The following figure shows block-shear failure patterns when only the flange of a structural tee is connected via bolts. In each case in this figure, the shaded volume shows the portion of the cross-section that will remain in place, held by the bolts, while the remainder of the tee tears away under action of the tension force. Surfaces that are parallel to the direction of the load fail in shear, those that are perpendicular fail in tension.
The following HTML pages show 3-D models for each of the above cases. You may download these, then interact with the displayed image to see other views of the tee and the possible failure patterns. In the 3-D models, shear failure surfaces are coloured blue and tension failure surfaces are coloured yellow/orange/light brown.
Case 2
A shear failure area at the root of the web fillet and a tension failure area extending the width of the flange through two bolt holes.
$$ \begin{align} A_n &= A - (d-k) w - 2 h_d t\\ A_{gv} &= (e+s) w\\ U_t &= 1.0\\ \end{align} $$The tension area is calculated by deducting the stem area below the fillet from the total cross-sectional area (then subtracting the effect of the holes). That way we can properly included the effect of the stem-to-flange fillet.
Case 5
One shear failure through flange, one through the stem at the root of the fillet, and a tension failure area extending from one bolt hole to the flange tip on the opposite side of the stem.
$$ \begin{align} A_n &= A - (d-k)w - \left(\frac{b}{2}-\frac{g}{2}\right) t - 1.5 h_d t\\ A_{gv} &= (e+s)w + (e+s)t\\ U_t &= 0.6\\ \end{align} $$Case 6
One shear failure through flange, and a tension failure area extending from one bolt hole to the flange tip on the opposite side of the stem and through the depth of the stem.
$$ \begin{align} A_n &= A - \left(\frac{b}{2}-\frac{g}{2}\right)t - 1.5 h_d t\\ A_{gv} &= (e+s)t\\ U_t &= 0.6\\ \end{align} $$Cross-sections Showing Tension Area
The following figure shoes cross-sections that illustrate the area in tension, $A_{nt}$, for each of the above cases (except for Case 7 in which $A_{nt} = 0$). The illustration is for two lines of bolts in each flange, but it can be used for the above cases that consider only 1 line per flange. Simply ignore one of the lines in each case and remember that $g = G$:
