# Inner width

For cables in tunnels, this is the inner width of the tunnel (only applicable for rectangular tunnels).

For cables in troughs, this is the inner width of the trough.

Symbol
$w_{t}$
Unit
m
Used in
$A_{t}$
$Di_{t}$
$Do_{t}$
$p_{tr}$
$T_{at}$
$T_{e}$
$T_{tr}$
$\theta_{at_{0}}$
$U_{ti}$