# 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
$\delta _{soil}$
$\tau$
Used in
$D_{x}$
$D_{x_{w}}$
$D_{x_{y}}$