In the study presented here, the problem of calculating deflection of stati-cally indeterminate continuous beams and structural frames is addressed. Theelastic line equation, taught in many standard courses in structural mechan-ics is used to determine the structure deflections.In the investigated method,the structure is divided into a simply supported members in which the elas-tic line equation is applied to calculate the deflection shape of the structure.The results are compared with the finite element method (FEM) and goodagreement is obtained. Moreover, the advantage of this method is that it issimplified, general, not time-consuming, and it can be standardised to thistype of structures.