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.4.e. Concrete of
grades such C20/25 C25/30 considered wa-
ter-impermeable concrete. func-
tional equipotential bonding cable must created in
the foundation.50 m
Maximum groundwater level
Ring earth electrode
Blinding layer
Spacer
Min. concrete cladding used corrosion
protection
Black trough
Connection lug, min. 1.4.3 White trough
The white trough construction consisting water-
impermeable concrete, i. Because the foundation
earther longer has contact with the earth here, an
additional ring earther must created.4.TBS
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2.
2. water cannot penetrate
right through the concrete.
Connection lug, min.2 Black trough
The black trough bitumen plastic seal sur-
rounding the structure all sides the area which
it contact with the earth.50 m
Maximum groundwater level
Ring earth electrode
Blinding layer
Spacer
Min. concrete cladding used corrosion
protection
White trough
TBS
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2018
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2020/01/10
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161
Chapter The external lightning protection system
. 1
