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Thickness from object to top of bedding layer

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

Symbol
$s_{b3}$
Unit
m
Formulae
$L_{cm}-s_{b1}-s_{b2}$
Related
$L_{cm}$
Depth of laying [m]
$s_{b1}$
Thickness of surface layer [m]
$s_{b2}$
Thickness of middle layer [m]
Used in
$d_{b3}$
Distance c of multi-layer backfill [m]
$R_{q11}$
Thermal resistance 11 of multi-layer backfill [K.m/W]
$R_{q21}$
Thermal resistance 21 of multi-layer backfill [K.m/W]
$R_{q22}$
Thermal resistance 22 of multi-layer backfill [K.m/W]
$s_{b4}$
Thickness from object to bottom of bedding layer [m]