Depending on the type of pipe you intend installing, there are different guidelines that should be followed.
When laying new pipe or rerouting existing pipe lines, you should bear in mind the type of materials used to prevent destroying the pipe. Next to the pipes you should avoid materials with large stones as over time these can press holes or crush pipes.
You should also remember that pipes carrying water must be laid with a specific incline and at a certain depth to prevent the water from freezing.