[en] The shear strength of NSC (Normal Strength Concrete) has been extensively researched. However, very little data is available on the shear strength of HSC beams for fc > 6000 psi (40MPa). In this research, 35 beams with five values of longitudinal steel and seven values of shear span to depth (aid) ratio have been tested to study the effect of longitudinal steel and shear span to depth ratio. The results have been compared with the provisions of ACI 318-06 as well. The results have shown that shear failure is anticipated when the longitudinal steel ratio for p > 1 %. The shear strength of HSC normally increases with the increase of longitudinal steel and decreases with the increase in shear span to depth ratio, as exhibited in normal strength, but the failure is more sudden and brittle. The ACI 318 provisions for shear strength of beams are normally good predictors but for a/d >5. (author)