Traffic-Induced Ground Vibration
ABOUTUS
Every passing train and heavy truck sends vibration into the ground — and into the buildings nearby. Measure what actually reaches a resident's floor or a lab's optical bench, not just what leaves the source.
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VLeq,T
The time-averaged vibration level typically used to characterize exposure over a monitoring period, not a single pass-by event
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VL5–VL95
Percentile levels that describe how often a given vibration level was exceeded — key to separating background from event-driven vibration
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2
Distinct concerns to evaluate separately — human perception and annoyance, and the far lower thresholds that apply to sensitive equipment or heritage structures
The Complaint Starts at the Foundation, Not the Track
Rail traffic, heavy road vehicles and nearby construction all inject vibration into the ground, which travels through the soil and into the foundations of surrounding buildings. What a resident feels in their living room, or what a sensitive instrument in a lab picks up, depends far more on the building's foundation, floor and distance from the source than on how strong the vibration was at the track or road itself.
That's why ground-borne vibration assessment is done with human-response instrumentation — reporting the statistical spread of vibration levels over a monitoring period (percentiles, VLeq) rather than a single peak reading — and, where the receiver is a hospital, lab or heritage building rather than a resident, against a far stricter threshold.
Aihua's environmental vibration analyzer and general-purpose vibration meters together cover both the community-impact assessment and the building-level spot-checks that go with it.
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Community & Residential Impact Assessment
Longer monitoring runs at a resident's floor or foundation, reporting VLeq,T and the percentile spread across normal traffic conditions — the standard approach to a complaint-driven or permit-related survey.
AWA5937 Hand-Transmitted Vibration Meter -
Routine Foundation Spot-Checks
Quick, one-key-switching readings at a building foundation or ground floor to confirm vibration is within an expected range before a longer survey is justified.
YT3001A Handheld Multi-Parameter Vibration Meter -
Precision Checks at Sensitive Sites
Labs, hospitals and heritage buildings often need to detect very low vibration levels well below what a person would notice — a job for a wider dynamic range and higher-sensitivity sensor.
YT3001B High-Sensitivity Multi-Parameter Vibration Meter
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Step 1 CalibrateVerify sensor sensitivity against a vibration calibrator before the session, so every subsequent reading is traceable.
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Step 2 Position at the ReceiverMount at the building's foundation or the floor of the affected space — not at the track or road — since that's where the assessment applies.
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Step 3 Re-Measure & TrendRepeat on a fixed interval, switching parameter as needed, and watch for a rising trend rather than reacting to one reading.
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Step 4 Diagnose & ScheduleOnce a trend is confirmed, use spectrum analysis to identify the likely fault and schedule the repair before it becomes a failure.
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Common Questions About Traffic- Induced Ground Vibration
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1. Why measure at the building instead of at the track or road?
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2.Why does AWA6257A report percentiles instead of a single number?
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3. When do I need YT3001B instead of YT3001A?
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4.Are residential comfort and equipment-sensitivity criteria the same?
Not sure which instrument fits your site?
We look forward to hearing from you.
Tel: +86-19012832378







