In construction, it is important to drain soils properly to prevent them from causing damage to the infrastructure.
Groundwater infiltration is responsible for 80 per cent of cracks in buildings, works of art and artefacts.
When it comes to stormwater, it is the roads that suffer the most deterioration. In fact, if the water is not properly collected and drained into the ground below, it will cause damage to the stability of the road as it is absorbed by the road’s supporting structure. Any work on the surface will therefore be useless because stormwater will continue to cause cracking until the subsoil is dry.
Every soil has its own natural drainage system; however, the ratio between rainwater inflow and its dispersion depends on its characteristics. Those soils where there is no underground water table or there is an excess of water require an artificial drainage system.
What is an artificial drainage system and how does it work?
According to the dictionary, it’s the “process by which water from a layer of soil or incoherent matter that is soaked in it are drained by means of special items (channels with permeable or perforated walls, trenches, tunnels)”.
Draining a soil therefore means creating a network of small underground conduits (drain pipes) that collect and promote the removal of stormwater without having to shape the above surface.
On the other hand, the function of stormwater dispersion in the soil is different. In this case, the purpose is not to collect and remove groundwater, but rather to disperse stormwater that is generated by the presence of impermeable surfaces.