Backfilling The Infiltration System - Graf SICKER-BLOC COMPACT 300 Anleitung

5.6

Backfilling the infiltration system

Before backfilling the trench, all inlets, vents and
shafts must be connected. Ensure that the geotex-
tile is not pulled apart. Overlaps must remain in
place when backfilling.
When the trench is being backfilled, the installation
conditions described in section 4.3 must be ob-
served and adhered to. Provided that the installa-
tion situation does not require special backfilling
materials, the packed drainage system is backfilled
with coarse-grained, compactible loose ground
(gravel, crushed stone, sand etc.) at least up to the
top edge of the drainage system. Above the top
edge of the drainage system, any excavated earth
or similar can then be used for backfilling the
trench if necessary. Sharp objects, larger stones or
similar foreign objects should be removed.
5. Installation
Please note:
The blocks must not be driven over directly with construction machinery.
6 /
Figure 18: Backfilling the infiltration system