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5.1 - INSPECTION AND PREPARATION
5.2 - CHECKING GROUND PERMEABILITY
Premise
The bollards and the corresponding foundation boxes may be delivered pre-assembled.
The bollards, control unit and required accessories are packaged on pallet.
Use appropriate lifting equipment or a forklift for transport .
Checking the subsurface
Before inserting the foundation box, make sure that the location where the bollard is to be fitted meetshe following
requirement:
1.
Water-bearing layers must not be present in the subsurface.
2.
Lines or electrical cables must be not present.
3.
A ground connection system corresponding with the directives must be available.
If the bollard is positioned on a gradient, the slope can cause rainwater to penetrate the foundation box. You must
provide a drainage channel with a cover grille in front of the bollard and in its immediate vicinity to prevent rainwater
from penetrating the system.
An important factor when inserting the bollard is prior assessment of the ground permeability to drain rainwater.
Make sure that the ground permeability in the fitting area meets the following requirements in advance:
• Perform a test to check the ground permeability before inserting the foundation box.
• Pour approx. 40 litres of water per m2 into the pit.
• Check whether the water seeps into the ground within approx. 30 minutes.
If the test is negative:
• Drain off the rainwater via a Ø 50 mm drainage pipe.
• Connect the drainage pipe to the sewer system.
Alternatively, the drainage pipe can be connected to a rainwater collection tank under the foundation box equipped
with an immersion pump and a float for automatic drainage. Or connect the drainage pipe to the sewer system.
DPT280
UK