Depth of drainage
The criteria for the height of the ditch level and the drainage are primarily intended to prevent high groundwater levels. However, this will occasionally be the case. You determine the probability of how often this occurs. This is determined, for example, by placing the drains closer together or at a greater distance from each other. Various choices are also possible for the length and diameter. Soil type and soil structure also play an important role in this. When choosing the diameter of the drainpipe, especially the surface that drains into a drainage pipe is important. In addition, it is important which slope is accepted from the groundwater towards the end pipe, the so-called hydraulic slope.