Floor Mount Vibration Isolator: Selection, Design & Applications

Mechanical equipment does not operate in isolation from the building that supports it. Fans, pumps, chillers, compressors, air handling units, and industrial machinery generate dynamic forces that can travel through equipment supports, housekeeping pads, structural floors, and connected building systems. When those forces reach occupied spaces or vibration-sensitive equipment, the result can include structure-borne noise, perceptible vibration, equipment movement, and reduced operating performance. A floor mount vibration isolator provides a resilient interface between equipment and its supporting structure, reducing the transmission of these dynamic forces when properly selected and installed.

Effective vibration isolation is more than choosing a mount based on equipment weight. Engineers must consider operating speed, excitation frequency, static deflection, natural frequency, dynamic stiffness, load distribution, equipment geometry, and the supporting structure. The right solution can differ substantially between a high-speed fan, a centrifugal pump, a chiller, and precision industrial machinery.

For U.S. construction projects, vibration control may also need to be coordinated with seismic restraint, equipment anchorage, MEP design, and applicable provisions of the International Building Code (IBC), California Building Code (CBC), and ASCE 7. Healthcare projects introduce additional coordination considerations involving HCAI, formerly OSHPD, and the specific requirements of the facility and authority having jurisdiction.

This guide explains how floor mounted vibration isolators work, how spring and elastomeric systems compare, how engineers approach selection, and what contractors and facility managers should consider during installation. It also explains where custom equipment bases, structural engineering, BIM coordination, seismic calculations, and custom fabrication can become part of a complete vibration-control solution.

What Is a Floor Mount Vibration Isolator?

A floor mount vibration isolator is a resilient support component installed between mechanical equipment and the structure beneath it. Its purpose is to reduce the transfer of dynamic forces generated by operating equipment into the supporting floor, foundation, or building structure.

Instead of creating a rigid connection, the isolator introduces controlled flexibility into the load path. Depending on the application, this may be achieved with steel springs, elastomeric materials such as neoprene or synthetic rubber, or a combination of resilient and restrained components.

How Floor-Mounted Isolation Works

Consider a pump installed directly on a concrete floor. As the motor and impeller rotate, dynamic forces can be generated by rotational imbalance, operating conditions, or other mechanical effects. A rigid support transmits much of that force directly into the structure. A properly selected isolator changes the dynamic response of the equipment-support system and can reduce the force transmitted into the building.

The isolator's behavior is influenced by its stiffness and the supported load. Static deflection is particularly important because it is related to the isolation system's natural frequency. Effective isolation generally requires the disturbing operating frequency to be sufficiently separated from the isolation system's natural frequency.

Why Mechanical Equipment Transmits Vibration

Rotating equipment is a common source of mechanical vibration. Fans, pumps, compressors, chillers, and other machinery can introduce periodic forces into their supports. Once these forces enter a structural floor, they can propagate beyond the immediate equipment location.

Consequently, equipment vibration isolators should be evaluated as part of the entire mechanical and structural system. Equipment geometry, mounting points, operating speed, foundation stiffness, piping connections, and adjacent structures can all influence actual performance.

How Floor Mount Vibration Isolation Reduces Structure-Borne Vibration

The effectiveness of floor mount vibration isolation depends on the dynamic relationship between the equipment and its supporting structure. Three concepts are especially important: excitation frequency, natural frequency, and transmissibility.

Equipment Excitation and Vibration Transmission

Every rotating machine has operating conditions that generate excitation forces. Operating speed is commonly expressed in revolutions per minute (RPM), but the relevant engineering evaluation concerns the frequency of the dynamic excitation and how it interacts with the isolation system.

If an isolation system is appropriately selected, the resilient support can reduce the dynamic force transferred to the structure. However, an isolator should not be evaluated solely by its appearance or nominal load rating.

Natural Frequency and Resonance

The isolation system has a natural frequency determined by its effective stiffness and supported mass. If the excitation frequency is near the system's natural frequency, vibration amplification can occur rather than effective isolation. This is why an isolator that is physically soft is not automatically a suitable isolator.

Engineers therefore evaluate the relationship between equipment operating frequency and isolation-system natural frequency. For many applications, a lower isolation-system natural frequency can provide stronger isolation at sufficiently higher operating frequencies, but the required characteristics depend on the equipment and project.

