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General technical approval /
General design certification
No. Z-40.21-589
3.2
Design
3.2.1
General provisions
(1) Containers damaged during transportation or installation must not be used where
the damage in question reduces the leakproofness or stability of the containers. It is not
permissible to perform repairs on containers (inner container/collection container).
(2) Damage is to be assessed and measures to rectify damage are to be taken in consultation
with an expert in the field of plastics
(3) In earthquake areas within earthquake zones 1 to 3, as described in DIN 4149
tainers must be adequately secured in position to ensure that they are not subjected to any
concentrated loads in the event of an earthquake.
3.2.2
Equipping of the containers
(1) The containers must be equipped in accordance with the provisions of water law, occu-
pational health and safety regulations and building codes.
(2) Any devices with which they are equipped must be designed in such a way that unac-
ceptable excess or negative pressure and unacceptable stresses on the wall of the container
are excluded.
(3) A leak probe that is suitable for the intended use of the container is to be installed be-
tween the inner container and the collection container (outer container) in accordance with
the requirements set out under water law and in compliance with the general requirements
set out in the State building codes.
3.2.3
Assembly
3.2.3.1
General provisions
(1) The container bases must rest fully on a horizontal, even and rigid supporting surface
(e.g. concrete, tarmac). Where the containers are to be installed outdoors, the surface
should also be of road-quality construction and be watertight.
(2) Containers must be positioned at a sufficient distance from walls, other structural ele-
ments and one another to enable them to be checked visually for fill level, leaks and condi-
tion at any time.
(3) The identification plate must be positioned on a side of the container that is accessible.
The fill level indicator provided must be easy to read.
(4) The containers are to be positioned vertically in such a way that sufficient possibilities for
fire-fighting are provided.
3.2.3.2
Pipelines
(1) Ventilation and air extraction pipes must be sufficiently dimensioned and it must not be
possible to shut them off. The pipes and their fittings must be designed to remain leakproof
under excess pressure of 0.3 bar. Outlets must be protected against rainwater ingress.
(2) It is only permissible for multiple containers to be connected to the same ventilation and
air extraction pipes if the liquids to be stored or their fumes will not form dangerous com-
pounds.
(3) When connecting the pipelines to the container nozzles, care must be taken to ensure
that no forces and no additional external loads are exerted on the containers that were not
foreseen during the planning phase.
6
Experts from certification and inspection bodies and other experts determined by the Deutsches Institut
für Bautechnik upon request
7
DIN 4149:2005-04
Z93472.21
, with the assistance of the applicant where necessary.
6
Buildings in German earthquake areas – Design loads, analysis and structural
design of conventional buildings
Page 7 of 9 | 19 November 2021
GB
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, the con-
1.40.21-59/20
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