A small formwork subcontractor is awarded to erect formwork. It has been estimated 75labor-days. The daily production rate of one worker is 25 m2. Calculate the number of days required to complete the job if the subcontractor has 5 crew, each crew made up of three workers.
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- Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:Tasks Description Task Time(InSeconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served.…Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has dividedits normal drive-through service process into the following tasks:Tasks Description Task Time(InSeconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer 10 B,E Currently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served.…The normal time to perform a certain manual work cycle is 3.47 min. In addition, an irregular work element whose normal time is 3.70 min must be performed every 10 cycles. One work unit is produced each cycle. The PFD allowance factor is 14%. Determine (a) the standard time per piece and (b) how many work units are produced during an 8-hour shift at 100% performance, and the worker works exactly 7.018 hr, which corresponds to the 14% allowance factor. (c) If the worker’s pace is 120% and he works 7.2 hours during the regular shift, how many units are produced?
- Kiko Teddy Bear is a manufacturer of stuffed teddy bears. Kiko would like to be able to produce 40 teddy bears per hour on its assembly line. The following information will assist in answering the questions that follow: Task Information for Kiko Teddy Bear Work Element Task Description Immediate Predecessor Task time (in seconds) A Cut teddy bear pattern None 90 B Sew teddy bear cloth a 75 C stuff teddy bear b 50 D glue on eyes c 20 E glue on nose c 15 F sew on mouth c 35 G attach manufacturer's label b 15 H Inspect and pack teddy bear d,e,f,g 40 a. Draw a precedence diagram. b. What cycle time would provide the desired output? c. What is the maximum possible output of the line? d. What is the theoretical minimum number of workstations using the cycle time computed in” b “ above? e. Assign tasks to workstations using the cycle time in “b” above. f. Calculate the efficiency and idle time percentage of the line.The Sun River beverage company is a regional producer of teas, exotic juices, and energy drinks. With an interest in healthier lifestyles, there has been an increase in demand for its sugar-free formulation. The final packing operation requires 13 tasks. Sun River bottles its sugar-free product 5 hours a day, 5 days a week. Each week, there is a demand for 3,000 bottles of this product. TASK TIME (MINUTES) PRECEDING TASK 1 0.1 — 2 0.1 1 3 0.1 2 4 0.2 2 5 0.1 2 6 0.2 3, 4, 5 7 0.1 1 8 0.1 7 9 0.2 8 10 0.1 9 11 0.2 6 12 0.2 10, 11 13 0.1 12 Using the following data, solve the assembly-line balancing problem and calculate the efficiency of your solution. Use the longest task time for your decision criteria. Note: Round your answer to the nearest whole percent.An assembly task was broken down into four elements, and timed using the continuous timing method. The resulting data and performance ratings are provided below. Calculate the total standard time for this task. Element 1 2 3 4 Watch Time 1.85 2.96 5.42 7.10 Observed Time Rating 95 105 120 115 Normal Time Total ST Standard Time
- Karina Nieto works for New Products Inc., and one of hermany tasks is assigning new workers to departments. Thecompany recently hired six new employees and would likeeach one to be assigned to a different department. The em-ployees have completed a two-month training session ineach of the six departments from which they received theevaluations shown below (higher numbers are better).Determine how the new employees should be assigned todepartments so that overall performance is maximized.Rockness Recycling refurbishes rundown business students. The process uses a moving belt, which carries each student through the five steps of the process in sequence. The five steps are as follows: STEP DESCRIPTION TIME REQUIREDPER STUDENT 1 Unpack and place on belt 1.2 minutes 2 Strip off bad habits 1.0 minutes 3 Scrub and clean mind 1.5 minutes 4 Insert modern methods 0.8 minute 5 Polish and pack 1.0 minutes One faculty member is assigned to each of these steps. Faculty members work a 40-hour week and rotate jobs each week. Mr. Rockness has been working on a contract from General Eclectic, which requires delivery of 2,000 refurbished students per week. A representative of the human resources department has just called complaining that the company hasn’t been receiving the agreed-upon number of students. A check of finished goods inventory by Mr. Rockness reveals that there is no stock left. a. Calculate the maximum output for each step. b. Which step…Angelinos are famous for making films. In this hypothetical scenario, you are the executive producer of a film project. You have the following work breakdown structure with time in months and cost in millions of dollars: ID IP T ES EF LS LF ST NC A - 3.0 ? ? ? ? ? 8.0 B A 5.0 ? ? ? ? ? 7.0 C A 8.0 ? ? ? ? ? 7.0 D A 4.0 ? ? ? ? ? 12.0 E D 3.0 ? ? ? ? ? 13.0 F B,C,E 4.0 ? ? ? ? ? 9.0 Note: IP - Immediate Predecessor: T = NT = Normal Time: ES - Earliest Start: EF = Earliest Finish: LS - Latest Start: LF - Latest Finish; ST = Slack Time: NC = Normal Cost. (a)Based on the table, draw an AON project network with activities in circles. Specify activity times in the project network. (b)Calculate ES, EF, LS, LF, and ST for all activities based on either the table method or the boxed AON method (choose only one method). Find the critical path. Identify the activity or activities with the most slack time. (c)Find the total normal cost of the film. Find the normal cost on…
- Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has divided its normal drive-through service process into the following tasks:Tasks Description Task Time(In Seconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer10 B,ECurrently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants to increase its drive-through capacity to 60 cars per hour by forming a multi-window line. Calculate the efficiency of the newly design process.Rock View Restaurant is a new fast food restaurant chain. The Operations Manager has divided its normal drive-through service process into the following tasks:Tasks Description Task Time(In Seconds)PredecessorsA Take order 25 NoneB Receive payment 20 AC Gather drinks 35 AD Gather food 32 AE Put food etc. in bag 25 C,DF Give food to customer10 B,ECurrently, Rock View Restaurant has a single window with one person who takes the order, gather the food, collects the money and gives the food to the customer. This takes an average of 147 seconds per customer so only 25.5 cars can be served. Rock View Restaurant wants to increase its drive-through capacity to 60 cars per hour by forming a multi-window line. Using the LOT heuristic, assign the tasks to the windows to produce the desired service rate making sure that the precedence relationship is maintained.v. Calculate the efficiency of the newly design processAn assembly line is to be designed to operate 7½ hours per day and supply a steady demand of 300 units per day. Here are the tasks and their performance times: TASK PRECEDING TASKS PERFORMANCETIME (SECONDS) A — 70 B — 40 C — 45 D A 10 E B 30 F C 20 G D 60 H E 50 I F 15 J G 25 K H, I 20 L J, K 25 What is the workstation cycle time required to meet the desired output rate? What is the theoretical minimum number of workstations required to meet the desired output rate? Note: Round up your answer to the next whole number. Assign tasks to workstations using the longest operating time. What is the efficiency of your line balance, assuming it is running at the cycle time determined in part b? Note: Round your answer to 1 decimal place. Suppose demand increases by 10 percent. How would you react to this? Assume that you can operate only 71/2 hours per day. Note: Round your answer for cycle time down to the nearest whole number. Round your…