Construction Noise Control: A Practical Guide to BS 5228

Construction work is noisy by nature. Demolition, piling, excavation, vehicle movements and heavy plant can all affect people living or working near a site.

That does not mean disruption has to be left unmanaged.

Effective construction noise control starts with understanding the likely impact, planning the work carefully and putting proportionate measures in place. On some projects, this may involve a formal construction noise assessment, a noise and vibration management plan, ongoing monitoring or an application for prior consent.

Getting the acoustic input right early can reduce complaints, support planning and help the project continue without avoidable disruption.

What is construction noise control?

Construction noise control is the process of assessing, managing and monitoring noise created by demolition, construction and other site activities.

It may involve:

• Predicting the noise likely to be generated by planned works
• Measuring existing background sound levels
• Identifying nearby homes and other sensitive buildings
• Selecting quieter working methods and equipment
• Planning when the noisiest activities will take place
• Using barriers, enclosures or other physical controls
• Monitoring noise and vibration while work is underway
• Keeping local authorities and neighbouring communities informed

The right approach depends on the project, the work being carried out and the surrounding area.

A small daytime refurbishment in a commercial district will present different risks from night-time railway works or piling beside occupied homes.

Why construction noise needs to be considered early

Noise problems are easier to prevent than resolve once work has started.

If the likely impact is not considered during planning, a project may face:

• Objections or delays during the planning process
• Additional planning conditions
• Complaints from neighbours
• Restrictions on working methods or hours
• Unplanned changes to plant or site layout
• Extra monitoring requirements
• Lost time while mitigation is agreed and installed

Early assessment allows the design and construction teams to identify the main risks while there is still time to make sensible changes.

It can also help the team explain clearly how noise and vibration will be managed before work begins.

What is BS 5228?

BS 5228 is the main British Standard used to guide the assessment and control of noise and vibration from construction and open sites.

It is divided into two main parts:

BS 5228-1: Noise

This part guides predicting and measuring construction noise, assessing its likely effects and selecting appropriate control measures.

It includes methods that can be used to assess noise at nearby homes and other noise-sensitive locations.

The assessment method and suitable criteria will depend on factors such as:

• Existing sound levels
• The type and duration of the work
• The time of day
• The distance from the site
• The character of the surrounding area
• Local authority requirements
• Any relevant planning conditions

This is why the example values contained within the standard should not be treated as one fixed noise limit for every construction site.

BS 5228-2: Vibration

The second part covers vibration from construction and open-site activities.

Potential sources include:

• Piling
• Demolition
• Compaction
• Breaking out concrete
• Heavy vehicle movements
• Some types of excavation and groundworks

The potential effect on people is assessed differently from the risk of damage to buildings. A vibration level may be noticeable or disturbing without being high enough to damage a structure.

A suitable assessment needs to consider the source, the ground conditions, the distance to nearby buildings and the nature of those buildings.

Is BS 5228 a legal requirement?

BS 5228 is a code of practice rather than a piece of legislation.

However, it is widely used by acoustic consultants, planning authorities and environmental health teams when assessing whether suitable steps have been taken to control construction noise and vibration.

It may be referenced in:

• Planning conditions
• Environmental impact assessments
• Construction environmental management plans
• Noise and vibration management plans
• Section 61 applications
• Contract requirements
• Local authority codes of construction practice

Following BS 5228 does not automatically guarantee that a project will avoid complaints or meet every requirement. It does, however, provide an accepted framework for assessment and control.

Sections 60 and 61 of the Control of Pollution Act

The Control of Pollution Act 1974 gives local authorities powers to control noise from construction sites.

Section 60 notices

A local authority can serve a Section 60 notice setting requirements for how construction work must be carried out.

The notice may address matters such as:

• Permitted working hours
• Plant and machinery
• Working methods
• Noise levels
• Steps required to reduce noise

A notice may be issued when the authority considers that construction noise needs to be controlled.

Section 61 prior consent

A contractor or developer can apply to the local authority for prior consent under Section 61 before noisy work starts.

The application will usually explain:

• The proposed works
• Expected working hours
• Plant and equipment
• Predicted noise and vibration levels
• Proposed control measures
• Monitoring and communication arrangements

This provides an opportunity to agree how the work will be managed in advance.

A Section 61 application needs careful preparation. Consent is based on the proposed programme and methods, so changes during construction may need to be discussed with the authority.

Statutory noise nuisance

Construction noise may also be investigated as a potential statutory nuisance.

Whether noise amounts to a statutory nuisance does not normally depend on one universal decibel limit. The authority may consider factors including:

• How loud the noise is
• How long it lasts
• How often it occurs
• The time of day
• The character of the area
• How it affects the use of nearby premises
• The steps being taken to control it

Good records, clear communication and evidence of the measures being used can be important if a complaint is made.

