Modular Building Systems

Modular Building Types

Key Benefits of Modular Construction

• Fast Installation: 50-75% faster than traditional construction, minimal site disruption
• Cost Effective: 20-40% lower cost vs. stick-built facilities of comparable size
• Relocatable: Structures can be disassembled and moved to new locations
• Code Compliant: Engineered to meet IBC, OSHA, ADA, and local building codes
• Expandable: Add modules as space requirements grow
• Minimal Downtime: Off-site fabrication allows continued operations during installation

In-Plant Office Construction

In-plant offices provide comfortable, climate-controlled workspace within industrial facilities without the cost and disruption of conventional construction.

Standard Features

• Wall Systems: Vinyl-covered gypsum on steel studs with R-13 insulation
• Windows: Thermalpane glass for visibility and supervision
• Doors: Insulated steel doors with locksets and closers
• Ceiling: 2×4 acoustic tile in suspended grid, 8' or 9' heights
• Flooring: Vinyl composition tile or carpeting over plywood subfloor
• Electrical: Surface-mounted outlets, switches, and fluorescent lighting
• HVAC: Self-contained heating and cooling units sized for space

Configuration Options

• Single Office: 8×8 to 12×16 individual offices
• Multi-Room: Partitioned spaces with hallways and doors
• Open Plan: Large open areas for collaborative workspaces
• Conference Rooms: Meeting spaces with glass partitions
• Storage Rooms: Secure spaces for files and supplies

Mezzanine Office Systems

Mezzanine offices create second-story workspace above production or warehouse floors, maximizing facility cube utilization without building additions.

Structural Integration

• Self-Supporting: Independent column structure requires no building attachment
• Rack-Supported: Office platforms integrate with pallet racking structure
• Building-Attached: Ledger beams anchor to existing building columns
• Load Capacities: Structural design for office live loads (50-100 PSF)
• Accessibility: Stairways, elevators, or lifts for ADA compliance when required

Clean Room Design & Certification

Modular clean rooms provide controlled environments for sensitive manufacturing, assembly, and testing operations with ISO certification levels.

Clean Room Classes

• ISO Class 5 (Class 100): Pharmaceutical manufacturing, sterile compounding
• ISO Class 6 (Class 1000): Medical device assembly, optics manufacturing
• ISO Class 7 (Class 10,000): Electronic component assembly, food packaging
• ISO Class 8 (Class 100,000): General cleanroom applications, packaging

Clean Room Components

• Wall Systems: Smooth, non-shedding panels with radius corners
• HEPA Filtration: 99.99% efficient air filtration systems
• Positive Pressure: Maintain higher pressure than surrounding areas
• Airlocks: Entry vestibules prevent contamination ingress
• Pass-Throughs: Transfer materials without personnel entry
• ESD Protection: Conductive flooring and grounding for electronics

Panel Systems & Materials

Modular building quality depends on panel construction, insulation values, and finish durability for industrial environments.

Wall Panel Options

• Standard Vinyl: Vinyl-covered gypsum, economical and durable
• Painted Steel: Powder-coated steel panels for washdown environments
• FRP Panels: Fiberglass-reinforced plastic for food and pharma
• Stainless Steel: 304 or 316L stainless for clean rooms
• Insulated Metal: Foam-filled metal panels for superior thermal performance

Electrical & Data Systems

Complete electrical distribution and data infrastructure ensure offices meet modern workplace technology requirements.

Electrical Features

• Service Capacity: 100-400 amp panels sized for loads and future expansion
• Outlets: Duplex receptacles at 6-8 foot spacing along walls
• Lighting: LED fixtures with daylight sensors and occupancy controls
• Emergency Lighting: Battery backup for egress lighting
• Data Infrastructure: Cat6 structured cabling with patch panels
• Fire Alarm: Integrated smoke detection and notification systems

HVAC & Climate Control

Proper climate control ensures comfortable working conditions and maintains productivity in in-plant office environments.

HVAC Options

• Package Units: Self-contained heating and cooling for small offices
• Split Systems: Remote condensers for larger installations
• Tie-In Systems: Connect to existing building HVAC infrastructure
• Heat Pumps: Efficient heating and cooling in moderate climates
• Dedicated Outdoor Air: Fresh air ventilation for occupied spaces

Permitting & Code Compliance

Modular buildings must meet the same codes and standards as conventional construction, requiring proper engineering and permitting.

