The trim line at PW is a small subassembly line that, along with other such lines, feeds intothe final chassis line. The entire assembly line, which consists of more than 900workstations, is to make PW's new E cars. The trim line itself involves only 13 workelements and must handle 20 cars per hour. Work-element data are as follows:Work ElementABCDEFGHILMTime (Minutes)1.80.41.61.50.70.50.81.41.41.40.51.00.8Immediate Predecessor(s)NoneNoneNoneAAEBсDF, GHJI, K, La. Draw a precedence diagram.b. What cycle time (in minutes) results in the desired output rate?c. What is the theoretical minimum number of stations?

A network diagram is a graphical representation of project which identify the activity relationship…

Answered: The trim line at PW is a small…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter4: Linear Programming Models

Section: Chapter Questions

Problem 111P

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The trim line at PW is a small subassembly line that, along with other such lines, feeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW’s new E cars. The trim line itself involves only 13 work elements and must handle 20 cars per hour. Work-element data are as follows: Work Element Time (Sec) Immediate Predecessor(s) A B C DE F G H I J K L M 1.8 0.4 1.6 1.5 0.7 0.5 0.8 1.4 1.4 1.4 0.5 1.0 0.8 None None None A A E B C D F,G H J I,K,L a. Draw a precedence diagram.b. What cycle time (in minutes) results in the desired output rate?c. What is the theoretical minimum number of stations?d. Use the longest work element decision rule to balance the line and calculate the efficiency of your solution.e. Use the most followers work element decision rule to balance the line and calculate the efficiency of your solution.
An assembly line with 17 tasks is to be balanced. The longest task is 2.4 minutes, and the totaltime for all tasks is 18 minutes. The line will operate for 450 minutes per day.a. What are the minimum and maximum cycle times?
The trim line at PW is a small subassembly line that, along with other such lines, feeds into the final chassis line. The entire assembly line, which consists of more than 900 workstations, is to make PW’s new E cars. The trim line itself involves only 13 work elements and must handle 20 cars per hour. Work-element data are as follows Work Element Time (Sec) Immediate Predecessor(s) A 2.4 None B 0.5 None C 2.1 None D 1.8 C E 1.1 B F 0.9 A G 2 A H 0.7 F I 0.7 D J…
Bill builds benches in a small shop and he plans to operate five 8-hour days perweek. Each bench has two ends and a top. It takes 5 minutes to cut and sand eachend and 2 minutes to make each top. Assembly requires 8 minutes per bench, andpainting requires 5 minutes per bench. Bill has one employee who makes the topsand ends. Bill will do the final assembly and painting. He also plans 1 hour per dayfor setup and teardown for each department.a. How many benches should he plan to build per week?b. How many hours per week are required for each person?c. Suggest ways to increase the number of benches produced per week
Consider a two-station production line. Station 1 consists of a single machine with an average processing times of 1 hours per job, while Station 2 have two parallel machines which are identical with average processing times of 2 hours per job. What are the rate of the bottleneck and average raw process time for this line? rb = 1 parts/hour; To=2 hours. rb = 1 parts/hour; To=3 hours. rb = 0.5 parts/hour; To=2 hours. rb = 0.5 parts/hour; To=3 hours.
An assembly line has 10 serial stations with process times of 1, 2, 3, 4,..., 10 respectively. The process time of the system is: a) 550% of its process cycle time. b) 18.18% of its process cycle time. c) 50% of its process cycle time. d) 100% of its process cycle time.
An assembly line for inkjet printers is composed of 8 persons performing different tasks. Compute forthe cycle time if the line has an 8-hour shift and requires 95 units to be finished in one shift.
True or False: In the Theory of Constraints (TOC), the primary goal is to optimize individual processes within an organization rather than focusing on the overall system's performance.
The trim line at PW is a small subassembly line that, alongwith other such lines, feeds int1, o the final chassis line.The entire assembly line, which consists of more than 900workstations, is to make PW’s new E cars. The trim line itselfinvolves only 13 work elements and must handle 20 cars perhour. Work-element data are as follows:Work Element Time (Sec) Immediate Predecessor(s)A 2.4 NoneB 0.5 NoneC 2.1 NoneD 1.8 CE 1.1 BF 0.9 A G 2 AH 0.7 FI 0.7 DJ 1.8 H, EK 1.3 JL 1.9 GM 1.1 L, I, Ka. Draw a precedence diagram.b. What cycle time (in minutes) results in the desired outputrate?c. What is the theoretical minimum number of stations?d. Use the longest work element decision rule to balance theline and calculate the efficiency of your solution.e. Use the most followers work element decision rule tobalance the line and calculate the efficiency of yoursolution.
XYZ is famous for homemade pizzas which are crisp with thin crust and varied toppings giving the pizzas fabulous tastes. XYZ· is revamping its order processing and pizza-making process. In order to deliver fresh pizza fast, six work elements must be completed as shown in the table below :Element Description Precedence Time (in min)A Receive order - 2·0B Shape dough A 1·0C Prepare toppings A 2·0D Assemble pizza B, C 3·0E Bake pizza D 3·0F Deliver pizza E 3·0Construct a precedence diagram for the process.If the demand is 120 pizzas per night (5:00pm to 1:00am), compute the cycle time for the process. Compute the lead time for the process.What is the theoretical minimum number of workstations needed to achieve the required production?How will you balance the production line to produce and deliver 120 pizzas per night? What is the actual minimum number of workstations needed?
A furniture factory makes two types of wooden tables,large and small. See the flowchart below.SetupTime,MinutesRun Timeper Piece,MinutesCapacity,Piecesper HourWood cutting 30 5 15Make four legs 60 10 10Make tops 60 12 8Finish the wood 20 8 12Assemble and ship 20 17 14 Small tables are made in batches of 100, and large tables are made in batches of 50. A batch includes a fixed setup time for the entire batch at each process step and a run time for each piece in the batch. Both large and small tables have the same processing times. The capacities of each process step are given, and apply to production of either type of table, as shown in the flowchart.a. What is the capacity of the system, and what is the bottleneck?b. What are the throughput times for batches of large and small tables?c. When producing at a rate of six small tables per hour on average, how many tables will be in the system?
I already find a. I need help with b Bill's Barbershop has two barbers available to cut customer's hair. Both barbers provide roughly the same experience and skill, but one is just a little bit slower than the other. The process flow below shows that all customers go through steps B1 and B2 and then can be served at either of the two barbers at step B3. The process ends for all customers at step B4. The numbers in parentheses indicate the minutes it takes that activity to process a customer. b. What single activity is the bottleneck for the entire process? B what?

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