This experiment investigates the stress, deflection, and strain of a simply supported beam under increasing loads. A steel beam was placed on a testing machine and loaded incrementally up to 1000 lbs while measuring deflection with a dial indicator and strain with a gauge. The results were used to calculate and graph the beam's stress, deflection, strain and compare experimental values to theoretical predictions based on beam formulas. The graphs showed a direct proportional relationship between load and both deflection and stress.