When might a construction noise assessment be needed?

A formal assessment may be requested or advisable when:

• A planning condition requires one
• Demolition or major construction is planned near homes
• Piling, breaking or other high-noise activities are proposed
• Work will take place during evenings, nights or weekends
• A school, hospital, hotel or other sensitive building is nearby
• The project is expected to run for a long period
• An environmental impact assessment is being prepared
• A Section 61 application is required
• Noise complaints have already been raised
• The local authority requests predictions or monitoring

The scope should reflect the actual project. Not every site needs the same survey duration, modelling or monitoring arrangement.

What happens during a construction noise assessment?

A typical assessment may include the following stages.

1. Review the proposed work

The acoustic consultant reviews the programme, working hours, equipment, site layout and likely construction methods.

This helps identify the activities most likely to create noise or vibration.

2. Identify sensitive locations

Nearby homes are often the main concern, but other sensitive uses may include:

• Schools and nurseries
• Hospitals and care facilities
• Hotels
• Offices
• Places of worship
• Laboratories or buildings containing sensitive equipment

3. Measure existing sound levels

A noise survey may be needed to understand the existing acoustic environment.

This provides context for the assessment and can help determine the most appropriate method and criteria.

4. Predict construction noise and vibration

The expected plant and activities are modelled or calculated using suitable data and assessment methods.

Predictions may account for:

• Plant sound levels
• Operating time
• Distance
• Ground effects
• Screening
• Reflections
• The number of machines working at once

5. Recommend control measures

Where a significant effect is predicted, the consultant can work with the construction team to identify practical ways to reduce it.

6. Plan monitoring and reporting

For some projects, attended or unattended construction noise monitoring may be required.

Trigger levels and reporting arrangements should be agreed before monitoring begins, along with a clear process for responding if they are exceeded.

Practical construction noise control measures

The most effective solution is usually to reduce noise at source before relying on barriers or monitoring.

Suitable measures may include:

• Selecting quieter plant and working methods
• Keeping equipment properly maintained
• Switching off machinery when it is not needed
• Avoiding unnecessary idling
• Positioning noisy plant away from neighbouring properties
• Using existing buildings or site structures as screening
• Installing suitable acoustic barriers or enclosures
• Keeping enclosure panels and doors closed
• Lining material chutes to reduce impact noise
• Sequencing activities to avoid several noisy operations at once
• Limiting the duration of particularly disruptive work
• Using broadband reversing alarms where suitable and safe
• Scheduling high-noise work for less sensitive periods
• Briefing site teams on the agreed controls
• Giving neighbours advance notice of unusually noisy activities

A barrier will only work well if it is properly positioned and interrupts the direct path between the source and the receiver. Gaps, insufficient height or poor placement can greatly reduce its benefit.

Controls also need to be realistic. A measure that cannot be maintained safely or consistently on a working site will have limited value.

Construction noise monitoring

Monitoring provides evidence of the noise or vibration generated while work is taking place.

It can help teams:

• Check performance against agreed criteria
• Identify unexpected noisy activities
• Investigate complaints
• Review whether mitigation is working
• Provide reports to the client or local authority
• Respond quickly when trigger levels are reached

Monitoring can be attended, with a consultant present, or unattended using equipment installed for a longer period.

Automated alerts may also be useful, but they need a suitable response process behind them. An alert has little value if no one knows who should investigate it or what action should follow.

Monitoring should support good noise management rather than replace it.

Construction noise and worker safety

Noise affecting the surrounding community and noise exposure for site workers are related, but they are not the same assessment.

BS 5228 is commonly used to consider environmental effects outside the site. Employers also have separate responsibilities to assess and control employees’ exposure to noise at work.

This may require:

• Assessing personal noise exposure
• Reducing exposure through quieter methods or equipment
• Limiting the time spent in high-noise areas
• Providing suitable hearing protection
• Identifying hearing protection zones
• Giving workers information and training
• Providing health surveillance where required

A boundary noise monitor does not, by itself, demonstrate that workers’ hearing is adequately protected.

Why involve an acoustic consultant early?

An acoustic consultant can help the project team understand what is likely to be required before commitments are made on plant, working methods and programme.

This may include:

• Supporting planning applications
• Preparing BS 5228 assessments
• Advising on Section 61 applications
• Producing noise and vibration management plans
• Recommending practical control measures
• Designing monitoring strategies
• Reviewing monitoring results
• Responding to local authority comments
• Helping investigate complaints

The aim is not to make construction silent. It is to understand the effects, reduce them as far as reasonably practicable and manage the remaining impact clearly.

Talk to auricl about construction noise control

If you are planning demolition or construction work and need advice on noise, vibration or monitoring, tell us about the project.

We can help you understand what is required, identify the main risks and recommend a practical next step.