Bottom of the drainage inspection chambers

AS-LOMI

A plastic bottom as double-sided sacrificial formwork, incl. reinforcement.

Monolith without formwork.

A pre-cast part with the advantages of a monolith.

Revolutionary construction technology

Easy installation of a lightweight plastic pre-cast part, which is prepared as double-sided sacrificial formwork, incl. reinforcement for subsequent concreting right on the spot in the excavation.

What is innovative is the combination of the advantages of existing systems and the elimination of known disadvantages:

Conventional bottoms concreted on the spot = disadvantages:
Laboriousness of conventional formwork
Concrete permeability
Proneness of the joint between the bottom and the first shaft centering to leak
Corrosion of concrete in aggressive water
Necessity of additional insulation of the bottom

Concrete pre-cast part = disadvantages:
Heavy weight
Corrosion of concrete in aggressive water
Necessity of additional insulation for the bottom

Cast all-plastic shaft = disadvantages:
Limitation of the installation depth (max. static carrying capacity of the plastic)
Limitation of types and shapes
Price of the plastic bottom

Advantages of the AS - LOMI system:

- Low weight of the shaft (transport, installation)
- Concreting on the spot, without formwork and reinforcement
- Precise position of the reinforcement fixed to the concrete shell
- Precise design of the cunette in the bottom, made of chemically resistant material
- 100% protection from concrete corrosion caused by demineralised water
- Shaft bottom is 100% waterproof against the percolation of ballast groundwater
- Accurately balanced bottoms for the particular project, in accordance with the design documentation
- Static design, in accordance with the needs of the place of installation
- Variable height of the shaft bottom, according to the groundwater table, the needs of structural sizing, etc.
- Individual adaptation to the requirements with respect to the direction and diameters of connected pipes
- Possibility of individual adaptation to various shaft diameters