Civil Engineering Reference
In-Depth Information
(a)
(b)
Fig. 2 Radon protection measures. a Sealing of the joint between foundation wall and floor slab,
when the foundation wall is made of permeable material. b Installation of a suction pipe in the
gravel layer (Arvela
2001
)
reducing radon concentrations, while the use of radon-barrier membranes installed
during construction does not consistently provide adequate radon protection,
specifically failing to reduce the internal radon to concentrations below the action
level of 200 Bq/m
3
. The use of soil depressurization systems (SDS) is very
effective in reducing radon concentrations although the passive SDS (Fig.
4
)is
much more cost-effective than mechanical SDS (Abdelouhab et al.
2010
).
