Planning information
Note for installation
- Obey EN 1610 for installation and earthworks.
- Obey the maximum ground water level for buoyancy safety of the pump chamber.
- Design the bedding layer to support the full load of the shaft, including the pipework, pumps, and fluid.
- Use these for the bedding layer:
- Gravel layer
- Concrete layer
- Reinforced concrete plate as the baseplate
- To install the pump chamber, follow these points:
- Install only outside of buildings.
- Do not install next to living and sleeping areas
- Do not install in peaty soils
Dimensioning
Switch cabinet
- To control the pump system in view, e.g. manual pumping, control of the switching points, put the switch cabinet with controller next to the pit.
- Use a cable pipe with a minimum dimension of DN/OD 110.
- Supply a pull wire in the on-site cable pipe.
- The max. distance from the switch cabinet to pit includes:
- 1 m pump cable for connection to the switch cabinet
- The cable length sufficient to lift the pumps out of the pit
- Attach the sensors to the cross beam from above. Measure the cable length for the individual sensors in advance.
Backfilling
- Backfill the pump chamber evenly all around:
- With cohesive soil at 1 m
- With non-cohesive soil at 0.5 m
- With max. layer thickness at 300 mm
- With gravel, sand or gravel-sand mixture, grain size: max 16 mm
- With a compaction of Dpr. 95%-97%
- Obey guidelines and regulations.
- Be cautious of deformation of the pump chamber.
- Concrete filling is not permitted.
- Keep in mind the maximum height adjustment.
- Using concrete rings: 200 mm
- Using plastic pump chamber extension: 500 mm
Load distribution plate
- Install a load distribution plate for pump chamber cover D 400:
- It must be fully supported by the substructure, not by the pump chamber.
- Dimensions: External Ø: 1700 mm, internal Ø: 700 mm, thickness: 300 mm
- Concrete quality: C 35/45, reinforcement: Reinforcing steel B500A
- Distance: 150 mm horizontally and vertically, top and bottom