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Environmental Noise Levels
The max exposure time at 85 dBA is 8 hours, at 110 dBA it's just 1 min 29 seconds. If exposed, limit the time and wear hearing protection...more

Reverberation Time
The reverberation time of a room is defined as the time it takes for sound to decay by 60 dB after an abrupt termination...more
Part L1A
Conservation of fuel and power IN NEW DWELLINGS

Welwyn Garden City - Water Usage Calculations - 020 3390 0301
The office that covers this area is: London
Phone Number: 020 3390 0301 Email: welwyn-garden-city@e2consultants.co.uk
Our other services include:
Water Usage Calculations can also be known as:
Part G Water Calc, Water Calculations, Part G, Part G Water Calculation, Water Usage Calculation,


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