Initial situation
In the municipality of Buchdorf, a new residential area is to be developed. Since we already proved our professional skills during the development of an industrial area in Buchdorf, we are awarded the contract. We are expected to come up with unconventional solutions that take into account the requirements of urban planning.

The earth doesn't get wet
Due to the planned development of the site that is situated at a southern slope, some 70% of the soil is going to be sealed. In the same way, 70% of the rainwater would have to be deflected. This would lead to a considerable increase in the danger of flooding and the deflection would also impair the groundwater recharge. As a result, the area would slowly be turning into wasteland. Although this problem could be solved by an artificial supply of rainwater, we consider this too much trouble.

The earth is getting wet after all
It makes much more sense to us to drain the rainwater on site. But for this purpose, the subsoil has to be suitable. Our soil report gets things straight - the soil joins in. We intend to insert green belts in the residential area that is to be developed. The water draining away from roads, roofs and yards runs over narrow, grass-covered green belts into a trough drain system. The ring-shaped ditches collect the excess water and lead it over a slight gradient into a drip sink. In this trough there is a stone drain, i.e. a kind of gravel box. Normally the green belts and the trough drain the rainwater. Only in case of extremely heavy rains the water runs on into an additional reservoir and is infiltrated there in the same way over a gravel bed. With this innovative solution we ward off the danger of flooding and preserve the groundwater level.