Attenuation
Attenuation refers to a reduction in force, effect, or value. Attenuation may be achieved by an attenuator.
The SuDS Manual published by CIRIA in 2015 defines attenuation as: ‘Reduction of peak flow rate and increased duration of a flow event.’ It defines attenuation storage as: ‘Volume in which runoff is stored when the inflow to the storage is greater than the controlled outflow.’
Culvert, screen and outfall manual, (CIRIA C786) published by CIRIA in 2019, defines attenuation as the: ‘Reduction in the peak discharge of a flood as it passes down river due to storage or constrictions.’
The term ‘attenuation’ is also used in the construction industry to refer to the reduction of the transmission of sound, typically in ductwork, doors or other elements that pass from one area to another. It can also refer to wave attenuators, pressure attenuators in ventilation piping and so on.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Conserving the Hilda Besse Building
Improving facilities, accessibility and overall appearance.
BSRIA IAQ topic guide published
Free download of TG 12/2021 available.
Electrotechincal mentors wanted
TESP works with The Youth Group to form skill sharing network.
OpenBuilt supply chain technology in development
Big tech collaborates on platform for the built environment.
Concerns raised over Future Buildings Standard
Letter signed by 21 organisations sent to MHCLG.
The infrastructure planning process
A look at the Government's strategic approach.
Steps to help reduce the spread of infection inside buildings.
Urban exploration and construction
This social media-centred hobby can be both dangerous and illegal.
Millwork wall treatment with a long and illustrious history.
Weekly workplace noise estimator tool
HSE introduces cumulative exposure calculator.
The Edwardians and their houses.
Cut off from civilian life for over 900 years.
Can net zero and levelling-up align?
Gaining green support from the carbon giants.
Receive the Designing Buildings newsletter
Click the button to subscribe.