Insertion And Filling - Graf PLATIN XL Instrucciones Para Montaje Y Mantenimiento

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5. Installation and assembly
5.3

Insertion and filling

The tanks must be inserted, impact-free, into
the prepared trench using suitable equip-
ment. To avoid deformities, the tank is filled
1/3 with water before filling in the tank sur-
rounding.
Afterwards the surrounding (roundgrain
gravel, max. grain size 8/16) is then filled in
layers of max. 30 cm steps and is compact-
ed.
The individual layers as well as the medi-
al support column must be well-
compacted (manuel tamper). Damage to
the tank must be avoided during compaction.
Mechanical compaction machines must not
be used under any circumstances. The sur-
rounding towards the trench must be at least
100 mm wide.
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