Placing In The Excavation And Laying The Connections; Filling - Graf DN 400 Notice D'installation Et D'entretien

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6. Installation and assembly
6.2.2 Shortening of the VS-Shaft System DN 600
The desired installation depth can be reached by cutting the distributor module and the infiltration
connecting piece 1000 DN 600.
Infiltration distributor module DN 600 Infiltration connecting piece 1000 DN 600
330361 371015/ 371016
Effective length: 585/ 1000 mm Effective length: 500/ 750/ 1000 mm
6.3

Placing in the excavation and laying the connections

The shaft is installed in the prepared excavation and is then connected to the relevant pipes etc.
Attention, it is important to note that all the pipes to be installed have a must have a gradient of at least
1% in the flow direction without sagging or bending downward.
Important: DIN 1986 must be followed, therefore the diameter of the supply pipe = the diameter of the
run-off pipe.
6.4

Filling

The shaft system is to be placed in the prepared excavation pit in a horizontal position without shocks.
It is essential to check the correct position of the shaft system before and during filling. The shaft
encasement is manufactured layer by layer with rounded gravel (granulation 8/16 according to DIN 4226-
1) to a width of approx. 300 mm. The individual layers are laid in heights of 300 mm and compacted
afterwards with a light compacting machine (hand rammer). It is essential to avoid damage to the shaft
housing during compaction. So that no forces are transmitted to the shaft housing, the telescopic dome
shaft cover must be lined accordingly and vibrated in. In the case of areas subject to car or truck traffic,
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