Static Deflection and Isolation Performance

Static deflection describes how much an isolator compresses under the supported static load. For spring isolators, greater static deflection generally corresponds to lower natural frequency. Elastomeric systems behave differently because their stiffness can be affected by material properties, geometry, temperature, frequency, and other factors.

Dynamic stiffness, damping, transmissibility, and load distribution also matter. A technically sound selection therefore considers the complete operating condition rather than using a single generic isolation percentage.

Types of Floor Mounted Vibration Isolators

Different equipment and operating environments require different isolation technologies. The primary categories used for floor-mounted applications include steel spring isolators, elastomeric mounts, rubber-in-shear mounts, and restrained or captive configurations.

Steel Spring Vibration Isolators

Steel spring isolators are commonly considered when relatively low natural frequencies and substantial static deflection are required. Their characteristics can make them useful for larger mechanical equipment and applications where low-frequency vibration isolation is important.

Spring systems may also incorporate housings, leveling mechanisms, restraints, or other components depending on the equipment and project requirements.

Neoprene and Elastomeric Isolators

Neoprene vibration isolators and other elastomeric mounts provide resilient support through engineered rubber compounds. Their compact geometry and inherent damping characteristics can make them suitable for a range of HVAC and mechanical equipment.

The actual performance of an elastomeric mount depends on its formulation, geometry, loading, temperature, and dynamic characteristics. Engineers should therefore evaluate manufacturer performance data rather than assuming all rubber isolators behave identically.

Restrained and Captive Vibration Isolators

Restrained or captive configurations can be appropriate when equipment movement must be controlled while maintaining resilient support. This distinction becomes especially important where vibration isolation must coexist with lateral or vertical restraint requirements.

A restrained isolator should be selected as part of the complete equipment-support system rather than treated as an interchangeable substitute for an unrestricted spring or elastomeric mount.

Rubber-in-Shear Mounts

Rubber-in-shear designs support loads through controlled deformation of elastomeric material. They can provide compact equipment isolation and are used in various mechanical and industrial applications.

The correct technology depends on load, operating frequency, required isolation performance, environmental exposure, equipment geometry, and project-specific constraints.

Spring vs. Elastomeric Floor Mount Vibration Isolators

Selecting between spring and elastomeric vibration isolation mounts for equipment requires more than comparing purchase price or physical dimensions. The two technologies have different mechanical characteristics and should be evaluated against the application's actual requirements.

Spring systems can be advantageous where low natural frequency and substantial deflection are required. Elastomeric systems can be attractive where compactness, damping, simplicity, or moderate isolation requirements are priorities.

Neither approach should be treated as universally superior. Equipment weight, operating RPM, load distribution, structural conditions, environmental exposure, and performance requirements should determine the selection.

For critical applications, engineers may also need to evaluate whether the selected isolator maintains adequate performance across expected operating conditions rather than relying on a single nominal rating.

How to Select a Floor Mount Vibration Isolator

Proper floor mounted equipment isolator selection starts with collecting accurate equipment and project information. A manufacturer catalog may provide a range of isolators, but the correct selection depends on how the equipment will actually be supported and operated.

Determine Equipment Operating Weight

Begin with the actual operating weight rather than relying only on shipping weight or an approximate equipment value. Operating weight may include fluids, accessories, filters, connected components, or other permanent loads.

Calculate Load Per Isolator

The total equipment weight should not simply be divided by the number of mounts unless the load is known to be distributed evenly. Equipment center of gravity, support-point geometry, frame stiffness, and mounting locations can produce different loads at individual isolators.

Each isolator therefore needs an appropriate working load range.

Evaluate Operating Speed and Excitation Frequency

Equipment RPM is a critical selection parameter for rotating machinery. The engineer should evaluate operating frequency and relevant excitation frequencies relative to the isolation system's natural frequency.

A mount that supports the equipment statically may still provide inadequate dynamic performance if its characteristics are inappropriate for the operating condition.

Establish Required Static Deflection

Static deflection is an important design variable because it influences natural frequency and isolation behavior. Required deflection depends on the desired performance and equipment characteristics rather than a universal value applicable to every machine.

Check Vertical and Lateral Stiffness

Vertical stiffness is only one part of the evaluation. Equipment can also experience lateral movement, rocking, and other dynamic responses. The isolator and mounting arrangement should provide appropriate stability while allowing the resilient behavior needed for vibration control.

Consider Equipment Center of Gravity

A high or offset center of gravity can influence overturning and load distribution. Mount locations should be evaluated relative to the equipment's center of gravity and structural support.

