1.
General information
1.1
General
Infiltration systems are usually subject to official approval processes. This should be investigated in the
planning phase. The statutory specifications and the requirements in the relevant literature, such as Ger-
man and European standards and work sheets / data sheets of the DWA, always apply.
Only authorised and qualified personnel should install and inspect the infiltration system. The following
safety and installation instructions should also be noted.
The infiltration system is usually sized in accordance with work sheet DWA A-138. You can request free
sizing on request. In particular the permeability of the surrounding soil is of great significance to the func-
tion of the system. Misjudgements may result in problems with and damage to the infiltration ditches.
1.2
Safety
All work should be undertaken in compliance with the relevant accident prevention regulations according
to BGV C22.
Furthermore, relevant specifications and standards, such as DIN 18300 "Earthworks" and DIN 4124 "Ex-
cavation pits and trenches", must be observed during installation, assembly and repairs.
The entire system must always be switched off and secured against unauthorised restarting during any
work on the system or system components.
1.3
Transport and storage
GRAF infiltration ditch elements Rain Bloc compact 300 are stored and transported in packaging units of
12 modules or 14 modules. The basic dimensions of the packaging units are always
1.2 m x 0.6 m.
They can be transported to the installation location with a fork lift truck or similar equipment. At the instal-
lation location, the infiltration ditch elements can be moved manually or with light-duty equipment.
A suitable surface (level and solid) should be used for intermediate storage. Please ensure correct stor-
age. This means away from negative influences such as fuel, lubricants, chemicals and acids. Storage
outdoors should not be for any longer than one year. What is more, the impact sensitivity of the elements
increases as the temperature falls. Especially in the event of frost, impact may therefore cause damage to
the elements.
1. General information
There is an increased risk of slipping on the system in frosty and wet condi-
tions.
GRAF provides an extensive range of accessories, which are all coordinat-
ed and can be combined to form complete systems. Using accessory parts
not approved by GRAF will render the warranty/guarantee null and void.
Before installation, the infiltration ditch elements should be checked for
damage. Damaged or defective parts must not be installed. If in any doubt,
contact GRAF.
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