Building Vibration Isolation: Engineering Principles, Systems & Applications

Building vibration isolation is the engineered process of reducing unwanted vibration transmission between a vibration source, the building structure, and a sensitive receiver. Unlike a simple equipment-mounting decision, effective building vibration isolation requires an understanding of dynamic forces, excitation frequency, structural stiffness, damping, transmission paths, and the performance requirements of the space or equipment being protected.

Vibration can originate from HVAC equipment, pumps, fans, compressors, generators, industrial machinery, construction activity, transportation systems, or equipment operating in an adjacent area. Once generated, it can travel through concrete slabs, steel framing, equipment bases, foundations, piping, ductwork, conduit, and other rigid connections. The resulting vibration may affect occupants, sensitive instrumentation, precision manufacturing, laboratory operations, or other mechanical and electrical systems.

The appropriate solution therefore depends on the complete source–path–receiver relationship. Engineers may isolate vibration at the source using spring or elastomeric isolators, modify the transmission path through resilient interfaces, increase separation between a vibration source and sensitive space, or use receiver-side solutions such as floating floors. In many projects, several measures must work together.

For U.S. commercial, industrial, and institutional construction, vibration control also has to be coordinated with structural design, MEP systems, equipment requirements, project specifications, and, where applicable, seismic provisions. Codes such as the IBC and CBC and standards such as ASCE 7 may establish relevant structural or seismic requirements, while vibration criteria can also be defined by the owner, equipment manufacturer, project specifications, or facility type.

A technically sound approach begins by identifying the vibration mechanism before selecting hardware. This is where vibration isolation systems, structural engineering, seismic calculations, BIM/CAD coordination, and custom equipment-support fabrication can become parts of one coordinated engineering strategy.

What Is Building Vibration Isolation?

Definition and Engineering Purpose

Building vibration isolation is a controlled engineering method for reducing the transmission of dynamic vibration from a source to a structure or from a structure to a sensitive receiver. The objective is not necessarily to eliminate all movement. Instead, the goal is to reduce transmitted vibration to a level appropriate for the equipment, occupants, process, or facility.

A typical isolated mechanical system may place an isolator between equipment and a concrete housekeeping pad or structural floor. The isolator introduces controlled flexibility and changes the dynamic relationship between the equipment and supporting structure. Depending on the application, the system may use steel springs, elastomeric mounts, neoprene, wire rope isolators, resilient pads, or a more specialized isolation assembly.

Source Isolation vs. Receiver Isolation

Two fundamental strategies are source isolation and receiver isolation. Source isolation attempts to reduce vibration close to the equipment generating it. HVAC fans, pumps, compressors, and rotating machinery are common examples.

Receiver isolation protects the destination from vibration that has already entered the structural system. Floating floors, isolated equipment rooms, resilient support systems, and specially designed foundations can serve this purpose.

Why Building Vibration Is a Systems Problem

The isolator cannot be evaluated independently from the equipment base, floor, structural framing, anchors, flexible MEP connections, and surrounding structure. A properly selected equipment mount can lose much of its intended effectiveness if rigid piping or conduit creates a parallel vibration path.

For this reason, building vibration control often overlaps with structural engineering, MEP coordination, equipment support design, and construction detailing. The broader vibration isolation systems approach should therefore be based on the complete dynamic load path rather than on a single component.

How Vibration Travels Through a Building

Vibration Sources

Building vibration may be generated by rotating machinery, reciprocating equipment, HVAC systems, industrial processes, construction equipment, impact loads, elevators, transportation systems, or activities in adjacent facilities. The source's operating speed and dynamic force characteristics strongly influence the resulting vibration.

For example, an imbalance in a rotating fan can generate periodic forces at the shaft frequency and potentially at harmonic frequencies. A compressor may produce a more complex excitation spectrum, while construction activity can introduce transient or broadband vibration.

Transmission Paths

Once vibration enters a structure, it can travel through slabs, beams, columns, foundations, equipment bases, and structural connections. Mechanical systems create additional transmission paths. A rigid pipe connected to isolated equipment can transmit vibration around the isolator and into the building.

Ductwork, electrical conduit, cable trays, and structural brackets can similarly become unintended vibration bridges when they prevent the equipment from moving independently of the building.

Structure-Borne Vibration vs. Airborne Noise

Structure-borne vibration travels primarily through physical building elements. Airborne noise travels through the air and interacts with building surfaces as sound. The two can coexist, but they require different diagnostic and mitigation strategies.

