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15. Plan a balanced assembly line for a spring scale production department on the basis of the accompanying table. The plant averages 92% efficiency and would like to produce 750 units/day. Element Time Immediate Predecessor(s) 1, 2 2,3 3 4 4,5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 0.15 0.27 0.32 0.45 0.30 0.19 0.24 0.38 0.17 0.42 0.21 0.35 0.25 0.44 0.33 0.20 0.40 0.22 5,6 6 7,8 9 10, 11 11 12, 13 14, 15 16, 1? Prob. 15 Assume 8 hours per day. Hence 8 x 60 minutes per day Efficiency is 92%. Hence # of units to be produced per day 750/0.92 = 816 Cycle Time = 480/816 = 0.588 Using largest Candidate rule: 3,1 2,5 4 8,6 7,9 10 14 17 12, 11 15, 13 16, 18 Similar calculations for time at each station and efficiency can be done