Code Requirements

• Building Codes: IBC (International Building Code) compliance
• Fire Codes: NFPA 101 Life Safety Code, sprinkler requirements
• Accessibility: ADA compliance for doors, bathrooms, and access routes
• Structural: Engineered drawings stamped by licensed PE
• Electrical: NEC (National Electrical Code) compliance
• Mechanical: IMC (International Mechanical Code) compliance

Foundation & Installation

Proper foundation preparation ensures structural integrity and long-term performance of modular buildings.

Foundation Options

• Concrete Slab: Most permanent and stable foundation option
• Existing Floor: Install directly on concrete warehouse floors
• Raised Floor: Steel frame with removable floor panels for utilities
• Pier Foundation: Individual footings for uneven or soft ground
• Temporary Base: Leveling pads or timbers for relocatable structures

Installation Process

• Site Preparation: Survey, layout, and foundation work
• Panel Delivery: Modular components delivered to site
• Assembly: Professional installation typically 1-3 days
• Utilities Connection: Electrical, HVAC, data, and plumbing tie-ins
• Final Inspection: Local authority approval and occupancy permit

Expansion & Reconfiguration

Modular construction enables easy expansion and reconfiguration as business needs change over time.

Expansion Methods

• Add Sections: Extend existing buildings with matching panels
• Multi-Story: Stack units vertically when ground space is limited
• Relocate: Disassemble and move to new locations if needed
• Reconfigure: Move interior walls to create different layouts
• Upgrade: Replace panels or systems without complete reconstruction

Specialty Applications

Modular buildings serve unique facility requirements beyond standard office applications.

Special Purpose Buildings

• Guard Houses: Security stations with visibility and communications
• Maintenance Shops: Secure areas for tool storage and equipment repair
• Quality Labs: Temperature-controlled testing and inspection areas
• Training Centers: Classroom space with AV equipment and furniture
• Server Rooms: Climate-controlled IT infrastructure spaces
• Lunchrooms: Break areas with kitchenettes and seating

Acoustics & Sound Control

Effective sound attenuation creates comfortable working environments within noisy industrial facilities.

Sound Control Methods

• Insulation: High-density fiberglass batts in wall and ceiling cavities
• Mass-Loaded Vinyl: Additional sound barriers in wall assemblies
• Sealed Construction: Gaskets and sealants prevent sound leaks
• Acoustic Ceiling: Sound-absorbing ceiling tiles reduce reverberation
• Double Glazing: Insulated glass reduces window transmission

Maintenance & Longevity

Quality modular buildings provide decades of reliable service with minimal maintenance requirements.

Maintenance Considerations

• Panel Care: Periodic cleaning maintains appearance and hygiene
• HVAC Service: Regular filter changes and seasonal maintenance
• Seal Inspection: Check caulking and gaskets annually
• Electrical Testing: Periodic inspection of circuits and connections
• Expected Life: 20-30+ years with proper maintenance

Relocation Services

Modular buildings can be disassembled, transported, and reinstalled at new locations when facilities relocate or expand.

Relocation Process

• Documentation: Photo and label all components during disassembly
• Careful Removal: Protect panels and components during takedown
• Transportation: Secure transport to new site location
• Reinstallation: Professional reassembly at new location
• Upgrades: Opportunity to update systems during relocation

Why Choose EHS for Modular Buildings?

With over 30 years of industrial facility experience, we provide complete modular building solutions from design and engineering through permitting, installation, and utility connections. Our systems meet building codes while delivering the speed and cost advantages of modular construction.

Complete modular building solutions include: space planning and layout design, engineering and stamped drawings, permit application support, site preparation coordination, professional installation, electrical and HVAC connections, final inspection support, and ongoing service for expansions or relocations.

In-Plant Office Configurations

In-plant offices provide climate-controlled workspace within industrial facilities without the extended timelines and disruption of conventional construction. Modern systems offer wall configurations from simple 2-wall partial enclosures to fully enclosed 4-wall structures.

