In doing so, the work area should first be divided into a
number of equal small areas which should be as nearly
square as possible. For example, for an ordinary medium-
2
sized work area of less than 50m where the lighting is at a
height of around 2.5m, the work area is normally divided
into a minimum of 16 small squares. For a work area of size
2
up to around 100m , the recommended minimum number of
small squares is 25. If the work area is even larger, a
minimum number of 36 small squares is recommended.