“Eco-tank” is a system in which underground pre-cast (PC) water storage tanks comprehensively support flood control measures whilst protecting urban environments and people’s lives from flood damage.
The “Eco-tank” can be installed underneath various types of public spaces such as school playing fields, parks, baseball grounds, tennis courts, and parking lots (installation underneath commercial facilities is also possible). Because the “Eco-tank” system utilises pre-stressed long-span structures whilst possessing few total members, the construction works are completed in an exceptionally quick manner making it suitable for adoption underneath areas such as school playing fields, which are generally constructed within a short time frame.
Water storage tanks are established underneath the flood control basin, which is situated directly adjacent to the river. By effectively integrating the flood control basin with the water storage tanks, improvements can be realised in the handling of increased water storage volume and the efficient usage of the existing land.
Overflow water from the river is initially trapped within the underground water storage tanks; however, as the overflow water levels rise, the rainwater is effectively captured by the flood control basin.
The flood control basin area is typically employed for multi-purpose usage such as for parks and playing fields in which the city residents can enjoy at their leisure.
The underground water storage tanks within the “Eco-tank” system are designed to effectively handle the relative frequency of flood damage over many years.
This method will combat the rare occurrence of major scale flood damage by employing an open reservoir which can catch possible water overflow. By decreasing the size of the underground water storage tanks whilst simultaneously efficiently using the available space directly situated above, initial investment costs can be minimised. Kawada is able to provide a system, recognised for its cost performance, in which the underground water storage tank’s operation and maintenance costs are kept at a minimum level.