As per our understanding, FAR is defined as The quotient obtained by dividing the total covered area (plinth area) on all floors multiplied by 100 by the area of the plot. FAR = Total covered area of all floors x 100 / Plot Area
As per our understanding, Dwelling Unit is defined as an independent housing unit with separate facilities for living, cooking (maximum one kitchen), and sanitary requirement.
Floor area ratio (FAR) can sometimes also be called floor space ratio (FSR), floor space index (FSI), site ratio or plot ratio. In India, both floor area ratio (FAR) and floor space index (FSI) is used. To clarify the difference between the two-FAR is a ratio, while the latter, FSI, is an index. Index numbers are values expressed as a percentage of a single base figure. Thus, an FAR of 1.5 is translated as an FSI of 150%.
As discussed earlier, every city is just like a structure and therefore is constrained by the capacity it can withstand. If you go beyond this capacity then it can lead to various issues.