A mechanical room may therefore require both vibration isolation and acoustic treatment, but acoustic treatment alone does not necessarily address structure-borne vibration.

The Source–Path–Receiver Model

A useful engineering framework is:

Source → Transmission Path → Structural Response → Receiver

If the source is strong but the transmission path is interrupted, the receiver may experience relatively little vibration. Conversely, even moderate source vibration can become problematic when a structure has favorable resonance characteristics or when a rigid path connects the source directly to a vibration-sensitive receiver.

This model helps engineers avoid treating every vibration problem as an equipment-mounting problem.

Key Engineering Principles of Building Vibration Isolation

Frequency and Excitation

Frequency is one of the most important variables in vibration isolation. Equipment speed is commonly expressed in RPM, while dynamic analysis uses frequency in cycles per second or hertz. A rotating machine operating at 1,800 RPM, for example, has a fundamental rotational frequency of approximately 30 Hz before harmonics and other forcing components are considered.

Isolation performance depends on the relationship between this excitation frequency and the natural frequency of the isolated system.

Natural Frequency

An isolated system behaves dynamically according to its mass, stiffness, and damping characteristics. For a simplified single-degree-of-freedom system, natural frequency is related to stiffness and mass. Increasing flexibility generally lowers natural frequency, while increasing stiffness generally raises it.

Static deflection is closely related to the effective natural frequency of many spring-based isolation systems. This is why selecting an isolator solely by its load rating can produce poor results: a mount can support the equipment without providing the required dynamic isolation.

Resonance

When excitation approaches the natural frequency of a system, dynamic amplification can occur. This condition is known as resonance. Isolation systems are generally intended to operate with sufficient frequency separation so that transmitted vibration is reduced rather than amplified.

The actual response depends on damping, forcing characteristics, structural modes, and the complete equipment-support system.

Damping and Stiffness

Stiffness influences deflection, load distribution, natural frequency, and movement. Damping affects the system's response near resonance and during transient events. The appropriate balance depends on whether the primary requirement is low-frequency isolation, equipment stability, shock response, movement control, or a combination of objectives.

Vibration criteria may be expressed using displacement, velocity, acceleration, or frequency-dependent limits. The correct measurement quantity depends on the application and the sensitivity of the receiver.

Types of Building Vibration Isolation Systems

Steel Spring Isolators

Steel spring isolators are widely used where substantial static deflection and low-frequency isolation are required. Their load capacity can be selected according to individual support reactions rather than simply dividing total equipment weight equally.

Spring systems are particularly relevant to large HVAC equipment, pumps, fans, chillers, and other machinery where low-frequency vibration is a significant concern. However, horizontal stability, operating movement, equipment geometry, and seismic restraint must also be considered.

Elastomeric and Neoprene Isolators

Elastomeric isolators use resilient materials such as neoprene, natural rubber, or engineered synthetic compounds. They can provide compact support with damping and stiffness characteristics that differ from steel springs.

Rubber-in-shear and rubber-in-compression configurations may be appropriate for smaller equipment, moderate isolation requirements, or applications where space and installation simplicity are important.

Wire Rope Isolators

Wire rope isolators use formed metallic cable elements to provide resilient support. Their multidirectional characteristics can make them useful for specialized machinery, shock-sensitive equipment, industrial environments, and applications requiring durable mechanical construction.

Isolation Pads and Floating Floors

Resilient isolation pads can be placed beneath equipment, support frames, or bases. For sensitive rooms, receiver-side solutions such as floating floors can separate the finished floor system from the structural slab.

Inertia bases add mass to an equipment-support assembly and can improve stability and influence dynamic response. None of these approaches is universally superior; selection depends on load, frequency, movement, environmental exposure, structural conditions, and performance criteria.

Building Vibration Isolation for Mechanical and HVAC Equipment

HVAC systems are among the most common sources of building vibration. Fans, pumps, compressors, chillers, air-handling units, and other rotating equipment can generate dynamic forces that enter mechanical-room floors and structural framing.

Air-Handling Units and Fans

Fan imbalance, motor forces, bearing conditions, and rotating components can produce vibration at the operating frequency and harmonics. Steel springs or elastomeric isolators may be selected according to equipment loading and required dynamic performance.

