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HVAC/R and Mechanical February 2, 2024

Impact of high-global warming potential (GWP) refrigerants for engineers, building owners

John Keating, the vice president and general manager for stationary refrigerants at Honeywell, discusses the impact of high-global...

Building Automation and Controls January 31, 2024

What’s new with BACnet? Watch this video to learn more

The BACnet protocol, used in building automation, is constantly updating and shifting to meet the needs of building automation and...

HVAC/R and Mechanical January 31, 2024

HVAC industry trends on display at AHR Expo

Lennox Commercial highlighted their Enlight dual fuel heat pump and their Model L Unit at the 2024 AHR Expo. Anna Steingruber, ass...

Video December 26, 2023

Video: How to design hospital electrical systems

Hospital electrical system design must accommodate every area including lighting, utilization devices and the entire electrical infrastructure.

By Consulting-Specifying Engineer
Video November 15, 2023

Video: Commissioning of food service spaces overview challenges and lessons learned

The Commissioning Process offers opportunities to overcome challenges presented in unique spaces and help us deliver buildings with safe and functional food service facilities.

By CxEnergy and the AABC Commissioning Group (ACG)
Video November 1, 2023

Video: Enclosure commissioning maximizing value

Building Enclosure Commissioning (BECx) and performance testing are required and implemented on more projects than ever before.

By CxEnergy and the AABC Commissioning Group (ACG)
Video October 18, 2023

Video: Electric rate structures – importance of analysis

This session will examine some of the rate structures commonly used by utility companies and various incentives with the use of submetering the value of BECx.

By CxEnergy and the AABC Commissioning Group (ACG)
Video October 11, 2023

Video: Environmental, social and corporate governance for independent third-party Cx providers

This introductory presentation seeks to provide a basic understanding of ESG concepts and insights into the ramifications of changing procurement parameters affecting independent third-party commissioning provider (CxP) and energy management service operations. Discussion of ESG business opportunities for CxPs and EMPs is also included.

By Jim Magee, CxA, EMP
Video September 27, 2023

Video: Case study – renovation of ASHRAE headquarters building

This presentation will show how a 1970’s era building was renovated into a net-zero building. This presentation goes through the process from the development of the owner project requirements through the selection of the design/construction team and finishing with the final product.

By CxEnergy and the AABC Commissioning Group (ACG)
Video September 20, 2023

Video: Sustainability, decarbonization and electrification: Buzzwords or the future of the building performance industry?

Sustainability, decarbonization and electrification are appearing with increasing frequency in general and industry media. What do these terms mean in the context of our industry, and why are they important?

By CxEnergy and the AABC Commissioning Group (ACG)
Video September 13, 2023

Video: Test, adjust and balance; Lessons learned for engineers, Cx and energy providers

There are project design and construction related challenges that are encountered during the testing, adjusting, and balancing (TAB) process. This presentation offers solutions and ideas to help overcome challenges that will help optimize system performance and prove that design intent has been met.

By CxEnergy and the AABC Commissioning Group (ACG)
Video September 6, 2023

Video: ACG building systems commissioning guideline spotlight: electrical distribution equipment terminology

Where the construction industry appears vague or lacking in guidance for defining terminology, this presentation intends to provide several means of clarifying one such term: electrical power distribution, or electrical distribution equipment.

By CxEnergy and the AABC Commissioning Group (ACG)
Video August 29, 2023

Sponsored content: Source isolation switch use cases

Electrical engineers need to know where and how a source isolation switch (SIS) might be deployed as well as the concept of “battery first” to optimize sustainability.

By Consulting-Specifying Engineer
Video August 22, 2023

Sponsored content: Establishing UL 3008

Most electrical engineers know about UL 1008: Transfer Switch Equipment, and they need to learn about UL 3008: Automatic Interconnection Switches for Emergency Systems.

By Consulting-Specifying Engineer
Video August 15, 2023

Sponsored content: Isolation versus transfer

Understand what is different in a battery energy storage system (BESS) application versus a generator application.

By Consulting-Specifying Engineer
Video August 8, 2023

Sponsored content: BESS for resiliency

A battery energy storage system (BESS) is often seen as an emergency source, as are generators. But what are the pros and cons? See video.

By Consulting-Specifying Engineer
Video August 1, 2023

Sponsored content: Here come the batteries

Increased demand for renewable energy is driving the adoption of battery and photovoltaic design requests.

