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The Decibel Scale
Gives an approx of human perception of loudness. This is because the human ear has a logarithmic response to changes in sound level...more

Sound Levels
Decibels (dB) are most commonly used as a measure of sound level, but they are also used in electronics, signals and communications...more
Part L1B
Conservation of fuel and power in Existing Dwellings

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CSH can also be known as:
Code Assessment, Code for Sustainable Homes Daylight Calculation, Code for Sustainable Homes, C4SH, Sustainable Homes,
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