Installation Under - Graf ECO BLOC INSPECT 420 Mode D'emploi

9. Installation under traffic areas for driving up to SLW60
9. Installation under traffic areas for driving up to SLW60
Figure
1: Installation under traffic areas used for driving up to SLW60
Designation
1 Traffic area
Superstructure in
accordance with the
2
applicable directives, e.g.
RStO 12
3 Upper levelling layer
2+3
Geotextile/plastic sealing
4
lane
5 Lateral backfilling
6 Granular subbase
7 Construction pit bottom
Depth Properties
In accordance
with the
applicable
directives
Min. 400 mm
Min. 800 mm
Max. 2000 mm
To the upper
edge
of the blocks
80 – 100 mm
/
Notes:
The infiltration crates are installed and
connected in accordance with chapter
6 and 7. Ventilation pipes must be
installed in green areas.
The backfill materials for the different
soil layers must not exceed a
maximum density of 20 kN/m³ [124.86
lbs/ft³].
The soil layers must be installed
evenly all around and compacted in
layers of max. 300 mm with light or
medium compaction units. A
compaction degree Dpr of ≥ 97%
should be reached.
Use of compaction units with activated
vibration is not permitted.
Sudden backfilling with large amounts
of soil is not permitted.
The local situation must be observed for
frost-free installation depth
Gravel carrying layer
Free of foreign bodies
E ≥ 45 MN/m²
V2
Infiltration application: wrapped completely in
geotextile in order to prevent the ingression
of dirt through the surrounding soil
Retention application: 3-layered structure
(geotextile-sealing lane-geotextile) to protect
the sealing lane and waterproof the tank
Gravel 8/16 mm [0.31/0.63"]
Free of foreign bodies (such as roots,
shards, garbage or organic material)
Permeability of the lateral backfilling should
at least correspond to that of the adjacent
soil.
Gravel 8/16 mm [0.31/0.63"]
Plane layer, without pointed objects, larger
stones or similar foreign bodies
E ≥ 45 MN/m²
V2
Horizontal, level and loadbearing planum
made of infiltration-capable subsoil