With a comprehensive range of services and technical proficiencies, RTP offers customized solutions to meet the unique needs of our clients. RTP experts ensure that all of our clients receive optimized and efficient solutions for every single project.


Solid Foundations, Superior Engineering

With vast experience in foundation design across various industries, RTP has experience in engineering structures of all types and sizes. Our design capabilities range from basic footings to intricate foundations for both dynamic and static loads. To ensure superior quality and safety, we use finite element analysis in the design process, particularly for foundations on challenging site conditions characterized by poor soils and/or low to high seismic accelerations.


  • Staad/Pro used for Foundation Analysis and Design
  • Analysis (based on ultimate concrete strength)
  • Finite Element used for complex foundation problems for regions of low to high seismic accelerations
  • Vibration Analysis
  • Settlement analysis using Finite Element
  • Meet ACI, IBC & local building Code Requirements
  • Geotechnical Specifications
  • Railroads, Roadways and Parking Areas
  • Roadway Design and Underground Utility Protection for heavy vehicles
  • Storm, Sanitary and Sewer Systems
  • Piles and Soil Bearing
  • Building Footings including large and tall buildings
  • Caissons for transmission towers and poles
  • Stacks
  • Equipment at grade and elevated
  • Large Rotating Equipment
  • Water Treatment Facilities and Cooling Towers
  • Deep and Large Underground Basements, Tunnels and Pits


Excellence Without Boundaries: Your Global Partner for Structural Solutions

RTP’s extensive project portfolio spans diverse industries, featuring structures of varying types and sizes, both in the United States and internationally. Our structural design adheres to mandated codes and regulations for different project locations, and utilizes the latest "STAAD.Pro" software for optimal engineering. With vast experience in areas ranging from low to high seismic accelerations, we're equipped to handle the structural needs of major industries.


  • Structural Design prepared by using “STAAD/PRO” software using either the "Allowable Stress Design" or “Load Resistance Factor Design” methods as applicable
  • Vibration Analysis for Dynamic Loadings
  • Rigid Frame and/or Braced System Structure Design
  • Designs meet AISC, IBC and Local Building Code Requirements
  • “Minimum Design Loads for Buildings and Other Structures” by American Society of Civil Engineers is used to determine wind and earthquake loads
  • Multi-Story structures
  • Multiple Bay Buildings over 300 feet high and up to 400 ton overhead crane loads
  • Wind Analysis for up to 150 miles per hour basic wind velocity in accordance with ASCE-7
  • Mill Buildings, designed in accordance with AIST Standard 13 with EOT Cranes up to 450 Ton
  • Crane Runways and Crane Girders Analysis and Design
  • Storage Bins and Silos
  • Conveyors and Material Handling Systems
  • Air and Fume Exhaust Systems with duct work up to 20 feet in diameter
  • Control Rooms, Pulpits and Miscellaneous Equipment Rooms
  • Platforms, Stairs and Walkways
  • Transmission Towers, Poles and Associated Structures
  • Steam Lines, Pipe Bridges and other Piping Systems


Empowering Industries with Efficient Electrical Solutions

RTP has deep roots in the electrical industry and continues to maintain a strong presence in the field. RTP electrical engineers specialize in power and control aspects of projects within a diverse range of industries with a comprehensive menu of services.


  • Medium and High Voltage
  • Outdoor Substation Design (34.5kV - 500kV)
  • New and Existing Facilities
  • Short Circuit Study
  • Protective Device Coordination Study
  • Load Flow Analysis
  • Arc Flash Hazard Analysis and Mitigation
  • ETAP or SKM
  • Power to and within Site
  • Fiber-Optic LAN systems
  • IT & Computer Systems Level I, II, III, IV
  • Building & Equipment Grounding
  • Pole Line
  • SAG & Tension Calculations
  • Building Lighting, Indoor and Outdoor
  • Lightning Protection
  • Equipment Specifications
  • Critical Equipment Emergency Generator and UPS Systems
  • Embedded Conduit and Manhole Systems
  • Cable Tray Design
  • Exposed Conduit Design
  • Wireless Systems


Efficient Piping and Mechanical Solutions for Every Industry

RTP offers system design services for a diverse range of industries including Aluminum, Chemical, Glass, Manufacturing, Mining, Steel, and Power (Fossil, Cogen, and Hydro). We utilize Caesar II and Bentley AutoPipe software to calculate and analyze piping systems of all sizes. With extensive experience in carbon steel, stainless steel, titanium, hastelloy, glass, plastic and rubber lined, fiberglass reinforced, HDPE, PP, PVC, and CPVC materials, RTP’s services cover both small and large projects, including complete facility utility distribution systems. Trust RTP for dynamic piping solutions tailored to your industry's unique needs.


