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Facility Layout Level 2 Reliance Office Systems is comparing two layouts for the design of its office building It has interviewed managers and has developed the following from tomar From To Matris for Reliance Omce Systems Trips Between Departments E A F 30 34 B SO 25 35 e 10 15 5 D E 30 F Dept. B c D 10 - Current Layout: F E A B D Rectilinear (Block) Distance between Departments - Present Layout A B D E F Depts. A B D E F Load-distance = 10,- 119 Proposed Layout D A B E F Rectilinear (Block) Distance between Departments - Present Layout A B D Depts. A B D E F Load-distance - 42, Which of the two layouts seems to be more efficient? Note: At the present time, we have used "block distances". The model can be enhanced by using actual distances between the centers of each department wing actual linear distances or hypotenuses. Additionally considerations can be made as the costs of moving various loads between departments may vary. There are a number of computer programs, such as ALDEP (automated layout design program) and CRAFT (computerized relative allocation of facilities technique), that can automale much of the decision making and calculation process. 2. Product Line Balancing Problem An assembly line must be designed to produce 40 containers per hour. The following data is provided. Task Immediate Predecessor Task Time (see) None 60 B 12 B 35 D A 55 E D 10 F E 50 F.C 5 120 Step 1. Deww the precedence relationship network Step 2. Determine the potential output rate per hour (day) Maximum Output Rate Available Time/hour Sum of Elemental Times sec./hr see/unit hour Step 3. Determine the takt time Takt Time (T) sec./kr Available Time (sec./hour) Forecast Demand (units/hour) SCC sont Max. Bottleneck Output Available Time (sec./hour) Bottleneck Task Time (sec./init) see.hr sec/ and orite hr Step 4. Compute the theoretical minimum number of work stations. sec. TM= work stations T sec./unit Step 5. Assign tasks to the work stations (balance the line) Work Station Eligible Tasks Task Selected Time Idle Step 6. Compute efficiency and balance delay. Eff (%) = N'T Balance Delay = 100%-Eff(%) = 121 3. Presto Frozen Pizza Company has determined that it needs anely line capable of produeing 60 pizzas per hour. The following information is given for the company and its process Step 1. Identify tasks, task times and precedence relationships (given above). Dew the precedence relationship chart Task Description Predecessor Tak Time A Roll out dough Nond 50 B Place on tray A 5 c Spread tomato sauce B 25 D Spread cheese C 15 E Add Meat #1 D 12 F Add Meat W2 D 10 G Add onions D 15 E,F,G 18 1 Pack in box H 15 Total Time 165 Shrink wrap Step 2. Determine the potential output rate per hour (day). Maximum Output Rate =- Available Time/hour Sum of Elemental Times sec./hr. sec./unit artits hour Step 3. Determine the takt time Available Time (sec./hour) Takt Time (7) Forecast Demand (units/hour) Sco/hr units/hr 500. unt Available Time (sec./hour) Max. Bottleneck Output = Bottleneck Task Time (see/uril) sec/lur sec./tant mits hr Step 4. Compute the theoretical minimum number of work stations. sec. TM = = work stations T sec./unit 122 Step 5. Assign tasks to the workstations (balance the line) Work Station Eligible Tasks Taal Selected Time Idie 1 2 3 4 Step 6. Compute efficiency and balance delay. Eff(%) NOT Balance Delay = 100%- Eff) =