This research deals with the minimum cost design of reinforced concrete T-beams according to the Syrian code. The aim is to minimize the total cost of the beam while respecting all the design requirements. Traditional method depend on a set of suppositions, in the opposite this methodology aim to reach the optimal solution among a set of constraints with respect the objective function. So that, using this methodology leading to the minimum cost reinforced section design. This research is shown that the problem can be formulated in a nonlinear mathematical programming format. Several cases are used to explain the applicability of the formulation in accordance with the current Syrian code. Traditional method of Syrian code has been used to design sections in this paper, utilizing the nonlinear programming method provided by Lingo14.0 software from LINDO Systems Inc. The comparison of the results shows that important saving can be obtained at the total cost of a reinforced concrete T-beams design.