  • Fluid Flow Calculations
  • Heat Transfer Calculations
  • Pipe Stress Calculations in accordance with:
    • B31.1 Power Piping
    • B31.3 Chemical Plant and Petroleum Refinery Piping
    • B31.8 Gas Transmission and Distribution Systems
    • B31.9 Building Services Piping
  • Process Flow Diagrams
  • Mass Balance Diagrams
  • Pumps
  • Cooling Towers
  • Chillers
  • Boilers
  • Heat Exchangers
  • Intake Screens
  • Strainers
  • Filters
  • Wet Scrubbers
  • Coalescing Plate Separators
  • Solids, Liquids and Gas Separation Equipment Design and Specification
  • Clarifiers
  • Tanks and Pressure Vessels
  • Piping System Troubleshooting and Remediation
  • Specification of Piping Materials
  • Specification of Fabrication and Installation Practices
  • Calculation and Specification of Insulation Types
  • Specification of In Line Piping Components
  • Tank and Vessel Design in accordance with ASME Section VIII and API Standards
  • Pipe Support Design and Specification
  • Fume Exhaust Systems
  • Fire Protection Systems
  • Pneumatic Conveying Systems
  • Water Treatment Facilities


Tailored Control Systems and Expert Field Support

RTP offers a range of Automation and Instrumentation design services, including designing control systems utilizing different Automation and Instrumentation vendors, in-house programming and design, and on-site field check-out and start-up services.


  • Instrumentation Specifications
  • P&I Diagrams
  • Mounting Details
  • Data Sheets
  • Loop Diagrams
  • Functional Descriptions
  • Elementary Diagrams
  • I/O Diagrams
  • Panel/Operator Station Layouts
  • Wiring Diagrams
  • Bills of Material
  • Equipment Specifications
  • Installation Specifications
  • Installation Drawings
  • Operation & Maintenance Manuals
  • Operation & Maintenance Training
  • Software Development & Programming Coordination
  • Start-up Services
  • Allen Bradley
  • G.E.
  • Modicon
  • Siemens
  • ABB
  • SEL
  • Wonderware (Aveva)


Powering Systems With Precision and Efficiency

RTP offers comprehensive heating, ventilation, and air-conditioning (HVAC) engineering and design services for both industrial and commercial industries. We focus on complete building systems to heating and air-conditioning of specific control rooms, electrical rooms and laboratories. Our team ensures the highest levels of personnel safety, temperature and humidity control, thermal comfort, and indoor air quality, while meeting applicable ASHRAE Codes for ventilation and energy efficiency.


  • Cooling Towers
  • Chillers – Air Cooled, Centrifugal, Steam
  • Boilers – Hot Water, Steam (Packaged and Unitary)
  • Air Handling Units – Single Zone, Multi-Zone, Constant Volume, VAV
  • Unitary Equipment – Fan Coils, Split Systems, Mini-Splits
  • Laboratory Fume Hoods, Snorkel Exhaust, Glove Box, Gas Cabinet
  • VAV Boxes, Fan powered Boxes, Supply/Return Diffusers, Registers and Grilles
  • Hydronic System Pumps, Expansion Tanks, Air Separators
  • Hydronic Piping Systems – Hot/Chilled Water, Steam and Condensate
  • Laboratories (Metallurgical, Chemical and Research)
  • Energy Conservation/Recovery and Sustainability
  • Mill Buildings, Warehouses, Maintenance Facilities
  • Electrical Rooms, Transformer Rooms, Server Rooms
  • Control Rooms
  • Crane Pulpits
  • Administration Buildings
  • Shower/Locker Room Facilities
  • Diesel Generator Rooms
  • Hydraulic Rooms
  • Data Centers
  • Clean Rooms


Engineered To Elevate Industrial and Construction Processes

Material handling system engineering services to AISC, AISE and CEMA standards for industrial and construction processes is an RTP specialty. Processes (flow diagrams outlining flow paths, capacities, equipment, screening classifications, storage capacities, monitoring instrumentation, conveyor speeds) and equipment specification (rotary kilns, dryers, mixers, coolers, belt conveyors, bucket elevators, screeners, crushers, surge bins, silos, magnetic separators, instrumentation, rotary locks, articulating belt conveyors, railcar loaders, screw conveyors, vibrating feeders) combine with RTP expertise for best-practice material handling.


  • Roofing Granules
  • Baghouse Dust
  • Aluminum Chips
  • Aluminum
  • Carbon Block
  • Cast Iron Scrap
  • Glass Cullet
  • Coal
  • Taconite
  • Hot Metal Slabs and Billets
  • Ash
  • Cement
  • Alumina
  • Pipe Material Flow
  • Bar and Rod Material Flow
  • Plastic Pellets
  • And More

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R.T. Patterson Company is part of the Allied Resources Group (ARG). Our family of technical companies offer a collaborative environment, flexible work opportunities, and a family-centric culture.