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

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