They recommended that the addition of steel fibres in concrete must be within the volumetric percentages of between 0.75% and 1.75%. Later in 2007, Altun et al. studied the effects of adding SF on the mechanical properties of reinforced concrete (RC) beams. RC beams of grade C20 and C30 concretes were prepared with three (3) different SF dosages of 0, 30 and 60 kg/m3.