Shear between web and flanges: the values of cotθf for the maximum longitudinal shear stress
Eurocode 2 part 1-1: Design of concrete structures 6.2.4 (4)
To prevent crushing of the compression struts in the flange, the longitudinal shear stress vEd should be satisfied:
| vEd ≤ ν fcd sinθf cosθf | (6.22) |
Recommendation
For the calculation of the maximum longitudinal shear stress, the recommended values of cotθf in the absence of more rigorous calculation are:
| 1,0 ≤ cotθf ≤ 2,0 | for compression flanges (45° ≥ θf ≥ 26,5°) |
| 1,0 ≤ cotθf ≤ 1,25 | for tension flanges (45° ≥ θf ≥ 38,6°) |
