The third layer was a 5.3-32.2 m thick 14-47 [ohm]m resistivity clay layer and sandy layer having 755 [ohm]m resistivity and 0.9 m thickness, weathered layer
having 55 [ohm]m resistivity and 16.5m thickness and 122-518 [ohm]m resistivity fractured rock, and a 924 [ohm]m fresh basement.
The results indicate that the top layer with a resistivity of 10.2ohm-m and a weathered layer
of resistivity of 58.9 ohm-m, have of thicknesses 1.43m and 8.18m, respectively.
The green-oak cladding was carefully selected for economy and long-life.(6) The silver-grey weathered layer
which forms eventually protects the oak board from the loss of its natural tannin protection.
K14 is located in the area of the Cista granitoid massif where the weathered layer
is up to 50 m thick.