Graf EcoBloc Inspect smart Notice Pour L'installation, L'utilisation Et L'entretien page 28

7. Installation
The sizes of the trench depend on the dimensions of the infiltration system, leaving a working space of
around one metre all the way round, see chapter 5.4.
7.1 Preparing the trench
The trench bed must always be prepared as a
level, flat pit with load-bearing capacity. Sharp ob-
jects, larger stones or similar foreign objects
should be removed.
A blinding layer, with a thickness of approx.
80 mm, made from gravel (grain of 8/16) is then
placed on top of the bed. This is then drawn out
flat and serves as a base for the next stages.
7.2 Covering with geotextile
Geotextile forms the protective layer for the infil-
tration ditch elements and prevents dirt from en-
tering the ditch. Damage to the geotextile should
be avoided.
The geotextile is placed lengthwise on the blinding
layer. Ensure sufficient overlap (30 cm) at the
joints.
Adequate coverage should be ensured at this
stage, as the entire infiltration system will later be
covered with geotextile.
7.3 Adding base plates
The base plates are placed on the geotextile. Each
joint between the base plates is fixed with connect-
ing elements.
Please note:
The base plate determines the alignment of the
inspection channel! The alignment can be
identified by the arrow markings on the top of
the base plate.
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7. Installation
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