Problem 4.3 (a) The network of the Deluxe model 45 6 18 Punch (base) Form (base) S_assemble (base) 10 12 36 Start Separate Assemble Inspect 30 12 Punch (roof) Form (roof) TFT_Deluxe_Path1 = 10+45+6+18+12+36 = 127
Problem 4.3(b) TFT for 25% Deluxe and 75% standard 33.75 6 14.25 Punch (base) Form (base) S_assemble (base) 10 10.5 36 Start Separate Assemble Inspect 24 12 Punch (roof) Form (roof) TFT_Deluxe_Path1 = 10+33.75+6+14.25+10.5+36 = 110.5 The flow time efficiency is 110.5/4800 = 2.3%
Problem 4.3 (alternative way for part b using the network of the Standard model) The network of the Standard model is as follows 30 6 13 Punch (base) Form (base) S_assemble (base) 10 10 36 Start Separate Assemble Inspect 22 12 Punch (roof) Form (roof) TFT_Standard_path1 = 10+30+6+13+10+36 = 105 TFT_Deluxe = 127 0.75×105+0.25×127 = 110.5