The depth of laying is defined as:

• center axis for directly buried cables or heat sources
• center of the duct/tunnel for cables in ducts/tunnel
• center of the group for cables/ducts in trefoil formation
• at the middle on the bottom of the trough

Its value is corrected by $L_{psc}$ if the calculation option for point source correction is activated.

Its value is corrected by $d_{im}$ if the calculation option for non-isothermal earth surface is activated.

Symbol
$L_{\mathrm{cm}}$
Unit
m
Formulae
 $\frac{L_{\mathrm{c}}}{1000}$ cables and heat sources $L_{\mathrm{cm}} - L_{\mathrm{psc}} + d_{\mathrm{im}}$ cables and heat sources $L_{\mathrm{cm}} - L_{\mathrm{psc}} + d_{\mathrm{im}}$ tunnel
Related
$d_{\mathrm{im}}$
$L_{\mathrm{c}}$
$L_{\mathrm{psc}}$
Used in
$\beta_{\mathrm{6}}$
$\beta_{\mathrm{t}}$
$d_{\mathrm{f}}$
$\Delta \theta_{\mathrm{e_{\mathrm{t}}}}$
$\gamma_{\mathrm{t}}$
$\mathrm{Gr}_{\mathrm{L}}$
$L_{\mathrm{c}}$
$L_{\mathrm{cni}}$
$L_{\mathrm{deep}}$
$L_{\mathrm{psc}}$
$T_{\mathrm{e}}$
$u$