public
Base width
$$ l_{base} = 0.424 \:
m $$
Cross sectional area
$$ A_{conv_{3}} = {\left({ l_{base} + {( b_{belt} - l_{base} ) \over 2} \cdot \cos( \lambda_{idler_{rad}} ) }\right) \cdot {( b_{belt} - l_{base} ) \over 2} \cdot \sin( \lambda_{idler_{rad}} ) + \left({ {( l_{base} + \left({ b_{belt} - l_{base} }\right) \cdot \cos( \lambda_{idler_{rad}} ) ) \over 2 }}\right) ^ 2 \cdot \tan( \beta_{surcharge_{rad}} )} \:, m^2 $$
