English (GB)
6
4. Installing the product
4.1 Preparing the foundation
With reference to DS/EN 1997-1: Eurocode 7: Geotechnical
Category 2:
We recommend that you complete a geotechnical investigation of
the site conditions before you install the pit.
With reference to DS/EN 1997-1: Eurocode 7: Geotechnical
Category 1:
The geotechnical investigation can be judged to be unnecessary,
if the conditions below are fulfilled:
• There is a negligible risk of overall instability, ground
movements or adverse ground conditions.
• Comparable local experience shows that the ground
conditions are sufficiently uncomplicated.
• There is no excavation below the water table.
• Comparable local experience indicates that the proposed
excavation below the water table will be uncomplicated.
In case of doubt, consult a geotechnical specialist.
Fig. 3
Schematic installation drawing
4.1.1 Foundation layer
• The pit must be placed on a foundation layer if soil analyses
and information about the pit load indicate that the bottom is
not capable of bearing the weight.
• The foundation layer can be made after the excavation by
laying a stable layer of suitable gravel or similar material and
compacting it in layers of maximum 50 cm. Such a foundation
layer is also required if the excavation has become too deep
by mistake.
4.1.2 Foundation slab
The concrete for the foundation slab must meet these
requirements:
Fig. 4
Lowering the foundation slab
CAUTION
Collapsing hazard
Minor or moderate personal injury
- Support for the crane must be placed at a suitable
distance from the pit to avoid collapse of pit hole.
Work according to local regulations.
Installation of pits must be carried out by an
authorised person in accordance with local
regulations.
Work in or near wastewater pits must be carried out
according to local regulations.
T
M
06
1
8
4
8
32
14
Pos.
Description
1
Foundation layer
2
Foundation slab
3
Backfill, compacted in layers of maximum 50 cm
4
Distance of 50 cm from cover where heavy loads must
not occur
Select the location of the pit so that its installation
does not damage other equipment. And the other
equipment must not damage the buried pit.
4
4
3
2
1
Strength class
C40/50-2
Exposure class
XC4
Water-to-cement ratio
≤
0.45
Maximum chloride content
0.4 %
Reinforcement
B500B
Maximum angle of inclination
25 °
Maximum water absorption by mass
6 %
TM
06
12
37
25
14
Summary of Contents for PS.G Series
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