Flexible duct connections are important because a rigid duct connection can transfer movement directly into the building and compromise equipment isolation.

Pumps, Chillers, and Compressors

Pumps and compressors can transmit vibration through their support points and connected piping. An isolation strategy should therefore consider both the equipment base and the piping system.

A pump mounted on effective isolators may still transmit substantial vibration through rigid piping if the piping connection prevents expected movement or creates a stiff parallel path.

Rooftop Mechanical Equipment

Rooftop applications introduce additional considerations, including structural capacity, wind exposure, weather, temperature, equipment movement, seismic restraint, and attachment geometry. The roof assembly must support both static and dynamic loads while maintaining appropriate equipment clearances.

Mechanical Rooms

Mechanical-room isolation should be coordinated with concrete housekeeping pads, structural framing, equipment layouts, piping, ductwork, access requirements, and maintenance zones. Equipment weight should be evaluated at actual support points, particularly where the center of gravity is offset or the equipment has uneven internal loading.

Effective HVAC vibration isolation is therefore a complete equipment-support strategy rather than simply a selection of mounts beneath the equipment.

Building Vibration Isolation for Industrial and Vibration-Sensitive Facilities

Industrial facilities can present more demanding vibration-control requirements because machinery may operate continuously, at high speed, or with significant dynamic forces. Production equipment may also be sensitive to vibration generated elsewhere in the facility.

Motors, pumps, compressors, machine tools, process equipment, and production lines can all generate dynamic excitation. In precision manufacturing, the acceptable vibration level may be determined not by structural comfort but by process tolerances or sensitive instrumentation.

Laboratories, semiconductor facilities, cleanrooms, and research environments can be particularly sensitive to floor vibration. In these applications, owner-defined vibration criteria may establish requirements for specific equipment or spaces. A solution that is adequate for ordinary mechanical-room equipment may therefore be inappropriate for a precision laboratory.

Aerospace and advanced manufacturing facilities may combine large industrial equipment with highly sensitive measurement or production systems. This makes the source–path–receiver relationship especially important. Engineers may need to evaluate operating frequencies, structural modes, floor stiffness, equipment foundations, and vibration measurements before selecting an isolation strategy.

Data centers and other mission-critical facilities require similarly careful coordination. Mechanical systems such as chillers, pumps, fans, and generators may create vibration while sensitive equipment occupies nearby spaces. The appropriate design should be based on actual project criteria rather than unsupported assumptions about acceptable vibration levels.

For industrial applications, vibration isolation may also involve environmental considerations. Marine or corrosive environments can require appropriate material selection, protective coatings, stainless steel components, or other corrosion-resistant construction.

How Engineers Evaluate Building Vibration

Effective building vibration analysis begins with establishing what is generating the vibration and under what operating conditions.

Establishing the Vibration Source

Engineers may collect equipment manufacturer data, operating RPM, equipment weight, support reactions, dynamic force information, installation location, and operating schedules. For existing facilities, vibration may need to be investigated while the equipment is operating under representative conditions.

Measuring Existing Vibration

Baseline surveys can use accelerometers and other vibration-monitoring instruments to characterize acceleration, velocity, displacement, and frequency content. Frequency-domain analysis can help identify dominant excitation frequencies and distinguish equipment-related vibration from structural or environmental sources.

Evaluating the Transmission Path

The investigation then follows the vibration path through concrete slabs, structural framing, equipment supports, foundations, piping, ductwork, and other connections. This step is particularly important because the strongest transmission path may not be the most obvious one.

Assessing the Receiver

The receiver could be an occupant area, laboratory instrument, precision manufacturing process, medical space, sensitive electronic equipment, or another mechanical system. Its allowable vibration level determines how much reduction may actually be required.

Structural Dynamic Analysis

For complex projects, engineers may use structural modeling, modal analysis, finite element analysis, or other dynamic evaluation methods. These tools can help determine whether the structural system itself is contributing to the problem and whether changing equipment isolation alone is sufficient.

This engineering process provides a defensible basis for selecting isolation hardware rather than relying on generic product recommendations.

Designing the Right Building Vibration Isolation Strategy

The correct isolation strategy begins with a clearly defined performance objective. Is the project primarily concerned with equipment vibration, floor vibration, structure-borne noise, sensitive instrumentation, occupant comfort, or several of these conditions simultaneously?

