Various models have been developed,Sor the designing of distinct objects, Sor applications like Sent designing, Computer Aided Design (CAD), Computer Aided Engineering (CAE), etc. Some methods are better suited for controlling the shape of the curve on an internal, while others ave better suited for controlling the shape at the individual control points. This work reviews C-2 rational splines with interval tension [3,5] and extends this work for the modelling of interpolatory curves and surfaces through B-spline formulation.