Noise level
Noise can be defined as undesired sound, or sound which causes disturbance or annoyance to the recipient. One scientific measure of noise levels is the decibel (dB), which is calculated according to a logarithmic intensity scale.
Noise levels between 120 dB and 150 dB (e.g., airplanes taking off and landing, drilling and sawing of roadways) are dangerous to human hearing. 'Pleasant' noise levels are between 30 dB and 50 dB, though these levels are sometimes unachievable in today's society.
The Government has defined three noise levels:
- No observed effect level – the level of noise exposure where there is no effect on health or the quality of life.
- Lowest observed effect level – adverse effects on health and the quality of life can be detected.
- Significant observed adverse effect level – the level of noise exposure where there can be significant effects on health and quality of life.
In Great Britain, over one million employees are exposed to noise levels at their workplace which pose a risk to their hearing.
In April 2006, the Control of Noise at Work Regulations 2005 came into force, replacing the Noise at Work Regulations 1989. The regulations were established under the Health and Safety at Work etc. Act 1974 and implemented the European Council directive 2003/10/EC. The regulations require that employers protect their employees from noise levels that could cause hearing damage.
[edit] Related articles on Designing Buildings
Featured articles and news
Top 50 firms awarded 52bn of projects in the last year
New engineering data shows.
Enhancing construction site reporting efficiency
Through digitisation and the digital revolution.
Noise in the built environment
BSRIA guide TG 20/2021.
17,000 people suffer conditions as a result of exposure to excessive noise at work.
Turning down the noise: Auditory health
A pervasive risk with far-reaching consequences.
UK Construction Week, London is here !
Debuting major international pavilions and much more.
Getting the most out of heat pumps and heating
How heat pumps work and how they work best.
Plumbing and heating for successful retrofit and renovation
Low temperature underfloor systems and heat pumps.
Cost-of-living crisis and home improvement plans
Starting on the right footing and top tips for projects.
Delays on construction projects
Types, mitigation and the acceleration of works.
From Chaucer to Fawlty Towers.
Electrotechnical excellence, now open for entries.
Net zero electricity grids BSRIA guide NZG 5/2024
Outlining the changes needed to transition to net zero.
CIOB Global Student Challenge 2024
Universitas Indonesia wins for second year running.
ECA 2024 Apprentice of the Year Award
Entries open for submission until May 31.