The next step is to evaluate the source frequency and isolation-system characteristics. Equipment RPM, forcing frequency, harmonics, static load, spring rate or elastomer stiffness, damping, and expected deflection all influence performance.

Load distribution is equally important. An equipment assembly may have four, six, or more mounting points, but individual reactions are not necessarily equal. Center-of-gravity location, equipment geometry, and support arrangement can create significantly different loads at each isolator.

Movement and stability must also be considered. A highly flexible isolation system may provide low natural frequency but allow greater movement. That movement may affect connected piping, ductwork, electrical systems, access, alignment, or equipment stability.

Environmental conditions can further influence material selection. Rooftop equipment may face ultraviolet exposure, moisture, temperature cycling, and corrosion. Industrial or marine environments may require protective coatings or corrosion-resistant materials.

Finally, installation requirements must be verified. Isolators need suitable support surfaces, correct positioning, leveling, appropriate clearances, and compliance with manufacturer instructions. Where seismic restraints are required, the restraint configuration should be coordinated with normal isolation movement.

The resulting design should address performance, structure, MEP interfaces, environment, installation, and maintenance as one system.

Coordinating Building Vibration Isolation With Structural and MEP Systems

Building vibration isolation is most effective when structural and MEP coordination begins early. A structural floor may have adequate static capacity but still exhibit dynamic behavior that affects vibration-sensitive equipment or occupied areas.

Concrete slab thickness, reinforcement, framing arrangement, span, support conditions, and foundation characteristics can influence floor response. Equipment support reactions should be communicated to the structural engineer where significant loads or unusual support configurations are involved.

Housekeeping pads and equipment bases also matter. A properly designed base can distribute equipment loads and provide a stable interface with the isolation system. However, it should not be assumed that simply adding concrete automatically improves vibration performance.

MEP connections are another critical interface. Rigid piping can bypass equipment isolation, while rigid ductwork can restrict equipment movement. Electrical conduit and cable connections may create similar problems. Flexible connections should therefore be selected and detailed according to expected movement and project requirements rather than treated as generic accessories.

BIM and 3D CAD coordination can make these relationships easier to resolve. Equipment dimensions, isolator locations, support frames, structural members, piping, ductwork, conduit, access clearances, and restraint hardware can be reviewed before fabrication or installation.

For complex projects, this coordination can connect structural engineering services with equipment isolation, MEP design, and fabrication documentation. It can also reduce field conflicts by establishing the geometry of the complete support assembly before fabrication begins.

Building Vibration Isolation, Seismic Protection, and Code Requirements

Operational vibration isolation and seismic restraint are related but distinct engineering functions. Vibration isolation addresses dynamic forces generated during normal operation or environmental vibration, while seismic restraint addresses earthquake-induced forces and movement.

An isolated piece of equipment may therefore need both an isolation system and a seismic restraint strategy. Restrained spring isolators and other seismic-restrained configurations can limit excessive movement while preserving an intended isolation arrangement, but restraint components must be evaluated as part of the complete load path.

Anchors, brackets, base plates, support frames, and structural attachments transfer seismic forces into the supporting structure. An isolator cannot compensate for inadequate anchorage or insufficient structural capacity.

Depending on project location and applicable requirements, seismic design may involve the IBC, CBC, ASCE 7, local amendments, project specifications, and AHJ requirements. The applicable provisions depend on factors such as occupancy, seismic design criteria, equipment characteristics, structural system, and code edition.

California healthcare projects can involve additional requirements associated with HCAI, formerly OSHPD. Equipment anchorage, seismic restraint, documentation, and approval requirements should be evaluated according to the specific healthcare project and applicable HCAI criteria.

This distinction is important because a product marketed as a “seismic isolator” should not automatically be treated as compliant for every application. Code compliance depends on the complete engineered system, including the equipment, restraints, anchors, supporting structure, calculations, and project-specific requirements. Appropriate seismic calculations and seismic bracing systems may form part of that evaluation where applicable.

Common Building Vibration Isolation Design Mistakes

One of the most common mistakes is treating the isolator as the entire solution. An isolator can only control vibration that passes through the path it is designed to interrupt. Rigid piping, ductwork, conduit, structural brackets, and other connections may create parallel transmission paths.

Another common error is selecting an isolator based solely on equipment weight. Weight determines an important part of the loading condition, but it does not establish whether the isolator provides appropriate natural frequency, static deflection, damping, stability, or movement characteristics.

