FIELD: construction, particularly means to protect building against radon and other ground gases, for instance multilayered building blocks used for radon-protective foundation base and wall panel production.
SUBSTANCE: vented building block comprises box member and porous filler arranged on box member bottom. The filler has air-discharge orifices. The box is monolithic and is formed of concrete material mainly based on rigid cement mixes. Box interior is filled with porous filler. Two one-way valve assemblies are built in main box face layer so that the valve assemblies permit air passage inside the box provided with porous filler. One one-way valve assembly opens valves in the case of increased ambient air pressure, another one opens valves in the case of decreased ambient air pressure. Radon-protective system is also disclosed.
EFFECT: provision of load-bearing capabilities and ground gas discharge from basement into atmosphere.
7 cl, 4 dwg
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