workstations.

(Round your answer up to the nearest whole number.)
TM = workstations





(b) Compute the outputs.

(Round your answers to 2 decimal places, the tolerance is +/-0.05.)
The maximum output?
units per hour
The minimum output?
units per hour


(c) Compute the efficiency.

(Round your answer to 2 decimal places, the tolerance is +/-0.05.)
Efficiency = %

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    Chapter 10, Problem 2
    Fresh Foods Grocery is considering redoing its facility layout. The from–to matrix showing daily customer trips ...
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answered the question Feb 23, 2013 at 11:49pm
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Sol: Problem (2)

Current layout
Proposed layout

Sol: Problem (6)

Current layout
Proposed layout

Sol: Problem (8)

Sol: Problem (10)...