Ignoring operating frequency can be equally problematic. Equipment speed and harmonic excitation should be compared with the isolation system's dynamic characteristics. A support system that carries the correct load may still perform poorly if the frequency relationship is unfavorable.

Structural dynamics should not be overlooked. A flexible isolator cannot correct every problem caused by a flexible floor, poorly supported structural member, or unfavorable building mode.

Low-frequency vibration can also require specialized attention because achieving meaningful separation from low excitation frequencies may require substantial flexibility and deflection.

Finally, field conditions must be verified. Actual equipment operating speed, installed loads, support surfaces, clearances, MEP connections, and installation tolerances may differ from early design assumptions. Where practical, field measurements can provide valuable confirmation of actual performance.

Engineering Services and Custom Solutions for Building Vibration Control

Building vibration isolation projects can range from straightforward equipment isolation to multidisciplinary engineering problems involving structural dynamics, seismic restraint, BIM coordination, and custom fabrication.

Vibration isolation engineering may involve evaluating equipment weight, support reactions, excitation frequency, natural frequency, static deflection, stiffness, damping, movement, and environmental conditions. The appropriate level of analysis depends on project complexity and performance requirements.

Structural and seismic engineering can then address floor capacity, support reactions, equipment anchorage, seismic restraints, and structural load paths. These functions should remain distinct from vibration analysis while being coordinated within the overall equipment-support strategy.

BIM 3D CAD modeling provides another layer of coordination. A three-dimensional model can establish equipment geometry, isolator locations, support frames, structural interfaces, MEP routing, maintenance clearances, and fabrication requirements.

Where standard components do not match the required geometry, custom support frames, mounting plates, brackets, equipment bases, and restraint assemblies can be fabricated from carbon steel, stainless steel, structural steel, aluminum, or other appropriate materials. Welding, forming, machining, galvanizing, and powder coating can then be specified according to structural and environmental requirements.

This engineering-to-fabrication workflow allows the design to move logically from analysis → isolation selection → structural coordination → BIM/CAD → fabrication → installation.

For projects requiring a coordinated approach, The Sigma Source can bring vibration isolation products, structural engineering, seismic calculations, BIM/CAD modeling, and custom metal fabrication into the same technical workflow. The objective is not to make every project more complicated, but to match the engineering effort and isolation strategy to the actual performance requirements.

How to Approach a Building Vibration Isolation Project

A reliable building vibration isolation strategy starts with the question: What vibration needs to be controlled, where is it coming from, and what must be protected?

The source should be characterized by operating condition, dynamic forces, frequency, location, and equipment support configuration. The transmission path should then be examined through the floor, framing, foundations, equipment bases, piping, ductwork, conduit, and other structural or MEP connections.

The receiver's sensitivity establishes the performance objective. A conventional mechanical room may have very different requirements from a semiconductor process area, laboratory, hospital environment, precision manufacturing facility, or vibration-sensitive instrumentation space.

Once the objective is established, engineers can evaluate spring isolators, elastomeric mounts, wire rope isolators, pads, floating floors, inertia bases, or combinations of these approaches. Load distribution, natural frequency, damping, movement, stability, environmental exposure, structural capacity, and installation requirements should all be included in the selection.

Seismic requirements should then be evaluated independently but coordinated with the isolation strategy. Where applicable, anchors, restraints, structural attachments, and the seismic load path should be documented according to the project's governing requirements.

Finally, BIM/CAD coordination and fabrication documentation can resolve equipment-support geometry before installation. This is particularly valuable when custom frames, mounting plates, brackets, or restraint assemblies are required.

The strongest approach to building vibration isolation is therefore not simply choosing a mount. It is developing a coordinated engineering solution that connects vibration analysis, structural behavior, equipment requirements, MEP interfaces, seismic considerations, and field installation.

Frequently Asked Questions About Building Vibration Isolation

What is building vibration isolation?

Building vibration isolation is an engineering approach used to reduce vibration transmission between a vibration source and a structure or sensitive receiver. Isolation may be applied directly beneath mechanical equipment, within a support frame, between a floor finish and structural slab, or at another point in the transmission path. The appropriate location depends on the source–path–receiver relationship and the performance objective.

What causes vibration in buildings?

