Graf NS3-600 Instructions De Montage page 26

2.3.2. Slope, embankment, etc.
During the installation of the tank in close proximity (<5 m) to a slope, mound or
embankment (greater than 5°), a statically calculated retaining wall must be built to
absorb the active earth pressure. The wall must exceed the tank dimensions by at least
500 mm and must have a minimum clearance of 1000 mm to the tank.
Saphir tank series
>1000
2.3.3. Ground water and cohesive (water-impermeable) soil (e.g. clay soil)
The tank must only be installed into groundwater/stratum water up to the levels specified
in the following table. If it is to be expected that groundwater/stratum water levels - even
if only occasionally - exceed these levels, it must be drained.
The drainage line may end up in a vertically installed DN 300 pipe, equipped with a
submersible pressure pump that drains the excess water. The pump must be inspected
in regular intervals.
Tankserie Saphir
Max.
Typ
NS3-300
NS3-400T, NS3-600,
NS6-600,
2. Installation conditions
Max.
max.
Grundwasserstand
[mm]
430
550
KLsepa.compact
Diamant tank series
Tankserie Diamant
Typ
NS 6-1300, NS 10-1300
NS 10-4000, NS 15-2000
h
1/2 h
max.
Grundwasserstand
[mm]
575 (1/2 h)
700 (1/2 h)
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