The condition that the principal tensile stress is not to exceed the tensile strength of concrete yields a criterion of the type:

bw > (vu/ (I/s) ft(1-fcp/ft)1/2

bw > (vu/ (I/s) ft(1+fcp/ft)1/2

The condition that the principal tensile stress is not to exceed the t

1.	The condition that the principal tensile stress is not to exceed the tensile strength of concrete yields a criterion of the type:
A.	b<sub>w</sub> > (v<sub>u</sub>/ (I/s) f<sub>t</sub>(1-f<sub>cp</sub>/f<sub>t</sub>)<sup>1/2</sup>
B.	b<sub>w</sub> > (v<sub>u</sub>/ (I/s) f<sub>t</sub>(1+f<sub>cp</sub>/f<sub>t</sub>)<sup>1/2</sup>
C.	b<sub>w</sub> > (v<sub>u</sub>/ (I/s)
D.	b<sub>w</sub> > (v<sub>u</sub>/ (I/s) f<sub>t</sub>
Answer» C. b<sub>w</sub> > (v<sub>u</sub>/ (I/s)