5.
Installation
5.1
Preparing the trench
The sizes of the trench depend on the dimensions
of the infiltration ditch, leaving a working space all
the way round (see section 3.3).
The trench bed must always be prepared as a
level, flat pit with load-bearing capacity. Sharp
objects, 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 mm) is then
placed on top of the bed. This is then drawn out flat
and serves as a base for the next stages.
5.2
Covering with geotextile
Geotextile forms the protective layer for the infiltra-
tion ditch elements and prevents dirt from entering
the ditch. Damage to the geotextile should be
avoided.
The geotextile is placed lengthwise on the blinding
layer. Ensure sufficient overlap (300 mm) at the
joints.
Since the entire infiltration system will be wrapped
with the geotextile later on, sufficient coverage
should be ensured at this stage.
5.3
Positioning the infiltration ditch elements
The infiltration ditch elements are placed on the
geotextile sheets (lying, never upright) and con-
nected to each other with EcoBloc connectors
(shown in yellow in Figure 11). Two EcoBloc con-
nectors (shown in yellow in Figure 11) are required
for the transverse and longitudinal connection.
5. Installation
Figure 7: Preparation of the levelled ground
Figure 9: Positioning the infiltration ditch elements
2 /
Figure 6: Digging the trench
Figure 8: Laying geotextile