CH job shop has four TASK MUST FOLLOw THIS TASK A Misschemical bath (D), finishi

Question

CH job shop has four TASK MUST FOLLOw THIS TASK A Misschemical bath (D), finishing (F), and plating dipping four work areas. The operations manager, Mary dsignedto (M), t following data for this job shop as it is has gathered the uaceniy lad out (Plan A). orkpieces Moved Between Work Areas Each Year Plan A It costs $2 to move What is the cost? 182 D, E, F 18 9.4 Roy Cr to move to a new, long by 40 feet wid distinct production about safety and i the building to faci See the following b Between Work Areas (Departments) in Feet Distances 20 10 It costs $0.50 to move 1 workpiece 1 foot in the job shop. Marrs's goal is to find a layout that has the lowest material han- ding cost. Determine cost of the current layout, Plan A, from the data above y One alternative is to switch those departments with the high loads, namely, finishing (F) and plating (P), which alters the distance between them and machining (M) and dipping (D), as Distances Between Work Areas (Departments) in Feet Plan B His foreman has cor loads of material tha the current building ing flow matrix Flow Matrix Betweer 20 10 What is the cost of this layout? FROM MATERIALS you to evaluate Plan C, which also switches Between Work Areas (Departments) in Feet Plan C now wants Materials ng (M) and drilling (D), below Welding25 25 20 10 Grinders50 Benders10 What is the cost of this layout? Finally, Creasey has distances between the 4 Which layout best layout is best from a cost perspec Three denar milling (M), drilling (D). and iment

Explanation / Answer

(a) Cost of current layout (Plan A) = SUM(number of workpieces moved between areas * distance between areas * cost to move one workpiece one foot)

= (6*20+18*12+2*8+4*6+2*10+18*4)*100*0.5 = $ 23,400

(b) Cost of layout (Plan B) = SUM(number of workpieces moved between areas * distance between areas * cost to move one workpiece one foot)

= (6*20+18*8+2*12+4*10+2*6+18*4)*100*0.5 = $ 20,600

(c) Cost of layout (Plan C) = SUM(number of workpieces moved between areas * distance between areas * cost to move one workpiece one foot)

= (6*20+18*10+2*6+4*8+2*12+18*4)*100*0.5 = $ 22,000

(d) Layout Plan B is the best, because it gives the lowest cost .

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