Food-Processing-Plant-Design-layout

Food Processing Plant Design & layout
As shown in the above Table, the sample calculation should hopefully suffice to obtain the
site rating. Hence, site S3 with the highest rating of 83 is chosen.
4.6.3.1 Another weight-cum-rating method
Another weight-cum-rating method establishes a subjective scale common to all factors.
This involves assigning points against the subjective scale for each factor and assigns the
factor points of the subjective rating for each factor. For example, five subjective ratings-
Poor, Fair, Adequate, Good and Excellent are selected to be used in evaluating each site for
each factor. For each of the factors, adequate was assigned a value zero and then negative
and positive relative worth weights are assigned the subjective ratings below and above
adequate for each factor as given in following Table.
Table Decision matrix
Poor Fair Adequate Good Excellent
Fl Water supply -15 -12 0 6 10
F2 Appearance of site -3 -1 0 1 2
The range between minimum and maximum weight assigned to a factor in effect weights
that factor against all other factors in a manner equivalent to the weight-cum-rating method
described previous to this one. Each location site S1 to S4 are then rated by selecting the
applicable subjective rating for each factor for each location and the equivalent points of
that subjective factor rating assigned to the factor. Thus one can now obtain the following
Table.
Table Decision matrix
Factor
Potential sites
S1 S2 S3 S4
FI 0 -12 6 0
F2 0 -3 2 -1
F3 0 0 0 0
Site rating 0 -15 8 -1
Sample calculation: -15 = (-12) + (-3) + (0)
Accordingly, site S3 with the highest rating of 8 would be chosen.
32 www.AgriMoon.com