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Solutions Manual for Facilities Design, 5th Edition by Sunderesh Heragu (All Chapters) A+
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Solutions Manual for Facilities Design, 5th Edition by Sunderesh Heragu All Chapters 1 to 15 complete Verified editon ISBN: 9781000606928
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Created By: A SolutionSolutions Manual for Facilities Design, 5th Edition by Sunderesh Heragu (All
Chapters) A+
CHAPTER 1 - Introduction to Facility Design
1.4 Solutions
1. This is an open-ended question and could be given as a mini-project for students.
2. Design problems are those that have a longer time span, typically three to five years or more, whereas
planning problems have a shorter time span. Students will come up with a long list of design and planning problems
and Figure 1.1 should be of some help. Although it is desirable to solve the two problems simultaneously, so that a
solution satisfies design and operational performance measures, doing so makes the problem intractable and hard to
solve.
CHAPTER 2 – Supply Chain Design
2.6 Solutions
1. Students are encouraged to consult business publications and trade magazines to identify the supply chain
design and operational trends witnessed in the past 15 years.
2. Once again, a consultation of business publications and trade magazines will help the students identify
companies in the disruptive innovation space.
CHAPTER 3 – Logistics and Location Models
3.11 Solutions
1. As indicated in Section 3.1 as well as Chapter 1, facility location must be addressed in the very early stages of
facility design – as soon as the products to be produced and markets to be served have been identified.
1
,Created By: A Solution
2. Facility location is a sub-problem in logistics management. As defined in Section 3.1, logistics management
covers not only location, allocation, but also the distribution methods, costs, and a number of other logistics related
factors.
3. It should serve the needs of the company, minimize costs, must mesh well with the existing network of supply
chain of suppliers, plants and customers, etc. This is a good question for in-class discussion.
4. See Section 3.3.
5. See Section 3.3.
6. See Table 3.1.
7. This is an interesting project for undergraduate students that could be supplemented with in- class discussion.
8. Based on the calculations done in the table below, we find that site #6 is the best location based on the
subjective factors.
1.
Location Factors
0.15 0.2 0.4 0.25
Site Number 1 2 3 4 Score
1 90 40 80 70 71.00
2 100 30 80 50 65.50
3 50 80 85 60 72.50
4 60 90 60 75 69.75
5 90 30 65 80 65.50
6 90 30 85 85 74.75
2. Based on the calculations done in the table below, we find that site #3 is the best location based
on the subjective factors.
2
,Created By: A Solution
Location Factors
0.4 0.2 0.3 0.1
Site Number 1 2 3 4 Score
1 55 20 10 50 34
2 20 75 80 50 52
3 90 15 85 100 74.5
4 80 95 20 25 59.5
5 30 90 25 25 40
Explanation:
Site 1: 0.4(55) +0.2(20) +0.3(10) +0.1(10) = 34
Site 2: 0.4(20) +0.2(75) +0.3(80) +0.1(50) = 52
Site 3: 0.4(90) +0.2(15) +0.3(85) +0.1(100) = 74.5
Site 4: 0.4(80) +0.2(95) +0.3(20) +0.1(25) = 59.5
Site 5: 0.4(30) +0.2(90) +0.3(25) +0.1(25) = 40
3. Based on the calculations done in the table below, we find that site #6 is the best location based
on the subjective factors.
Location Factors
0.4 0.2 0.3 0.1
Site Number 1 2 3 4 Score
1 90 40 80 70 75
2 100 30 80 50 75
3 50 80 85 60 67.5
4 60 90 60 75 67.5
5 90 30 65 80 69.5
6 90 30 85 85 76
Explanation:
Site 1: 0.4(90) +0.2(40) +0.3(80) +0.1(70) = 75
Site 2: 0.4(100) +0.2(30) +0.3(80) +0.1(50) =75
3
, Created By: A Solution
Site 3: 0.4(50) +0.2(80) +0.3(85) +0.1(60) = 67.5
Site 4: 0.4(60) +0.2(90) +0.3(60) +0.1(75) = 67.5
Site 5: 0.4(90) +0.2(30) +0.3(65) +0.1(80) = 69.5
Site 6: 0.4(90) +0.2(30) +0.3(85) +0.1(85) = 76
4. Based on the calculations done in the table below, we find that site #3 is the best location based
on the subjective factors.
Location Factors
0.15 0.2 0.4 0.25
Site Number 1 2 3 4 Score
1 55 20 10 50 34
2 20 75 80 50 52
3 90 15 85 100 74.5
4 80 95 20 25 59.5
5 30 90 25 25 40
Explanation:
Site 1: 0.15(55) +0.2(20) +0.4(10) +0.25(10) = 18.75
Site 2: 0.15(20) +0.2(75) +0.4(80) +0.25(50) = 62.5
Site 3: 0.15(90) +0.2(15) +0.4(85) +0.25(100) = 75.5
Site 4: 0.15(80) +0.2(95) +0.4(20) +0.25(25) = 46.75
Site 5: 0.15(30) +0.2(90) +0.4(25) +0.25(25) = 38.75
5. We leave it as an exercise for the student to verify the results in Example 3.2 using the TSA.
6. We leave it as an exercise for the student to verify the results in Example 3.3 using a
transportation problem.
7. It is a trivial exercise for the student to verify the results in Example 3.3 using a transportation
problem.
8. Setting up the transportation problem for the two cases, we get the solutions shown below.
Because the site 1 solution has a cost of $56,000 and site 2 a cost of $62,000, we choose site
1.
4
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