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A concrete dam holds $10\: m$ of static water as shown in the figure (not drawn to the scale). The uplift is assumed to vary linearly from full hydrostatic head at the heel, to zero at the toe of the dam. The coefficient of friction between the dam and the foundation soil is $0.45$. Specific weights of concrete and water are $24\: kN/m^3$ and $9.81\: kN/m^3$, respectively.

For NO sliding condition, the required minimum base width $B$ (in $m$ round off to two decimal places) is ________.