# Thickness from object to lower boundary of bedding layer

Thickness of the lower part of the backfill area around the cables in a multi-layer backfill arrangement.

Symbol
$s_{4}$
Unit
m$^2$
Formulae
$H_{T} - H_{c}$
Related
$H_{c}$
Used in
$R_{q21}$
$R_{q22}$
$R_{q31}$