water cannot penetrate
right through the concrete.50 m
Maximum groundwater level
Ring earth electrode
Blinding layer
Spacer
Min. Concrete of
grades such C20/25 C25/30 considered wa-
ter-impermeable concrete.4.
2. 1.4.
Connection lug, min. 1.TBS
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2. func-
tional equipotential bonding cable must created in
the foundation.e.3 White trough
The white trough construction consisting water-
impermeable concrete, i. concrete cladding used corrosion
protection
White trough
TBS
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161
Chapter The external lightning protection system
.50 m
Maximum groundwater level
Ring earth electrode
Blinding layer
Spacer
Min. Because the foundation
earther longer has contact with the earth here, an
additional ring earther must created.4. Connection lugs must routed into
the building such way that they are resistant to
pressurised water above the maximum groundwa-
ter level. Because the foundation
earther longer has contact with the earth here, an
additional grid ring earther must created. concrete cladding used corrosion
protection
Black trough
Connection lug, min.4.2 Black trough
The black trough bitumen plastic seal sur-
rounding the structure all sides the area which
it contact with the earth
