Construction vibration: damage limits and human response
Peak particle velocity thresholds for building damage sit far above the levels at which residents complain. How to predict, monitor and manage the gap.
Construction vibration planning arguments almost always confuse two different questions. One is whether the ground borne vibration from your piling rig will crack a neighbour's plaster. The other is whether people living 40 metres away will feel it and ring the council. The first is answered at around 15 millimetres per second peak particle velocity. The second is answered at around 1 millimetre per second, which is fifteen times lower.
That gap is the whole subject. A scheme can sit an order of magnitude below any damage threshold and still generate a stream of complaints, an environmental health investigation and a stop on work at the worst possible point in the programme.
What peak particle velocity measures
Peak particle velocity, written as PPV and measured in millimetres per second, describes how fast a point in the ground or in a building is moving as a vibration wave passes. It is not displacement and it is not acceleration, and the distinction matters because the human response literature and the building damage literature use different quantities.
For construction work in the United Kingdom the reference document is BS 5228-2, the code of practice for noise and vibration control on construction and open sites. It deals in resultant PPV, measured with a triaxial geophone, and it separates transient events such as impact piling from continuous sources such as vibratory rolling.
Alongside it sits BS 6472-1, which handles human response to vibration in buildings using vibration dose values rather than PPV. Vibration dose values take exposure duration into account, which is why a source that is briefly intense can score better than a source that hums all day.
Frequency matters as much as amplitude. Lower frequency vibration moves a building structure more for the same velocity, which is why the damage guidance is expressed as a curve rather than a single figure.
Thresholds for cosmetic damage
BS 5228-2 gives guidance values for the onset of cosmetic damage, meaning hairline cracking in plaster and mortar rather than anything structural. For residential and light commercial buildings and transient vibration, the guidance starts at 15 mm/s at 4 Hz and rises with frequency, reaching 20 mm/s at 15 Hz and 50 mm/s at 40 Hz and above. Reinforced or framed structures are given a flat 50 mm/s from 4 Hz upwards.
Two adjustments apply in practice. For continuous rather than transient vibration the guidance values are reduced, by up to half. And for buildings in poor condition, listed structures or those with existing movement, a project specific limit is set well below the published figures by the engineer, often at 5 mm/s or lower.
Structural damage sits at considerably higher levels than cosmetic damage. In the normal run of urban construction it is not the constraint. What actually constrains the works is the complaint level, which is where the next section starts.
The levels at which people complain
The human response guidance in BS 5228-2 runs roughly as follows.
| Approximate PPV | Typical response in a residential setting |
|---|---|
| 0.14 mm/s | Might be just perceptible in the most sensitive situations |
| 0.3 mm/s | Might be just perceptible in residential environments |
| 1.0 mm/s | Complaint is likely, although it can be tolerated where prior warning and explanation have been given |
| 10 mm/s | Likely to be intolerable for anything more than very brief exposure |
Read that table next to the damage figures and the practical position becomes clear. Complaints begin at about one fifteenth of the level that produces a hairline crack. So an operation that is comfortably safe can still be unacceptable.
The row that repays attention is the third one. Prior warning and explanation move the threshold. That is not a public relations point, it is in the standard, and it is the lowest cost mitigation available on any site.
Residents also attribute existing cracks to the works. A house that already had settlement cracking in 2019 will have those cracks reported in week two of piling, and without a record of the pre-existing condition the argument is unwinnable.
Piling and groundworks ranked by what they generate
Method selection does more for vibration than any amount of monitoring. Broadly, from highest to lowest ground borne vibration:
- Impact driven piling, whether concrete or steel, which delivers a high energy transient with every blow.
- Vibratory driving and extraction of sheet piles, which is continuous rather than transient and often the worst source for complaints.
- Dynamic compaction and heavy vibratory rolling.
- Continuous flight auger piling, which generates modest vibration but brings its own noise and spoil issues.
- Rotary bored piling and pressed in sheet piles, which are the quiet options and also the expensive ones.
Ground conditions change the ranking. Stiff clays and rock transmit vibration efficiently, so a rotary rig in rock can exceed a driven pile in soft alluvium at the same distance. Made ground and loose sands attenuate quickly.
Distance is the other lever, and attenuation with distance is steep close to the source. Moving a rig 10 metres further from a boundary often does more than changing the method, and it costs nothing if the layout is fixed early.
