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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-1 Practice Problems Problem 1: As in most kitchens, the baking ovens in Lori’s Kitchen in New Orleans are located in one area near the cooking burners. The refrigerators are located next to each other as are the dishwashing facilities. A work area of tabletops is set aside for cutting, mixing, dough rolling, and assembling of final servings, although different table areas may be reserved for each of these functions. Given the following Interdepartmental Activity Matrix, develop an appropriate layout for Lori’s Kitchen. ABCD The present layout is below with a distance of 10 feet between adjacent areas.

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-2 Practice Problems Problem 1: As in most kitchens, the baking ovens in Lori’s Kitchen in New Orleans are located in one area near the cooking burners. The refrigerators are located next to each other as are the dishwashing facilities. A work area of tabletops is set aside for cutting, mixing, dough rolling, and assembling of final servings, although different table areas may be reserved for each of these functions. Given the following Interdepartmental Activity Matrix, develop an appropriate layout for Lori’s Kitchen. ABCD The present layout is below with a distance of 10 feet between adjacent areas. Interdepartmental Activity Matrix Cooking burners (A)Refrigerator (B)Dishwashing (C)Work area (D) Cooking burners (A)—719312 Refrigerator (B)—482 Dishwashing (C)—222 Work area (D)—

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-3 Practice Problems Problem 1: As in most kitchens, the baking ovens in Lori’s Kitchen in New Orleans are located in one area near the cooking burners. The refrigerators are located next to each other as are the dishwashing facilities. A work area of tabletops is set aside for cutting, mixing, dough rolling, and assembling of final servings, although different table areas may be reserved for each of these functions. Given the following Interdepartmental Activity Matrix, develop an appropriate layout for Lori’s Kitchen. ABCD The present layout is below with a distance of 10 feet between adjacent areas. Interdepartmental Activity Matrix Cooking burners (A)Refrigerator (B)Dishwashing (C)Work area (D) Cooking burners (A)—719312 Refrigerator (B)—482 Dishwashing (C)—222 Work area (D)— Load * Distance A to B7 * 1070 A to C193 * 203860 A to D12 * 30360 B to C4 * 1040 B to D82 * 201640 C to D222 * 102220 Total8190

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-4 Practice Problems Problem 1: As in most kitchens, the baking ovens in Lori’s Kitchen in New Orleans are located in one area near the cooking burners. The refrigerators are located next to each other as are the dishwashing facilities. A work area of tabletops is set aside for cutting, mixing, dough rolling, and assembling of final servings, although different table areas may be reserved for each of these functions. Given the following Interdepartmental Activity Matrix, develop an appropriate layout for Lori’s Kitchen. ABCD The present layout is below with a distance of 10 feet between adjacent areas. Interdepartmental Activity Matrix Cooking burners (A)Refrigerator (B)Dishwashing (C)Work area (D) Cooking burners (A)—719312 Refrigerator (B)—482 Dishwashing (C)—222 Work area (D)— Load * Distance A to B7 * 1070 A to C193 * 203860 A to D12 * 30360 B to C4 * 1040 B to D82 * 201640 C to D222 * 102220 Total8190 From the Activity Matrix, C and D should be next to each other and A should be next to C. The other relationships are minor by comparison. One possible solution is: BACD Load * Distance A to B7 * 1070 A to C193 * 101930 A to D12 * 20240 B to C4 * 2080 B to D82 * 302460 C to D222 * 102220 Total7000

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-5 Practice Problems Problem 1: As in most kitchens, the baking ovens in Lori’s Kitchen in New Orleans are located in one area near the cooking burners. The refrigerators are located next to each other as are the dishwashing facilities. A work area of tabletops is set aside for cutting, mixing, dough rolling, and assembling of final servings, although different table areas may be reserved for each of these functions. Given the following Interdepartmental Activity Matrix, develop an appropriate layout for Lori’s Kitchen. ABCD The present layout is below with a distance of 10 feet between adjacent areas. Interdepartmental Activity Matrix Cooking burners (A)Refrigerator (B)Dishwashing (C)Work area (D) Cooking burners (A)—719312 Refrigerator (B)—482 Dishwashing (C)—222 Work area (D)— Further improvement may be possible. Try analyzing the following layouts. ACBDACDB Load * Distance A to B7 * 30210 A to C193 * 101930 A to D12 * 20240 B to C4 * 2080 B to D82 * 10820 C to D222 * 102220 Total5500 Load * Distance A to B7 * 20140 A to C193 * 101930 A to D12 * 30360 B to C4 * 1040 B to D82 * 10820 C to D222 * 204440 Total7730

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-6 Problem 2: A firm must produce 40 units/ day during an 8-hour workday. Tasks, times, and predecessor activities are given below. Determine the cycle time and the appropriate number of workstations to produce the 40 units per day. Practice Problems TaskTime (Minutes)Predecessor(s) A2— B2A C8— D6C E3B F10D, E G4F H3G Total38 minutes

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-7 Problem 2: A firm must produce 40 units/ day during an 8-hour workday. Tasks, times, and predecessor activities are given below. Determine the cycle time and the appropriate number of workstations to produce the 40 units per day. Practice Problems TaskTime (Minutes)Predecessor(s) A2— B2A C8— D6C E3B F10D, E G4F H3G Total38 minutes Cycle time = = = = 12 minutes/cycle Production time available Units required 8 hrs * 60 minutes/hr 40 units 480 40 = = = = 3.17 stations or 4 workstations Minimum number of workstations t i Cycle time 38 minutes 12 minutes/cycle Work time required Cycle time

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-8 Problem 2: A firm must produce 40 units/ day during an 8-hour workday. Tasks, times, and predecessor activities are given below. Determine the cycle time and the appropriate number of workstations to produce the 40 units per day. Practice Problems TaskTime (Minutes)Predecessor(s) A2— B2A C8— D6C E3B F10D, E G4F H3G Total38 minutes Cycle time = = = = 12 minutes/cycle Production time available Units required 8 hrs * 60 minutes/hr 40 units 480 40 = = = = 3.17 stations or 4 workstations Minimum number of workstations t i Cycle time 38 minutes 12 minutes/cycle Work time required Cycle time

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-9 Practice Problems Problem 3: Given a cycle time of 4 minutes, develop an appropriate layout. TaskTimeElement Element (Minutes)Predecessor A1— B1A C2B D1B E3C, D F1A G1F H2G I1E, H

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-10 Practice Problems Problem 3: Given a cycle time of 4 minutes, develop an appropriate layout. TaskTimeElement Element (Minutes)Predecessor A1— B1A C2B D1B E3C, D F1A G1F H2G I1E, H Total13 minutes = Minimum number of workstations t i Cycle time 13 4 = 3 1 / 3 stations or 4 workstations

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PowerPoint presentation to accompany Heizer/Render – Principles of Operations Management, 5e, and Operations Management, 7e © 2004 by Prentice Hall, Inc., Upper Saddle River, N.J. 07458 9-11 Practice Problems Problem 3: Given a cycle time of 4 minutes, develop an appropriate layout. TaskTimeElement Element (Minutes)Predecessor A1— B1A C2B D1B E3C, D F1A G1F H2G I1E, H Total13 minutes = Minimum number of workstations t i Cycle time 13 4 = 3 1 / 3 stations or 4 workstations Some possible solutions: StationTasksTasks 1A, B, FA, B 2C, DC, D 3EF, G, H 4G, H, II Efficiency = = = 0.8125 81% 13 minutes 4 station * 4 minutes 13 16

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