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Installation Guidelines BG standard channels

General Guidelines

Our installation suggestions and examples are commonly accepted proposals. Any out of the ordinary styles of construction due to local circumstances, must be authorised by the planning body. The basic technical rules and guidelines generally accepted among experts should be taken into consideration during installation.


  1. BG concrete drains are set up in a concrete-bedding according to Ö-Norm B4710-1 or in drainage-concrete according to RVS 08.18.01. Mind the slope of the channel while excavating. If the concrete foundation is al-ready cured you have to provide a mortar bed of at least 2cm. Depending on the static demand you will need a supporting wedge – see the table below for details and measurements. BG channels should generally be set up with proper tools (e.g. BG lifting grab).

  2. Take note of the different heights of channels with gradient and start setting at the outlet of the channel line. Each channel is marked with an arrow showing the direction of flow.

  3. The rebated joint between the channels can be sealed and cemented with appropriate sealing compounds – for description of material and quantity calculation see - BG sealing system.

  4. We advise by use in highly frequented areas according to the area of application, frequency and driving speed to fix the grates with patent- or fixing-clips.

  5. Before assembling the adjacent cover layer make sure that the covers are inserted and if necessary fixed or the channels are braced adequate against compression. Pay attention not to damage the channels while compact-ing the superstructure and the pavement (asphalt, pavement, concrete).

  6. If there are occuring horizontally forces (e.g. due to concrete areas, gradients,…) you have to build out an adequate running joint at an interval of 30 – 200 cm from the channel. In a concrete area where there are running joints crossing the channel line they have to be arranged to go through a rebated joint of the line.

  7. All adjacent surfaces should be permanently 3-5mm higher than the surface of the channel/grate to avoid me-chanical damage (e.g. snow clearing) and to guarantee the water drainage.

  8. The installation instructions also apply to sump units.


Load classA 15 kNB 125 kNC 250 kN
Concrete quality - base
according to Ö-Norm B 4710-1 *
C 16/20C 20/25C 20/25
Foundation width: X≥ 8 cm≥ 10 cm≥ 15 cm
Foundation level: Ymin. channel hight - 8 cm
Foundation strength: Z≥ 8 cm≥ 10 cm≥ 15 cm
* Required minimum quality strength concrete, which has to be adapted to the local requirements.

Laying Examples