Pre-condition surveys
A pre-condition survey, sometimes called a dilapidation or schedule of condition survey, records the state of neighbouring property before work starts. It is not a planning requirement in most cases. It is the single most useful document you will have if a claim arrives.
Scope it by distance rather than by goodwill. A common approach is a full internal and external survey within a defined radius of the works, with external only beyond that, the radii set by the engineer from the predicted vibration contours rather than by a round number.
The survey should be photographic and dated, with crack widths recorded against a scale, and it should be carried out by someone independent. Where a party wall is involved, the Party Wall etc. Act 1996 brings its own schedule of condition process and its own surveyors, and the two exercises should be coordinated rather than duplicated.
Offer access politely and record refusals. A neighbour who declined access before the works is in a weaker position afterwards than one who was never asked.
Monitoring, trigger levels and the response
Set trigger levels before the first rig arrives, in writing, agreed with the environmental health officer where a condition requires it.
A workable structure uses two levels. An amber level, set at a value that indicates the works are trending towards the limit, which triggers an investigation and a method review. And a red level, set below the damage guidance with a margin, which triggers an immediate stop and a written report before work restarts.
Monitors go on the nearest sensitive receptor rather than on the site boundary, because boundary readings tell you about the site and not about the neighbour. Continuous logging with remote alerts now costs little enough that spot measurements are hard to defend.
The response procedure matters more than the equipment. Name the person who receives the alert, state what they do within what period, and record every exceedance with the activity that caused it. A monitoring record without an activity log is close to useless when the complaint arrives three weeks later.
What belongs in the construction management plan
Vibration is normally secured through a planning condition requiring a construction management plan, and separately through section 61 prior consent under the Control of Pollution Act 1974 where the contractor wants certainty about working methods and hours.
The plan should carry the predicted vibration levels at the nearest receptors, the method statement for each significant operation, the monitoring positions and trigger levels, the response procedure, the pre-condition survey scope, and the complaints procedure with a named contact and a response time. A Construction Management Plan drafted with those headings is far easier to discharge than a generic document.
Where the same scheme has an operational noise issue as well as a construction one, keep them separate in the evidence. A Noise Impact Assessment deals with the completed development, and councils usually expect a suitably qualified acoustician, with professional review strongly advised. Construction effects sit in the management plan. Mixing them produces a document that satisfies neither officer, and the same discipline applies to the servicing hours question covered in our note on night deliveries and servicing noise.
One last point that catches developers out. A planning permission does not authorise a nuisance. Vibration falls within the statutory nuisance regime because noise is defined to include it, so an abatement notice remains available to the council after permission is granted, as set out in our piece on statutory nuisance after permission.
Browse all 66 PlanScope report types to see which documents your scheme is likely to need.
This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
What PPV level damages a house?
BS 5228-2 gives cosmetic damage guidance for residential and light commercial buildings starting at 15 mm/s at 4 Hz, rising to 20 mm/s at 15 Hz and 50 mm/s at 40 Hz and above. Values are reduced for continuous rather than transient vibration, and set lower again for buildings in poor condition or of heritage interest.
At what level will neighbours notice construction vibration?
Around 0.3 mm/s is where vibration might be just perceptible in a residential setting, and complaint becomes likely at about 1 mm/s. That is roughly one fifteenth of the cosmetic damage guidance, which is why a site can be entirely safe and still generate sustained complaints from people living nearby.
Which piling method produces the least vibration?
Pressed in sheet piles and rotary bored piling generate the least ground borne vibration, followed by continuous flight auger piling. Impact driven piling and vibratory sheet pile driving generate the most. Ground conditions change the ranking, because stiff clays and rock transmit vibration far more efficiently than made ground or loose sand.
Do I need a pre-condition survey?
It is rarely a planning requirement but it is the document that decides a later claim. Record the internal and external condition of neighbouring property with dated photographs and crack widths against a scale, using an independent surveyor, with the radius set from predicted vibration contours rather than a round number.
Can the council act on vibration after permission is granted?
Yes. A planning permission does not authorise a nuisance, and vibration falls within the statutory nuisance regime because noise is defined to include it. An abatement notice remains available to the local authority. Section 61 prior consent under the Control of Pollution Act 1974 gives a contractor more certainty about methods and hours.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.