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Sound Insulation
Two parameters describe sound insulation; Dw and Rw. Dw is the insulation between rooms. Rw is the lab-tested insulation of a wall/floor...more

Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more
Part L2A
Conservation of fuel and power in new builds other than dwellings

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Sound Testing in Denbighshire, Domestic Thermography in Derbyshire, BREEAM HEA04 Thermal Comfort in Devon, Domestic Sound Testing Part E in Dorset, Asbestos Management Survey in Dumfries and Galloway, Commercial Noise Survey For Residential Development in Dunbartonshire, TER DER Calc in Durham, Code Air Infiltration Survey in Dyfed,