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2. Installation Conditions
Coverage heights with shaft extension in the green
zone.
The maximum earth coverage from tank shoulder
“A” results from the maximum length of the original
shaft extension and is 780 mm maximum.
This may not be further lengthened, but can be
shortened to 400 mm minimum if required.
The earth coverage over tank cover “B” is 200 mm
The tanks may not be installed in areas used by
passenger cars.
The tanks may not be installed in the groundwa-
ter/artesian water. Even if it is expected that
groundwater/artesian water occurs only occasional-
ly, this must be led off by a drainage facility.
As the occurrence of groundwater/artesian water
can be excluded only with difficulty, we recommend
the installation of a drainage line as a general rule.
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