For complex equipment, a vibration isolation system design may require engineering analysis, detailed equipment data, and coordination drawings before final isolator selection.

Floor Mount Vibration Isolators for HVAC Equipment

HVAC systems are among the most common applications for HVAC vibration isolation mounts because rotating mechanical equipment can transmit vibration into occupied buildings.

Air Handling Units

Air handling units contain fans, motors, bearings, and other components that can generate dynamic forces. Floor-mounted units may be supported on spring or elastomeric isolation systems depending on size, operating characteristics, structural conditions, and project requirements.

The support arrangement should account for the unit's frame and actual mounting points rather than simply placing isolators at convenient locations.

Chillers and Pumps

Chillers and pumps can introduce significant mechanical vibration into mechanical rooms. Pumps also present dynamic considerations associated with motor operation, impeller behavior, piping connections, and equipment alignment.

The isolation system should be coordinated with piping and other connected services so that rigid connections do not create unintended vibration paths around the isolators.

Fans and Rotating Equipment

Fans are especially sensitive to rotational imbalance and operating conditions. The appropriate floor vibration isolator should be selected based on equipment characteristics rather than using the same mount configuration for every fan.

Compressors and Mechanical Room Equipment

Compressors and other rotating machinery can generate dynamic forces that require careful consideration of equipment support, operating frequency, structural response, and adjacent occupied spaces.

In hospitals, commercial buildings, data centers, and other facilities, reducing structure-borne vibration can be important for occupant comfort and the operation of vibration-sensitive systems.

Vibration Isolation for Industrial and Manufacturing Equipment

Industrial machinery can present more complex vibration-control requirements than conventional building HVAC equipment. Operating speeds, dynamic loads, duty cycles, equipment foundations, and nearby processes can all influence the isolation strategy.

Process Machinery

Process equipment may operate continuously and generate dynamic forces that affect both the supporting structure and nearby machinery. The appropriate industrial vibration isolation mounts should be selected according to actual operating conditions and required performance.

Manufacturing Equipment

Manufacturing machinery can include motors, pumps, compressors, presses, machine tools, and other equipment with very different excitation characteristics. Some applications prioritize vibration reduction for the surrounding structure, while others require protection of precision equipment from ambient vibration.

Aerospace and Precision Applications

Aerospace manufacturing and precision environments can have particularly demanding vibration-control objectives. Even relatively small levels of vibration may influence sensitive processes, measurement equipment, or adjacent operations.

Isolation should therefore be evaluated as part of the facility's broader vibration environment rather than as an isolated equipment accessory.

Industrial Equipment Foundations

The supporting foundation is part of the vibration-control system. Concrete equipment pads, inertia bases, structural steel frames, and other support arrangements can affect system response.

For heavier machinery, a properly engineered inertia base may be used to increase effective mass and improve stability. The design should account for equipment geometry, dynamic forces, foundation conditions, and the selected isolation system.

Floor Mount Vibration Isolator Installation Considerations

Even a correctly selected isolator can perform poorly if installation changes the intended load path. Installation quality is therefore an engineering consideration, not simply a construction detail.

Equipment Base and Mounting Configuration

Isolators should be located according to the equipment's structural frame and loading requirements. Improper placement can create uneven loading, excessive rocking, or overloading of individual mounts.

Isolation Base and Inertia Base Requirements

Some equipment can be supported directly on individual isolators. Other applications may benefit from an isolation base or inertia base that distributes loads and provides a more stable mounting platform.

Anchor and Mounting Hardware

Anchors and hardware should be compatible with the equipment, support structure, and project requirements. Where seismic restraint is required, the restraint system should be coordinated with the vibration isolation system.

Avoiding Isolation Short-Circuiting

One of the most common conceptual problems is creating an unintended rigid path around the isolator. Rigid piping, conduit, ductwork, structural connections, or other components can bridge the resilient interface and transmit vibration directly into the structure.

This is why mechanical equipment vibration isolation should be coordinated with MEP installation. Flexible connections, equipment alignment, clearances, and restraint details may all affect the final system.

Field adjustment is also important for systems with leveling or load-balancing provisions. The installed equipment should be checked to confirm that loads are properly distributed and that the isolators are functioning as intended.

Seismic Considerations for Floor-Mounted Vibration Isolation

Vibration isolation and seismic restraint address different engineering objectives. A vibration isolator is intended to reduce dynamic vibration transmission, while seismic restraint is intended to limit movement and maintain equipment stability under applicable seismic loading.

