Factor for characteristic diameter

The factor for characteristic diameter by Dorison $q_x$ is used to calculate the characteristic diameter.

Symbol
$q_{x}$
Formulae
$\sqrt{2} \sqrt{\frac{\pi}{\delta _{soil} \tau}}$general case
$\frac{\sqrt{3} \sqrt{\frac{\pi}{\delta _{soil}}}}{360}$for daily transient load variations
$\frac{\sqrt{21} \sqrt{\frac{\pi}{\delta _{soil}}}}{2520}$for weekly transient load variations
$\frac{\sqrt{487} \sqrt{\frac{\pi}{\delta _{soil}}}}{87660}$for yearly transient load variations
Related
$\delta _{soil}$
Used in
$D_{x}$