Distance a to calculate the resistance of three-layer backfill.

Symbol
$a_{\mathrm{T}}$
Unit
m
Formulae
$H_{\mathrm{c}} - s_{\mathrm{1}} - s_{\mathrm{2}}$
Related
$H_{\mathrm{c}}$
Used in
$c_{\mathrm{T}}$
$R_{\mathrm{q13}}$
$R_{\mathrm{q23}}$