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2.4.6. Cover suitable for truck/heavy load traffic (D400 in accordance with EN124)
In case of heavy truck traffic, an appropriate cover according to EN 124 class D must be
used. In addition a load distribution plate must be provided on site (structural drawing
available at GRAF GmbH).
Saphir tank series
max. 9,5 to
700 - 1200
3. Assembly and Installation
3.1.
Building pit
In order to leave adequate work space, the ground surface of the building pit must exceed
the tank dimensions by > 500 mm on each side. The clearance to fixed structures must be at
least 1000 mm.
A slope with the angle ß must be applied according to the following table.
Non-cohesive or soft, cohesive soil
Tank must be suitable for car traffic (cover B125, D400)
Stiff or semi-firm, cohesive soil (tank accessible only)
Rock (tank accessible only)
Attention: In order to be suitable for car traffic, a slope angle of a maximum of 50° must be
adhered to. The building site must be horizontal and even and must provide adequate load-
bearing capacity.
The depth of the pit must be dimensioned, so that a maximum ground level cover (a
maximum of 1200 mm over the tank col- lar) is not exceeded.
A layer of compact grounded gravel (maximum grain size 8/16 mm, thickness at least 150
mm) must be laid down as a sub- structure.
3. Assembly and Installation
max. 60 to
Soil typ
KLsepa.pop
Diamant tank series
max. 60 to
max. 9,5 to
Slope angle β in °
≤ 45°
≤ 50°
≤ 60°
≤ 80°
700-1200
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