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  • The distance between the fiber of maximum compressive stress and the neutral axis, c, is perpendicular to the neutral axis.

  • The value of k1 is determined using TS500 Table 7.1.

Concrete Class

C16

C18

C20

C25

C30

C35

C40

C45

C50

k1

0.85

0.85

0.85

0.85

0.82

0.79

0.76

0.73

0.70

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Nd means design axial compressive strength and Md means design flexural strength. Md takes different values for each axial force level. Therefore, a three-dimensional interaction failure surface shown in the picture above is formed. Nominal flexural strength Mn is calculated according to the assumptions described in title.

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Mathinline
body--uriencoded--$$ \normalsize M_d = 0.85f_%7Bcd%7D(b_wa)(d-\frac a 2) + N_d( \frac h 2 -(h-d) ) $$

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TSC One-Way Shear Strength

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