Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is

A. $${{\text{p}}_{\text{t}}} = \frac{{3{{\text{H}}^3}{\text{p}}}}{{2\pi {{\text{Z}}^5}}}$$

B. $${{\text{p}}_{\text{t}}} = \frac{{2{{\text{H}}^3}{\text{p}}}}{{3\pi {{\text{Z}}^5}}}$$

C. $${{\text{p}}_{\text{t}}} = \frac{{{\text{3}}{{\text{H}}^3}{\text{p}}}}{{2{{\text{Z}}^5}}}$$

D. $${{\text{p}}_{\text{t}}} = \frac{{{\text{2}}\pi {{\text{H}}^3}{\text{p}}}}{{3\pi {{\text{Z}}^5}}}$$

E. None of these

Answer: Option A