2-Wall Office Systems

• Configuration: Two walls with existing building walls forming other sides
• Applications: Corner offices, end-of-aisle supervision stations
• Cost Advantage: 30-40% less than 3 or 4-wall configurations
• Installation Time: Typically 1-2 days for standard sizes
• Ideal For: Budget-conscious projects with suitable building walls

3-Wall Office Systems

• Configuration: Three modular walls with one building wall
• Applications: Perimeter offices along warehouse walls
• Visibility: Window wall facing production floor for supervision
• Flexibility: Can be relocated if building layout changes
• HVAC Options: Shared building HVAC or dedicated units

4-Wall Complete Enclosures

• Configuration: Fully independent structure, all modular walls
• Applications: Mid-floor offices, free-standing buildings
• Maximum Flexibility: Completely relocatable to any location
• Climate Control: Independent HVAC systems, complete insulation
• Acoustics: Full sound isolation from production noise

Quick-Ship Office Programs

Industry-leading quick-ship programs deliver pre-configured offices in as little as 5 business days from order. These programs stock popular sizes and configurations for immediate deployment when facility needs demand rapid solutions.

Quick-Ship Features

• Delivery Timeline: 5-10 business days for stock configurations
• Standard Sizes: 8×8, 8×10, 8×12, 10×10, 10×12 most common
• Pre-Wired Electrical: Factory-installed wiring and fixtures, ready to connect
• Standard Finishes: Vinyl-covered gypsum in neutral colors
• Knockdown Design: Ships disassembled, reduces freight costs significantly
• Professional Installation: Typically completed in 1-2 days on site

Demountable & Relocatable Wall Systems

Modern modular buildings feature demountable walls that can be disassembled, moved, and reinstalled without damage. This relocatability protects your investment as facility needs evolve over time.

Relocation Benefits

• Asset Protection: Move buildings to new facilities during relocations
• Layout Flexibility: Reconfigure as production flows change
• Reusable Components: Panels, doors, windows reused indefinitely
• Tax Advantages: May qualify as personal property vs real property
• Minimal Waste: No demolition debris, environmentally responsible

Demountable Construction Methods

• Panel-to-Panel Connections: Mechanical fasteners, no welding required
• Reversible Assembly: Joints designed for multiple assembly cycles
• Labeled Components: System tracking for reassembly accuracy
• Standardized Hardware: Common tools, no specialized equipment needed

Sound Control & Acoustic Performance

Industrial environments generate significant noise that can impact office worker productivity and comfort. Modern modular buildings incorporate Sound Transmission Class (STC) rated panels to create quiet work environments within noisy facilities.

STC-Rated Sound Panels

• STC 35-40: Standard panels, suitable for moderate noise environments
• STC 45-50: Enhanced panels for manufacturing facilities with machinery
• STC 55+: High-performance panels for extremely loud environments
• Testing Standards: ASTM E90 laboratory testing validates performance
• Panel Construction: High-density insulation, mass-loaded vinyl barriers

Complete Acoustic Solutions

• Acoustic Doors: Solid core doors with gasketed perimeter seals
• Window Seals: Dual-pane thermalpane glass reduces sound transmission
• Ceiling Systems: Acoustic tile ceilings absorb interior reverberation
• Penetration Sealing: Electrical and HVAC penetrations properly sealed
• Floor Isolation: Resilient floor underlayment reduces impact noise

Fire-Rated Panel Systems

Many facilities require fire-rated construction to meet building codes, insurance requirements, or to protect valuable equipment and data. Fire-rated modular panels provide UL-certified fire resistance while maintaining the speed advantages of modular construction.

Fire Rating Options

• 1-Hour Fire Rating: Most common for general office applications
• 2-Hour Fire Rating: Required for some hazardous material storage
• UL Certification: Factory-tested assemblies with documented performance
• Panel Construction: Multiple layers of fire-rated gypsum board
• Protected Penetrations: Fire-rated electrical boxes and HVAC dampers

Code Compliance

• Building Codes: Engineered to meet IBC requirements
• Fire Marshals: UL listings simplify approval process
• Insurance Requirements: Fire-rated construction may reduce premiums
• Life Safety: Provides occupant protection and egress time

Factory-Wired Electrical Systems

Pre-wired electrical systems installed at the factory significantly reduce on-site installation time and ensure consistent, code-compliant wiring throughout the building.

Factory Wiring Advantages

• Quality Control: Wiring installed in controlled factory environment
• Faster Installation: Eliminate 2-3 days of on-site electrical work
• Code Compliance: Factory electricians ensure NEC compliance
• Tested Systems: All circuits tested before shipment
• Reduced Site Labor: Only final connections required on site

Electrical System Features

• Pre-Wired Panels: Wall panels arrive with wiring and boxes installed
• Lighting Circuits: LED fixtures pre-wired, ready to connect
• Receptacle Circuits: Duplex outlets spaced per code requirements
• Dedicated Circuits: HVAC, computer equipment, special loads
• Panel Schedules: Clearly labeled circuits for easy troubleshooting
• Expansion Capacity: Panels sized with spare capacity for future needs

Guard Booths & Security Stations

Modular guard booths provide secure, climate-controlled stations for security personnel at facility entrances, parking lots, and perimeter checkpoints. Quick installation minimizes security gaps during construction.

