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(11) | EP 0 161 699 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Tank of prefabricated elements of reinforced concrete for storing liquids and purifying domestic and industrial waste water |
| (57) A tank (7) adapted for storing liquids in general and made of reinforced concrete
is obtained by coupling inner and outer staves (1) and (3) in the form of rectangular
laminae curved transversely with different radii of curvature and provided with appropriate
inner and outer circumferential grooves (15) and (17) arranged on the inner surfaces
of two substantially cylindrical heads (11), said plurality of staves (1) and (3)
constituting with said two heads (11) an empty case double wall (5) or planking adapted
for compacting thereinto the appropriately reinforced concrete (9). The heads (11)
are provided with a plurality of through holes (13) adapted for insertion of the metal
reinforcing and anchoring elements. Appropriate stabilizing wedges (21) and spacer
elements (23) ensure the stability of the tank (7) and the correct dimensioning between
the heads (11) as well as the containment of the anchoring concrete (9) and serve
as a pavement. Appropriate hatches (25) are provided on the upper portion of the tank
(7) which has the form of a horizontal cylindroid solid. |