Technical Booklet G Resistance to the Passage of Sound·Page 32·2.34
Wall type 1.2 - Dense aggregate concrete cast in-situ with plaster
Dense aggregate concrete cast in-situ with plaster on both room faces must achieve a minimum mass per unit area of 415 kg/m² including plaster. An example using 190 mm concrete with 13 mm lightweight plaster on both sides (concrete density 2200 kg/m³) would meet this requirement.
Dense aggregate concrete cast in-situ, plaster on both room faces (see Diagram 2.3) – minimum mass per unit area including plaster 415 kg/m²; plaster on both room faces. The required mass per unit area would be achieved by using: 190 mm concrete with 13 mm lightweight plaster on both room faces (minimum mass per unit area 10 kg/m²) and concrete density 2200 kg/m³.
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