By Consulting-Specifying Engineer
Video July 25, 2023

Sponsored content: Evolution of the NAM electrical infrastructure

Electrical engineers are focusing on cabling and wiring, generators and transfer switches. What else is on the horizon? See video.

By Consulting-Specifying Engineer
Video June 28, 2023

Video: ACG Building Systems Commissioning Guideline Preview

This presentation offers professional insights and strategies on provider topics, from system specific Cx deliverables, to managing teams and directing resources, to marketing and preparing requests for services.

By CxEnergy and the AABC Commissioning Group (ACG)
Video June 21, 2023

Video: Integrating Energy Modeling and Building Commissioning with an Energy Management Information System to Optimize Building System Operations

This presentation explains how building commissioning (Cx) services validate, document, and ensure compliance with design intent for MEP systems.

By CxEnergy and the AABC Commissioning Group (ACG)
Video June 14, 2023

Video: Go Beyond Traditional Cx Processes: Ensuring Mission-Critical Facilities are Operationally Ready

This presentation explains how unplanned outages or unprepared systems and staff can have serious consequences for ongoing operations.

By CxEnergy and the AABC Commissioning Group (ACG)
Video June 7, 2023

Video: $1.2T Infrastructure Investment & Jobs Act (IIJA) – Opportunities for Commissioning Agents 2022-2026

This presentation examines the role commissioning agents will play as the dollars start to roll out in FY22 and beyond?

By CxEnergy and the AABC Commissioning Group (ACG)
Video May 31, 2023

Video: Case Studies in Improved Hydronic System Performance Via Effective Air & Dirt Elimination

This presentation will address how air entrained in a hydronic system fluid negatively affects the start-up, testing and balancing (TAB), commissioning (Cx) and more.

By CxEnergy and the AABC Commissioning Group (ACG)
Video May 24, 2023

Video: Tomorrows commissioning, beyond MEP

This presentation focuses on the secondary systems and evolving practices such as Building Enclosure Commissioning (BECx) and the desire for buildings to have healthy air.

By CxEnergy and the AABC Commissioning Group (ACG)
Video May 17, 2023

Video: Commissioning of Federal Buildings

A discussion on Federal building commissioning, high-performance building, guiding principles, approaches, documentation, lessons and more.

By CxEnergy and the AABC Commissioning Group (ACG)
Video May 10, 2023

Video: Case Study: Testing, Adjusting, and Balancing a Hyperscale Data Center

This presentation will provide a case study of the testing, adjusting and balancing process at a hyperscale data center project in Texas.

By CxEnergy and the AABC Commissioning Group (ACG)
Video May 4, 2023

Video: Light it Up: Lighting Controls Continue to Adapt and Improve

This presentation discusses the evolution of lighting controls, the current lighting control commissioning process, conflicting strategies, and common mistakes with this presentation.

By CxEnergy and the AABC Commissioning Group (ACG)
Video April 26, 2023

Video: Don’t Forget the Fuel! 10 Things to Look for when Commissioning Your Generator Fuel Systems

This presentation will discuss some of the most common issues (and best practices) seen during commissioning of emergency power systems.

By CxEnergy and the AABC Commissioning Group (ACG)
Video April 19, 2023

Video: Benefits and cost justification of cloud-based energy analytics

This presentation delivers a cross-cutting analysis of costs and benefits of energy analytic platforms spanning various construction vintages, mechanical systems, building end-uses, occupation patterns and technology providers.

By CxEnergy and the AABC Commissioning Group (ACG)
Video April 12, 2023

Video: More Commissioning, Less Wasted Time: Trends in Software Integration & Automation

This session highlights four trends that influencing the future of commissioning work and what that means in the short-and long-term.

By CxEnergy and the AABC Commissioning Group (ACG)
Video April 5, 2023

Video: Fundamentals of Test, Adjust, & Balance for Engineers, Cx & Energy Providers

This practical, information-packed session explains many of the key test and balance challenges—from practical system design considerations, to the TAB Process and more.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 29, 2023

Video: Building Enclosure Fundamentals: Integrating Proper Building Enclosure Into the Design Process

This presentation highlights a process where the building enclosure commissioning authority or consultant can be integrated into the design process.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 23, 2023

Winner of $100,000 sweepstakes named

Atkore Inc. a leading global provider of electrical, safety and infrastructure solutions, announced the winner of its $100,000 Win the Truck of Your Dreams sweepstakes. See video.

