Load Classes; Installation For Pedestrian Loading; Green Spaces Above The Ecobloc Inspect System; Installation For Vehicle Loading - Graf ECO BLOC INSPECT FLEX Notice D'installation

6.

load classes

6.1

Installation for pedestrian loading

When installing for pedestrian loading, vehicles of any kind must be prevented from driving over the
surface through structural measures or cordoning off. The permissable installation depths and max. earth
coverings are stated in Table 1 – Earth coverings.
6.2

Green spaces above the EcoBloc Inspect system

If a grass is planted above an infiltration system, the system should be covered with a geotextile or a
layer of clay roughly 100 mm (3.93") thick, otherwise the grassed area may dry out more quickly than
other areas.
6.3

Installation for vehicle loading

The minimum and maximum earth coverings depend on the various loading classes: car, lorry 12
(trucks), HGV (heavy goods vehicle) 30, HGV40 (HS-20) and HGV60 (HS-25).
The minimum and maximum earth coverings for the various loading classes are shown in Table 1.
Deviating installation situations should always be discussed with GRAF.
System covering (reuse excavated material and/or gravel) with a maximum weight of unit volume of
20kN/m³ (124.86 lbs/ft³).
pedestrian
Class
loading
0.25 m
min. Earth
covering
(9.84")
2.75 m
max. Earth
(9')
covering
* Angle of friction φ ≥ 25° is required
* *Angle of friction φ ≥ 30° is required
The installation depth depends on the loading classes and the angle of friction of the material used to
cover the EcoBloc Inspect systems.
Table 5 - Maximum installation depths (bottom edge of block)
pedestrian
Class
loading
max.
Installation 3,00 m
(9'-10")
depth
φ = 20°
max.
Installation 4,25 m
(13'-10.8")
depth
φ = 30°
max.
Installation 5,00 m
depth (16'-4.8")
φ = 40°
For more information about installing EcoBloc Inspect system under traffic areas up to HGV60 (HS-25)
please refer to chapters 9 and 10.
6. load classes
Table 4 - Earth coverings
lorry12
car
(H-10, H-15)
0.25 m 0.50 m
(9.84") (19.68")
2.75 m 2.75 m
(9') (9')
lorry12
car
(H-10, H-15)
3,00 m 3,00 m
(9'-10") (9'-10")
4,25 m 4,25 m
(13'-10.8") (13'-10.8")
5,00 m 5,00 m
(16'-4.8") (16'-4.8")
24 / 64
HGV40
HGV30
(HS-20)
0.50 m* 0.50 m*
(19.68") (19.68")
2.50 m 2.25 m
(8'–2.4") (7'–4.5")
HGV40
HGV30
(HS-20)
2,75 m 2,50 m
(9') (8'-2.4")
3,75 m 3,75 m
(12'-3.6") (12'-3.6")
5,00 m 5,00 m
(16'-4.8") (16'-4.8")
HGV60
(HS-25)
0.80 m**
(2'-7.44")
2.00 m
(6'-6.7")
HGV60
(HS-25)
2,25 m
(7'-4.5")
3.25m
(10'-8.4")
5,00 m
(16'-4.8")