Question

The route sheet for a part is as follows: A-E-D-C-B-A-F One thousand pieces will flow through from the first machine A to the final machine F based on the given sequence of operations. A unit load size of 50 is initially specified at the first machine. However, due to lot- sizing decisions the unit load size is doubled after processing on Machine C. If one vehicle (e.g., lift truck) is used to transport the unit loads from machine to machine, determine the total number of trips that the vehicle has to make assuming that the vehicle capacity is one unit load and the vehicle will stop at point F after it is done. One solution is given below. Propose another case with a different assumption and show that the total number of trips is different in your solution. One solution example: Assuming the vehicle will make the following trips: A-E-A-E-D-E-D-C-D-C-B-A-F A E D C B A F There are 12 trips for every 100 loads. The total number of trips is thus 12(1000/100)=120 trips.

Answer 1

Another solution

A-E-D-C-A-E-D-C-B-A-F = 10 TRIPS for 100 load = 100 trips in all

Suppose we assume vehicle capacity = 2 unit loads

in whics case , the solution can be

A-E-D-C-B-A-F = 6 trips for 100 load = 60 trips in all