Vibration Isolation and Seismic Restraint

An unrestricted isolator may allow movement that is acceptable from a vibration perspective but unacceptable under seismic design requirements. Conversely, a rigid restraint can interfere with the isolation system if it creates a direct vibration path.

The solution is not necessarily to eliminate isolation. Instead, the equipment support and restraint system should be coordinated so that seismic requirements and vibration-control objectives are addressed together.

Restrained and Captive Isolators

Restrained or captive isolators can provide resilient support while incorporating controlled movement limits. Their suitability depends on the equipment, expected loads, restraint configuration, and project requirements.

Equipment Anchorage

Anchorage must be evaluated in relation to the supporting structure. The connection between equipment, isolator, support frame, housekeeping pad, and structural floor should form a coherent load path for applicable static and seismic forces.

Coordination With MEP Seismic Design

For U.S. projects, seismic design may involve provisions of ASCE 7, the adopted IBC, or state and local building codes such as the CBC in California. The exact requirements depend on project location, building classification, component characteristics, and adopted code edition.

Healthcare facilities may also require coordination with HCAI, formerly OSHPD, where applicable. Project-specific requirements should be reviewed rather than assuming that every floor-mounted isolator requires the same seismic configuration.

Common Floor Mount Vibration Isolator Selection Mistakes

Many vibration-control problems result from treating isolator selection as a simple catalog exercise. Several recurring mistakes can undermine otherwise sound equipment installations.

Choosing by Equipment Weight Alone

A mount can have sufficient static load capacity while still being inappropriate dynamically. Equipment weight must be considered together with operating frequency, required deflection, mounting geometry, and system stiffness.

Ignoring Operating Frequency

The relationship between excitation frequency and natural frequency is fundamental. Selecting a mount without evaluating operating speed can produce inadequate isolation or create an undesirable resonance condition.

Underestimating Dynamic Loads

Static equipment weight does not fully describe dynamic behavior. Rotating machinery can generate forces that vary with operating conditions, imbalance, equipment condition, and excitation frequency.

Incorrect Isolator Placement

Uneven load distribution can cause individual mounts to operate outside their intended range. Mount locations should reflect the equipment frame and center of gravity.

Creating Rigid Vibration Bridges

A properly selected isolator cannot compensate for a rigid connection that bypasses it. Piping, ducts, conduits, and structural members should be reviewed for unintended transmission paths.

Failing to Coordinate Seismic Requirements

Adding seismic restraints after the vibration isolation design is complete can create conflicts. Seismic restraint should be coordinated early enough to preserve the intended isolation behavior while satisfying applicable structural and code requirements.

These issues demonstrate why vibration isolation system design should consider the equipment, supporting structure, connected services, and project requirements as one system.

How Engineers Evaluate Floor Mount Vibration Isolation Performance

A technical evaluation of a floor mount vibration isolator involves more than confirming that the equipment is physically supported. Engineers need to determine whether the isolation characteristics are appropriate for the intended operating condition.

Load Distribution

Each isolator should support an appropriate portion of the equipment load. Uneven loading can change deflection and stiffness and may affect overall stability.

Static Deflection

Measured or calculated static deflection provides information about how the isolator responds to the equipment's supported weight. For spring systems, this parameter is particularly useful when assessing natural frequency.

Natural Frequency

The natural frequency of the isolation system should be evaluated relative to the equipment's operating and excitation frequencies. This relationship is central to determining whether the system is operating in an isolation region or near resonance.

Transmissibility

Transmissibility describes the relationship between dynamic input and transmitted response. Engineers can use it to evaluate how effectively the isolation system reduces vibration transmission under relevant operating conditions.

Dynamic Stiffness

Dynamic stiffness may differ from static stiffness, particularly for elastomeric materials. Temperature, frequency, strain amplitude, compound characteristics, and geometry can influence performance.

Field Verification and Adjustment

Depending on project requirements, field verification may include checking equipment alignment, isolator loading, deflection, clearances, restraint conditions, and vibration measurements.

Not every project requires the same level of analysis or field testing. The appropriate evaluation should reflect equipment sensitivity, project specifications, building use, structural conditions, and performance objectives.

Custom Floor Mount Vibration Isolation Solutions

Standard isolation products can address many applications, but some projects require components configured around unusual equipment geometry, support conditions, loading, or installation constraints.