By Atkore
Video March 22, 2023

Video: Better Buildings for a More Sustainable Future

This session will look at commissioning and energy management through a sustainable lens, guiding participants through the different requirements for commissioning within various rating systems and finding a balance to integrating commissioning into all projects and show GHG reductions through reported energy savings.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 15, 2023

Video: From Commitment to Completion – Promises Made/Promises Kept an energy case study

This presentation examines a single-owner office building approximately 250,000 sq ft showing the project’s progress from the initial energy audit and its findings to today’s energy footprint.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 8, 2023

Video: Looking to the Future: Embracing Total Cost of Ownership & Avoiding Unintended Consequences of Value Engineering

This presentation will discuss value engineering concepts and reality, TCO approach and examples of both successful integration of TCO to the project decisions and the unintended consequences of value engineering without a look to the future.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 1, 2023

Video: Efficiency, Sustainability, Resiliency and Security – Redefining Auditing

This session will examine how the scope of audits, condition assessments and strategic planning has expanded beyond evaluations for energy efficiency and equipment life.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 22, 2023

Video: Comparison: NETA Standard for Electrical Commissioning and ACG Commissioning Guideline

This study is intended to contrast similarities and differences with guidelines and standards for electrical commissioning practices.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 15, 2023

Video: What to Expect When You’re Expecting Fault Detection & Diagnostics (FDD)

This sessions explains how fault detection & diagnostics (FDD) analytical software is growing in popularity as a tool to support monitoring-based commissioning.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 13, 2023

Sponsored video: Lennox discusses IAQ at AHR Expo

Tate Byers from Lennox Commercial touched on several HVAC topics at the annual AHR Expo.

By Amara Rozgus
Video February 10, 2023

Sponsored video: Cleaver-Brooks discusses boilers

Catie VanWormer from Cleaver-Brooks looks at boiler designs and trends

By Amara Rozgus
Video February 8, 2023

Video: Real-Time IAQ Data For Managing Key HVAC System Infrastructures

This session examines practical case studies that demonstrate the day-to-day utility of leveraging real-time IAQ data.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 1, 2023

Video: Staircase Pressurization Systems: How to Manage Risk, Commission and Hand Over

This presentation explains the design and construction Cx-related issues, plus review the framework for commissioning and handover.

By CxEnergy and the AABC Commissioning Group (ACG)
Video January 25, 2023

Video: Building Readiness and Reopening: Guidance and Case Studies

This session focuses on highlighting the core recommendations of the ASHRAE’s Epidemic Task Force (ETF) and move into an overview of the information in the building reopening guidance with regard to systems evaluation and mitigation strategies.

By CxEnergy and the AABC Commissioning Group (ACG)
Video January 18, 2023

Video: Commissioning A Prison Complex: Overview, Technology, and Lessons Learned

This presentation will provide an overview of commissioning a prison complex project from design through construction, warranty, and into occupancy.

By CxEnergy and the AABC Commissioning Group (ACG)
Video December 21, 2022

Video: Sample No More – How Automated Functional Testing Enables 100% Testing

This session will explore how commissioning providers use automated functional testing to improve project outcomes for both the owner and themselves.

By CxEnergy and the AABC Commissioning Group (ACG)
Video December 15, 2022

Sponsored video: Q Range offers European market broad generator options

Cummins Power Generation’s Q Range of generators expands the options for many applications in the European market

By Consulting-Specifying Engineer
Video December 14, 2022

Video: Whirlwind Recovery – Commissioning an Industrial Campus Rebuild Post-Tornado

As part of the rebuild process, Vermeer brought IMEG onto the team to provide commissioning services for the construction of a 500,000 sq. ft. Plant 7, 35,000 sq. ft. Eco Center, and a 4,500-ton campus chilled water plant.

By CxEnergy and the AABC Commissioning Group (ACG)
Video December 7, 2022

Video: Reducing Energy 10% to 40% Utilizing Existing Building Commissioning Without Capital Investments

Engaging the services of a Professional Engineering firm to assist in achieving some level of energy reduction in their facilities is the first step to a sustainable energy plan.

By CxEnergy and the AABC Commissioning Group (ACG)
Video November 30, 2022

Video: Optimizing Domestic Hot Water Systems for Peak Performance

The key to occupant safety, reduced energy costs, and maximized water use is ensuring hot water systems are operating at peak performance.

