MEASURING LAW SQUARE The expert proposes statements to you on site such as defined in the law of December 18 (96-1107) OJ of December 19, 1996 and decree of application n° 97-532 of May 23, 1997.
The law Carrez makes compulsory the mention of surface of a batch privative of joint ownership at the time of any change.
The statements carried out by a technician of construction qualified, especially formed to this mission guarantee the exactitude of information, exonerates you from any legal risk and supports the transparency of the transaction.
By these lawful interventions, the expert engages: To inform the occupants of the place of his step
To analyze the composition of the batches according to the entrusted documents To proceed to the statements on site To give the original certificate
Information on RADON Radon is an odourless and colourless gas radioactive resulting from the disintegration of radium, itself resulting from uranium.
The penetration of radon in a building results from many parameters: Concentration in the ground
Permeability and moisture of the ground
Presence of cracks or fractures in the rock under unclaimed and in particular of the characteristics specific to the habitat: Process of construction
Cracking of surface in contact with the ground System of ventilation Radon was classified in 1987 like “pulmonary carcinogen at the man” by the International Research Center on Cancer (CIRC).
The measurement of Radon In order to know the radon concentrations within a building, it is advisable to contact the expert who by means of several dosemeters, will be able to evaluate the particles emitted by radon.
The measurement of the Radon concentration
It is currently difficult to predict the radon concentration in a dwelling or a building.
Only a measurement makes it possible to detect if the occupants are exposed at the risk for their health.
To know the radon concentration in its dwelling makes it possible to implement possible measurements of correction necessary.
It is thus strongly advised with the private individuals to carry out a measurement of the radon concentration in their dwelling.
The proportioning of Radon
The dosemeters are placed by the specialist at precise places in the building by holding account in the interior conditions.
They do not present any danger.
They must remain in place a certain time without being moved. The conditions of measurement will be to control regularly.
The results are given in Becquerel per cubic meter Bq/m3.
The interpretation of the results On opinion of the higher Council of public health of France and in the current state of knowledge, the authorities fixed the threshold of alarm at 1000 Bq/m3 and the threshold of precaution to 400 Bq/m3, value inciting for the existing buildings.
The value guides of 200 Bq/m3 was retained for the buildings to be built.
In the event of results higher than 400 Bq/m3, it is desirable to make carry out a diagnosis of the building in order to know the ways of entry of radon and to implement the techniques of reduction possibly necessary
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