- The regulation of rainwater collected from waterproofed surfaces.
When constructing a building, local regulations increasingly require stormwater to be stored temporarily.
This retention system makes it possible to regulate heavy precipitation by delaying its evacuation to the storm water network, or the infiltration zone, in order to avoid saturation.
- The use of rainwater from inaccessible roofs, for non-potable uses, in accordance with the regulations in force, in particular the decree of August 2008, which defines the necessary technical recommendations.
The storage is placed inside or outside a building,
The size, configuration and constraints related to the construction of the land make it possible to define the shapes and types of materials of the tanks in order to meet the technical and financial requirements.
CONCRETE
IN STEEL
HDPE
From 2 to 20 m3, the concrete tanks offered are circular or oval in shape, to avoid the appearance of biofilm which develops particularly in the corners.
The advantage of concrete is above all the solidity of the material which allows a simple operating procedure.
In addition, the calcium carbonate contained makes it possible to neutralize rainwater which by nature has a rather acidic pH.
Concrete tanks are designed to directly receive the overhanging filter.
This system makes it possible to manage the overflow of the tank directly through the filter.
Concrete tanks can be twinned in order to obtain larger storage volumes (up to 60 m3 for example with three tanks of 20 m3)
There are several categories of cisterns depending on burial constraints, and passage directly above the cistern.
The technique most used in new construction resides in the realization of a masonry storage tarpaulin carried out by the shell lot, very often combined with a retention tarpaulin.
In this case, our intervention lies in the definition of the storage equipment for the crossings of walls and maintenance access to be provided.
