9.3.9.3.3 Maximum nominal shear stress and effective shear area
The maximum nominal shear stress, vn, shall be equal to or less than 0.2f ´ or 8 MPa as given by 7.5.c
The value of Acv shall:
(a) For rectangular, T- and Ι- section shapes be taken as product of the web (bw) width times the effective
depth, (d);
(b) For octagonal, circular, elliptical, and similar shaped section Acv shall be taken as the area enclosed
by the transverse reinforcemen