Transit lines make life more accessible and connected, and living or working close to a rail line can be beneficial for many. But with the ease of mobility also come the challenges of ground-borne noise and vibration generated by passing trains.
If you’ve ever spent time in a building that’s above or close to a rail line, then you’ll likely have felt vibration through the building as a train passes by or moves through a nearby station. But there are ways to address this ground-borne vibration, especially if you consider it early in the construction process.
To understand how it can be addressed, vibration control in buildings starts with understanding the site before the foundation is designed.
Start With the Site | Where Is the Vibration Coming From?
When you’re constructing a new building in an urban area, accounting for ground-borne vibration should be part of the early planning process. To better understand the level of building vibration isolation your project may require, first look at and map out:
- Nearby commuter rail
- LRT or streetcar lines
- Nearby subway or underground rail lines
- Freight rail
- Existing vibration conditions
- Distance from potential vibration sources
- Site and soil conditions
It’s also important to note that screening criteria can vary according to rail type and building use.
Consider What’s Going Inside the Building
For buildings located near rail lines, ground-borne vibration can be a significant concern. As trains pass, vibrations can travel through the ground and into nearby structures, potentially affecting the comfort of residents, sensitive equipment and the overall performance of the space.
Not every building, or room within a building, has the same tolerance for vibration. For example, residential developments need to consider the comfort and sleep of residents, while hospitals and research facilities may contain sensitive equipment that can be affected by vibration. Spaces such as schools and offices also need to consider whether vibration could interfere with normal everyday activities.
That’s why an important step in planning vibration control for your project is understanding who and what will occupy the building. In the long run, this information can be just as important as understanding what’s happening outside it.
The Foundation Is Part of the Solution
Pliteq’s GenieMat® GBV is designed to help address issues before vibration enters the structure. Incorporated into the building’s foundation, GenieMat® GBV can help isolate the structure from vibration entering through the surrounding ground.
This can be particularly important for vibration-sensitive environments such as concert halls and theatres, recording studios, hospitals and research facilities, where even small amounts of vibration can be disruptive. GenieMat® GBV can also be used in residential and commercial developments near rail corridors to help improve residential and occupant comfort.
When ground-borne vibration is identified as a concern, the foundation design becomes an important part of the vibration-control strategy.
Why Timing Matters | Design Vibration Control Before You Build
Once foundation details, structural connections and surrounding construction are established, introducing isolation can become much more difficult.
Early coordination gives architects and engineers time to consider:
- Foundation and structural design
- Isolation locations
- Loads
- Required vibration performance
- Construction details
- Coordination between structural and acoustic teams
The key is to address potential vibration during design rather than waiting until occupants can feel it after construction.
Building Vibration Isolation With GenieMat® GBV
Urban development increasingly means building closer to the infrastructure that keeps cities moving. However, that doesn’t mean ground-borne vibration has to become an occupant problem.
Depending on the needs of the project, made from soft, rebonded-rubber material, GenieMat® GBV can help tackle vibration concerns from the ground up by offering:
- Natural frequencies down to 8 Hz
- Support for a variety of load ranges up to 10 MPa
- Dynamically soft performance for effective vibration isolation
- Resistance to mold, bacteria, fungi and water
- Long-term stability without breaking down or moving under load
By assessing the site, understanding sensitive occupancies and incorporating vibration control into the structural and foundation design early, project teams can plan for the challenge before construction makes the solution more complicated.
If you’re ready to address vibration at its source, contact Pliteq Acoustics. Our team can work with you to determine an appropriate building vibration isolation solution for your project before it ever becomes a problem.