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The strength of reinforced concrete can be planned in various ways, either doing manual calculations, compressive strength testing, or testing using applications. Therefore, an accurate result approach can be obtained, one of which is by using the Response-2000 application program. This research aims to obtain the output results of the Response-2000 program in the form of deflection values, maximum load, crack width, and stiffness. The research was conducted by modeling beam specimens with dimensional variations but the cross-sectional area was the same as the total model of 10 samples. The results of the analysis show that with the same surface area but the shape of the shape and also the different dimensions of the beam greatly affect the deflection value, maximum load, crack width, and stiffness. Test object I1 has the smallest deflection value that is 7.524 mm and test object I2 has the largest deflection value, namely 19.759 mm. Of all the specimens experiencing flexural cracks, specimen I3 had the smallest crack width, namely 1.59 mm and specimen I2 had the largest crack width, namely 14.29 mm. The T2 specimen has the smallest stiffness value, namely 23.5 kN/mm and the I1 test object has the largest stiffness value, namely 91.4 kN/mm.

Effect of Cross Section Dimensions to Stiffness and Deflection on Reinforced Concrete Beams