A concrate sewerpipe is toble lod parallel to the ground slope of $\%0,5$ and is to be designed to carry $0,43\frac{m^3}{s}$ of starmwater run off. Estimate the required pipe diameter using

a$)$ The monning Eq$.$

b$)$ The Dorcy $-$ weisbach eq$.$

$S_0=0,005,=0,43\frac{m^3}{s},n=0,013$