Guard Booth Applications

• Entrance Control: Visitor check-in and vehicle screening
• Parking Facilities: Attendant stations for parking management
• Perimeter Security: Remote monitoring posts at facility boundaries
• Loading Docks: Shipping and receiving check-in stations
• Campus Security: Mobile patrol bases for large facilities

Guard Booth Features

• Visibility: Large windows provide 180-270 degree sight lines
• Transaction Windows: Pass-through windows with locks and intercoms
• Compact Footprints: 4×4 to 6×8 sizes common, minimal space requirements
• HVAC Systems: Climate control for year-round comfort
• Electrical: Lighting, power for computers and security equipment
• Communications: Pre-wired for phones, intercoms, access control

Equipment Enclosures & Mechanical Rooms

Modular equipment enclosures protect valuable machinery, electrical gear, and mechanical systems while providing safe, organized access for maintenance personnel.

Equipment Enclosure Types

• Electrical Rooms: Transformers, switchgear, UPS systems
• Mechanical Rooms: Compressors, pumps, HVAC equipment
• Server Rooms: Climate-controlled IT infrastructure housing
• Generator Enclosures: Weather protection for backup power systems
• Compressor Rooms: Sound-isolated compressed air systems

Enclosure Features

• Ventilation: Louvers, exhaust fans, or dedicated HVAC for heat removal
• Access Doors: Wide doors for equipment installation and removal
• Sound Attenuation: Acoustic panels reduce equipment noise
• Fire Protection: Fire-rated construction and suppression systems
• Lighting: High-output fixtures for maintenance visibility
• Floor Strength: Reinforced floors for heavy equipment loads

Less Mess Compared to Conventional Construction

Modular construction dramatically reduces the disruption, mess, and safety hazards associated with traditional stick-built construction within operating facilities.

Conventional Construction Challenges

• Dust Generation: Drywall cutting, sanding creates facility-wide dust
• Noise Disruption: Power tools, hammering disturbs production
• Safety Hazards: Open construction areas, tools, materials create risks
• Extended Timelines: Sequential trades, weather delays, inspections
• Production Impact: May require partial facility shutdowns

Modular Construction Advantages

• Minimal Dust: Panels pre-finished, no on-site cutting or sanding
• Quiet Installation: Simple bolt-together assembly, minimal noise
• Controlled Area: Small footprint contained during installation
• Fast Installation: 1-3 days typical vs 2-6 weeks conventional
• Continued Operations: Facility operates normally during installation
• Clean Site: No drywall mud, paint overspray, or construction debris

Installation Process Comparison

Conventional Construction: Foundation work, framing, electrical rough-in, plumbing, insulation, drywall hanging, drywall finishing (2-3 coats), painting (primer + finish), trim installation, final electrical, final HVAC, flooring, cleanup. Timeline: 4-8 weeks with multiple trade contractors.

Modular Construction: Site preparation, panel delivery, panel assembly and connection, electrical connection, HVAC connection, final inspection. Timeline: 1-3 days with single installation crew, facility operational immediately upon completion.

Lunch Rooms & Break Room Facilities

Employee break rooms and lunch facilities built with modular construction provide comfortable amenity spaces that boost morale and meet OSHA requirements for employee facilities.

Break Room Features

• Kitchenette Areas: Sinks, refrigerators, microwaves, coffee stations
• Seating Capacity: Tables and seating for shift populations
• Vending Areas: Dedicated space for snack and beverage machines
• Restroom Access: Adjacent or integrated restroom facilities
• ADA Compliance: Accessible counters, clearances, and fixtures

Compliance & Standards

• OSHA Requirements: Adequate seating and sanitary facilities
• Plumbing Codes: Proper venting, drainage, and water supply
• Food Service: Cleanable surfaces, hand washing facilities
• Electrical Capacity: Sufficient power for appliances and vending

Frequently Paired Solutions

Modular in-plant offices and structures create functional space within your facility:

Industries We Serve