Also, weighted values of 0.5 have been assigned to both objective functions. In Table \ref{tab:3}, values of objective function of Pareto’s spots and corresponding membership function are displayed. From comparing the membership function of Pareto’s answers with Fig. \ref{253454} can be said that spot 7 is the best of problem’s answer. Corresponding planning with this answer has been brought in Table \ref{tab:4}. In Table  \ref{tab:5}, the obtained results for this scenario have been compared with reference \cite{Foroud_2010}. The results states that however investment cost in the planning period in reference \cite{Foroud_2010}  is almost half of the gained investment cost in this paper, but the cost of congestion lines is very high in this reference.