Common sources include HVAC fans, pumps, chillers, compressors, generators, rotating machinery, industrial production equipment, construction activity, transportation systems, impact loads, and neighboring facilities. The resulting vibration depends on more than the source itself. Operating frequency, dynamic force, equipment location, structural stiffness, connections, and transmission paths all influence how vibration reaches another space.

How does building vibration travel through a structure?

Vibration can travel through concrete slabs, beams, columns, structural steel, foundations, equipment bases, and other rigid connections. Mechanical systems can create additional paths through piping, ductwork, conduit, and equipment connections. For this reason, identifying the complete transmission path is often more useful than examining only the equipment that initially generates the vibration.

What is the difference between building vibration isolation and vibration control?

Vibration control is the broader engineering discipline covering methods used to reduce, redirect, absorb, or manage vibration. Building vibration isolation is one strategy within that discipline. Other approaches may include source modification, structural stiffening, damping, equipment isolation, floating floors, resilient supports, and receiver-side protection.

What type of isolator is best for building vibration isolation?

There is no universally best isolator. Steel spring isolators may be appropriate when substantial static deflection and low natural frequency are required. Elastomeric or neoprene mounts can provide compact resilient support with different stiffness and damping characteristics. Wire rope isolators and specialized isolation pads may be appropriate for particular industrial, shock, or environmental applications. Selection should be based on loading, excitation frequency, required performance, movement, stability, environment, and structural conditions.

Does building vibration isolation require structural engineering?

Not every application requires the same level of structural analysis. Structural engineering may be appropriate when equipment loads are significant, floor or foundation conditions are uncertain, vibration affects the structural response, unusual support configurations are involved, or seismic anchorage is required. Vibration performance and structural capacity are related but distinct considerations and should not be treated as interchangeable.

Can HVAC equipment cause building vibration?

Yes. Fans, pumps, compressors, chillers, and air-handling equipment can generate dynamic forces that enter floors and structural framing. Effective HVAC isolation may require equipment isolators together with suitable equipment bases, flexible piping and ductwork connections, structural support, and appropriate clearances. A rigid connection can create a vibration bridge that reduces the effectiveness of otherwise appropriate isolation hardware.

How is vibration measured in buildings?

Engineers can use accelerometers and vibration-monitoring equipment to measure acceleration, velocity, or displacement. Measurements may be evaluated in both the time and frequency domains. Frequency analysis can help identify dominant equipment frequencies, harmonics, structural responses, and other vibration sources. Existing-building investigations are generally most useful when measurements are taken under representative operating conditions.

What is structure-borne vibration?

Structure-borne vibration is vibration transmitted through physical building elements. For example, vibration generated by a pump may enter an equipment base, travel through a concrete housekeeping pad and slab, continue through structural framing, and reach an occupied area or sensitive instrument. This differs from vibration or noise transmitted primarily through the air.

How do flexible MEP connections affect vibration isolation?

Rigid piping, ductwork, conduit, and electrical connections can create unintended vibration bridges between isolated equipment and the building structure. Flexible connections can accommodate expected equipment movement and help interrupt rigid transmission paths. Their movement capacity, installation, durability, and compatibility with the equipment and project requirements must still be evaluated as part of the complete system.

Are building vibration isolation and seismic restraint the same thing?

No. Vibration isolation primarily addresses operational or environmental vibration, while seismic restraint addresses earthquake-induced forces and movement. An equipment assembly may require both. In such cases, seismic restraints, anchors, structural attachments, and load paths should be evaluated separately from normal vibration-isolation performance and coordinated so restraint requirements do not unnecessarily compromise intended isolation movement.

What standards apply to building vibration isolation?

There is no single universal code provision governing every building vibration-isolation application. Depending on the project, engineers may need to consider the IBC, CBC, ASCE 7, local building requirements, project specifications, owner-defined vibration criteria, manufacturer requirements, and AHJ requirements. California healthcare facilities may have additional HCAI requirements. The applicable criteria should always be established for the specific project, occupancy, equipment, structural system, and design conditions.

Can building vibration isolation be used in hospitals and healthcare facilities?

Yes. Hospitals and medical centers may use vibration isolation for HVAC equipment, pumps, fans, compressors, generators, and other mechanical systems. Healthcare projects can also have specific seismic, anchorage, documentation, and approval requirements. In California, applicable HCAI requirements should be evaluated alongside the project's structural, mechanical, vibration, and seismic criteria rather than treating vibration isolation as an isolated product decision.