This paper presents an evaluation on the minimum shear reinforcement requir
ements given in the ACI, Canadian, and Turkish codes for high-strength conc
rete. Thirteen beams having the minimum shear reinforcement required by ACI
318-83, the Turkish Code, and the equations proposed in this paper were te
sted Concrete strength varied between so and 80 MPa (8700 and 11,600 psi).
For high-strength concrete (f(a)' > 69 MPa), the minimum shear reinforcemen
t requirements of the Turkish Code and ACI 318-95 are not very different fr
om one another Similarly, requirements of the 1994 Canadian Code (CSA A23.3
-94) are not too different from the proposed equation. In light of the test
results, the adequacy of code requirements are discussed. Emphasis is give
n to reserve strength ductility, and cracking.