Custom Equipment Bases and Support Frames

Custom equipment bases can distribute equipment loads across multiple isolators while accommodating specific mounting patterns. Structural steel frames and inertia bases may also provide a practical interface between equipment and the isolation system.

Custom Steel Fabrication

Custom fabrication can involve carbon steel, stainless steel, aluminum, structural steel, sheet metal, or other materials selected for the application. Fabricated components may include equipment frames, mounting assemblies, brackets, support structures, and related hardware.

BIM and 3D CAD Coordination

BIM and 3D CAD modeling can help coordinate equipment dimensions, isolator locations, support frames, access clearances, and adjacent MEP systems before fabrication or installation.

This is particularly valuable when multiple trades must coordinate around a mechanical equipment package.

Project-Specific Engineering Analysis

When standard floor mounted vibration isolators do not fully address the application, engineering review can help determine whether custom support geometry, isolation characteristics, seismic restraints, or structural modifications are appropriate.

The Sigma Source can integrate vibration-control requirements with structural engineering, seismic calculations, BIM/CAD coordination, and custom metal fabrication where the project calls for a coordinated approach. The specific engineering scope should always be established from project requirements and available equipment data.

How to Specify a Floor Mount Vibration Isolator for a U.S. Construction Project

A useful specification should provide enough information for the isolator to be selected and installed correctly. Procurement teams should avoid specifying a mount solely by product name or nominal load rating when the application requires engineered selection.

At minimum, the project documentation should identify the equipment type, operating weight, operating speed, number of mounting locations, approximate center of gravity, and support configuration. Where available, manufacturers should also receive information about dynamic operating conditions and required vibration performance.

The specification should address:

• Equipment identification and model

• Operating and maximum supported weight

• Number and location of isolators

• Estimated load per isolator

• Operating RPM and excitation frequency

• Required static deflection

• Isolation technology

• Vertical and lateral stiffness requirements

• Environmental exposure

• Equipment base or inertia base requirements

• Mounting and anchorage configuration

• Seismic restraint requirements

• Applicable IBC, CBC, and ASCE 7 provisions

• HCAI/OSHPD requirements where applicable

• Required calculations or engineering documentation

• Installation tolerances

• Leveling and field adjustment requirements

For procurement teams, this approach reduces the risk of receiving a nominally compatible component that does not meet the actual engineering requirements.

For engineers and specification writers, the goal is to define performance and application requirements clearly enough that the selected vibration isolation mounts for equipment can be evaluated against the intended operating conditions.

Frequently Asked Questions About Floor Mount Vibration Isolators

What is a floor mount vibration isolator?

A floor mount vibration isolator is a resilient support installed between mechanical equipment and the structure beneath it. It reduces the transfer of dynamic forces from equipment into the floor or foundation. Common technologies include steel springs, elastomeric mounts, neoprene isolators, and restrained configurations. The appropriate design depends on equipment weight, operating frequency, static deflection, mounting geometry, and required vibration performance.

How does a floor mount vibration isolator work?

The isolator introduces controlled flexibility between the equipment and structure. Instead of transmitting dynamic forces through a rigid connection, the resilient element responds to equipment movement and changes the dynamic force path. Its effectiveness depends on the relationship between excitation frequency and the isolation system's natural frequency, along with stiffness, damping, load distribution, and installation conditions.

What is the difference between spring and rubber vibration isolators?

Steel spring isolators and elastomeric isolators use different mechanisms and have different performance characteristics. Springs can provide substantial static deflection and are often considered for applications requiring low natural frequencies. Rubber or neoprene isolators provide resilient support with inherent damping and can be compact. The appropriate choice depends on the equipment and project requirements rather than a universal preference for one technology.

How do I select the right floor mount vibration isolator?

Start with accurate equipment information. Important inputs include operating weight, number of mounting points, load at each support, operating RPM, center of gravity, equipment geometry, structural support conditions, environmental exposure, and desired isolation performance. Engineers should then evaluate static deflection, natural frequency, dynamic stiffness, lateral stability, and any seismic restraint requirements before final selection.

Are floor mount vibration isolators suitable for HVAC equipment?

Yes. Floor-mounted isolation systems are commonly considered for air handling units, pumps, fans, chillers, compressors, and other mechanical equipment. The appropriate solution depends on the size and configuration of the equipment, operating conditions, required vibration performance, structural support, and project specifications. HVAC piping and duct connections should also be coordinated so they do not unintentionally bypass the isolation system.

