Example: A firm produces three components. Components 1 and 2 have the same size and weight and are equivalent with respect to movement Component three is as twice as large. Moving two units of 1 or 2 is equivalent to moving 1 unit of component 3. There are five departments included in the layout: A, B, C, D and E The quantities to be produced and routing are provided below Construct a from-to chart for the following activity Production Quantities Component (per day) Routing 1 30 A-C-B-D-E 2 12 A-B-D-E 3 7 A-C-D-B-E To find the from to chart we need the volume for each components that is moved between each pair of departments. We put these values in the following table A B D E B D E culo First all components must be in equivalent size or weight so that the correct volume is calculated. Components 1 and 2 are equivalent but 3 is not equivalent to them. So we need to convert component 3 quantities to the equivalent amount of 1 or 2 quantities. We have 7 units of component 3, we know that moving 1 unit of 3 is equivalent to moving 2 units of 1 or 2, so every unit of 3 represent 2 units of 1 3 3 3 3 1 1 1 1 1 1 1 1 1 So 7 units of component 3 = 2x7=14 units of component 1. Don't try to convert the quantities of 1 or 2 to the equivalent amount of 3, for example dividing 30 by 2 or dividing 12 by 2 is not correct because you reduced the actual volume of components 1 and 2 to half