Kanalbau-Wissen to go!

Approved load-securing devices (e.g. chains, pipe tongs) must be used to lower the pipe into the trench.

Check the pipe installation height and axis with laser, target plate and surveyor’s rod.

Make any necessary corrections to the pipe installation height and axis. If necessary, re-profile and newly compact the lower bedding layer.

Always use suitable equipment and an even load distribution when connecting pipes!

• Apply proper lubricant to the pipe connection.
• If necessary, install spacers on the pipe bell ends.
• Mark the pipe to indicate the optimal joint space.
• Follow the manufacturer’s installation instructions.

Connecting pipes of small nominal sizes (diameter < 250 mm) using wood and crowbar.

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Please note:

For most pipe materials, it is not permissible to use an excavator shovel to push the pipe sections together!

(This can damage the pipe joint and seal.)

Use suitable equipment to join pipe sections:

as specified by the construction manager/foreperson and according to the pipe manufacturer’s installation instructions.

Target

The pipe should lie in the middle of the trench, with X/2 (half of trench width) on both sides of the centre line.
If not, inform the foreperson.

Note:

• There may not be enough room to work on either side.
• If this is the case, compaction of the haunch zone and the side fill is difficult.
• Poor compaction leads to uneven loads on the pipe. This can cause damage to the pipe ➔ shifting soil, subsidence, cracking, deformation).

• 1 Pipe
• 2 Pipe axis in centre of trench
• X Total minimum trench width
• X/2 Half minimum trench width

Note:

Do not use an excavator to correct the position of the pipes! Using a wooden beam to distribute the load can also cause damage to the pipe ➔ cracking/deformation)!

Please follow the pipe manufacturer’s installation instructions.