How to calculate Incentive FSI FOR REDEVELOPMENT as per UDCPR .

Redevelopment of multi-dwelling buildings of owner / society.
i) FSI allowed for redevelopment shall be FSI of existing authorized building and 10%incentive FSI shall be allowed on the FSI, TDR, premium FSI etc. consumed in the existing building. This shall be subject to maximum building potential mentioned in Regulation No.6.1 or 6.3, as the case may be. However, in case of buildings belonging to EWS / LIG group, 10% incentive FSI or 10 sq.m. built-up area per tenement, whichever is more, shall be allowed as incentive FSI.
Such incentive FSI shall not be applicable for redevelopment of existing bunglow.
CASE STUDY-
1)PERMISSIBLE AS PER UDCPR IS AS-
BASIC FSI-2
PREMIUM-0.3
TDR-0.5
2)PREVIOUS SANCTIONED b/UP-2113 SQ.M