Do vibration isolators provide seismic protection?

Not necessarily. Vibration isolation and seismic restraint have different functions. An isolator is intended primarily to reduce dynamic vibration transmission, while seismic restraints and anchorage address applicable seismic forces and equipment movement. On seismic projects, the two systems should be coordinated. Restrained or captive isolators may be appropriate for certain applications, but the required configuration depends on the project and applicable code provisions.

Are floor mounted vibration isolators required to comply with ASCE 7?

Whether and how ASCE 7 applies depends on the equipment, building, project conditions, and adopted code requirements. ASCE 7 contains provisions relevant to seismic design, including nonstructural components and their supports and attachments. It should not be interpreted as imposing an identical isolator requirement on every mechanical installation. Project-specific structural and MEP engineering should determine applicable requirements.

Can vibration isolators be used in hospitals?

Yes, and vibration control can be particularly important in healthcare facilities. Mechanical equipment may operate near patient-care areas, laboratories, imaging equipment, and other vibration-sensitive spaces. However, healthcare projects can involve additional requirements related to HCAI, formerly OSHPD, as well as project specifications and seismic requirements. Vibration isolation should be coordinated with structural, MEP, architectural, and facility requirements.

What is static deflection in a vibration isolator?

Static deflection is the amount an isolator deforms under the supported static load. It is an important parameter because it relates to the stiffness and natural frequency of an isolation system. For spring isolators, static deflection is often closely associated with natural-frequency calculations. Elastomeric systems require additional consideration because their dynamic behavior can differ from their static response.

Can floor mount vibration isolators be custom fabricated?

The isolator itself may be a standardized engineered component, while the surrounding equipment base, support frame, mounting assembly, or hardware can be custom fabricated. Custom fabrication can accommodate unusual equipment dimensions, mounting patterns, structural constraints, or load-distribution requirements. Materials may include carbon steel, stainless steel, aluminum, and structural steel depending on the application.

What information is needed to specify vibration isolation mounts?

A strong specification should include equipment identification, operating and maximum weight, mounting-point locations, number of isolators, estimated load per isolator, operating RPM, center of gravity, support conditions, environmental exposure, required static deflection, isolation objectives, equipment base requirements, and seismic restraint requirements. Drawings, equipment submittals, and project specifications can provide additional information needed for engineering review.

How can engineers verify that a vibration isolation system is properly selected?

Engineers can review the supported loads, isolator characteristics, static deflection, natural frequency, dynamic stiffness, equipment operating frequency, mounting geometry, and restraint configuration. Depending on the project, field verification may also involve checking alignment, deflection, clearances, load distribution, and vibration measurements. The appropriate verification method depends on equipment sensitivity, project specifications, structural conditions, and the performance objectives.

Conclusion: Selecting the Right Floor Mount Vibration Isolator

A floor mount vibration isolator should be treated as an engineered component of the equipment-support system rather than a generic mounting accessory. Effective vibration control depends on how the isolator interacts with the equipment, supporting structure, connected MEP systems, and operating environment.

The selection process begins with reliable equipment data: operating weight, mounting geometry, center of gravity, operating RPM, excitation characteristics, and support conditions. Engineers can then evaluate static deflection, natural frequency, dynamic stiffness, transmissibility, and lateral behavior to determine whether a spring, elastomeric, restrained, or other isolation configuration is appropriate.

Applications vary considerably. A compact neoprene mount may be appropriate for one mechanical installation, while a steel spring system, inertia base, or custom support frame may be more suitable for larger or lower-frequency equipment. Industrial machinery and precision manufacturing equipment can introduce additional requirements related to dynamic forces, foundations, duty cycles, and vibration-sensitive processes.

Seismic design adds another layer of coordination. Vibration isolation does not automatically satisfy seismic restraint requirements, and seismic restraints should not be added in a manner that unintentionally defeats the isolation system. Applicable provisions of ASCE 7, IBC, CBC, and project-specific HCAI/OSHPD requirements should be evaluated where relevant.

For complex applications, the most reliable approach is to consider vibration isolation, structural support, seismic restraint, equipment geometry, fabrication, and MEP coordination as interconnected engineering requirements. The Sigma Source can support that process through vibration-control solutions, structural and seismic engineering, BIM and 3D CAD coordination, and custom metal fabrication. The objective is not simply to place equipment on an isolator, but to develop a support arrangement that is technically appropriate for the equipment, building, and project requirements.