eng Science and Education Publishing American Journal of Mechanical Engineering 2328-4110 2018-07-20 6 2 66 74 10.12691/ajme-6-2-5 AJME2018625 article Elhadj Raouache eraouache@outlook.com, elhadj2m@gmail.com 1 Logzit Nacer 1 Zied Driss 2 Fares Khalfallah 3 Department of Civil Engineering, University B.B.A, Algeria Laboratory of Electromechanical Systems (LASEM), National School of Engineers of Sfax (ENIS), University of Sfax (US), B.P. 1173, Road Soukra km 3.5, 3038, Sfax, Tunisia Department of Physical Engineering, University of M'sila, Algeria Reinforced concrete beams must have an adequate safety margin against bending and shear forces. Therefore, it will perform effectively during its service life. The aim of this work is to optimize the parameters of strength reinforced concrete beam, such as strength concrete, of stirrup spacing, and stirrup inclined presenting the techniques of characterization. An optimization of the reinforced concrete beam parameters was developed using the Response Surface Methodology (RSM). A flexural test was performed on reinforced concrete beam, and an empirical relationship was developed and used to predict the optimized strength reinforced concrete beam parameters. http://pubs.sciepub.com/ajme/6/2/5/ajme-6-2-5.pdf reinforced concrete beam stirrups spacing shear flexural response surface methodology (RSM) mechanical properties