By CxEnergy and the AABC Commissioning Group (ACG)
Video November 23, 2022

Video: Overcoming Challenges with Core and Shell Commissioning

The core building is designed to accommodate tenants of a perceived type. Any changes to the type or the amount of occupants drastically affects performance.

By CxEnergy and the AABC Commissioning Group (ACG)
Video November 16, 2022

Video: Using simulation technologies to craft material handling in a facility

At IPS, Stephen Lane is tasked with working directly with clients and internally with the team to develop simulation models to support sites worldwide

By Stephen Lane
Video October 20, 2022

Video: Controls Contractor: TAB and Cx Friend or Foe?

This seminar looks at a project from a control contractor’s perspective to highlight challenges and why they are often the critical path for the commissioning process.

By CxEnergy and the AABC Commissioning Group (ACG)
Video September 30, 2022

Sponsored video: Switchgear or switchboards?

Which electrical option is more appropriate?

By Consulting-Specifying Engineer
Video August 23, 2022

Sponsored video: PIC built for testing microgrid power

The Cummins microgrid lab was built for the configuration, testing and validation of microgrid power systems

By Amara Rozgus
Video July 12, 2022

Sponsored video: Key market drivers for the power generation business

Dr. Scott Strudwick with Cummins Inc. looks ahead at key market drivers, plus insights on how new technologies will change the power generation business

By Consulting-Specifying Engineer
Video June 30, 2022

Video: How do rural hospitals differ from urban ones?

Jose Torres from RMF Engineering looks at how engineers designing rural hospitals must get full buy-in from the maintenance staff when specifying new equipment or upgrading older systems

By Consulting-Specifying Engineer
Video June 24, 2022

Sponsored video: What does the future of generator testing look like?

Gary Johansen, VP of Engineering with Cummins, looks at the past 10 years of genset testing, and where we’ll be in the future

By Consulting-Specifying Engineer
Video June 15, 2022

Video: HVAC trends in office buildings

Dewberry’s Kevin McNiff provides insights on office buildings, specifically their HVAC systems

By Consulting-Specifying Engineer
Video June 1, 2022

Video: Stan Everett looks at the future of office buildings

Stan Everett, managing principal of Salas O’Brien’s offices in Georgia, Florida and North Carolina, looks at how new technologies are changing the way we think about office buildings

By Consulting-Specifying Engineer
Video May 3, 2022

Sponsored video: Trends in cooling technologies

Ankush Kumar, president of SPX Global Cooling, provides details on what to expect in HVAC going forward

By Consulting-Specifying Engineer
Video April 29, 2022

Video: Electrification, decarbonization in hospitals

Two experts from Henderson Engineers explain how hospitals are setting trends in building electrification

By Consulting-Specifying Engineer
Video April 18, 2022

Video: How has the engineering of health care buildings changed?

Darren Harvey of Smith Seckman Reid provides insight on how the health care industry has shifted since COVID-19 began

By Consulting-Specifying Engineer
Video April 14, 2022

Sponsored video: Integrating building electrical systems

Wissam Balshe, Cummins, provides an overview of new technologies in the electrical engineering industry.

By Consulting-Specifying Engineer
Video April 8, 2022

Video: Hospital electrical system trends

Danna Jensen from Certus Consulting Engineers talks about how global issues affect the design of hospital electrical systems

By Consulting-Specifying Engineer
Video March 11, 2022

Video: What am I looking at?

Lauren Graham explains what you are looking at when you see the different parts of your chilled water system.

By Southland Industries
Video March 9, 2022

Video: Trends in college, university HVAC systems with John Fleming

Decarbonization and resiliency are core topics for Dewberry’s John Fleming

By Consulting-Specifying Engineer
Video March 1, 2022

Video: College and university trends with Jennifer Luce

Technology is leading the way on college and university campuses

By Consulting-Specifying Engineer
Video February 17, 2022

What is machine learning?

Geospatial Analyst Colin Flynn explains machine learning

By Dewberry
Video February 8, 2022

Video: Chilled water system design with Henderson Engineers

Two mechanical system design experts take a holistic view of chillers and chilled water systems

By Amara Rozgus
Video February 7, 2022

Sponsored video: Trends in HVAC systems with Deana Fu

At the AHR Expo in Las Vegas, Deana Fu shared information about where the HVAC industry is headed

By Consulting-Specifying Engineer
Video February 1, 2022

Video: Trends in chillers and chilled water systems with Dennis Sczomak

Peter Basso Associates’ Dennis Sczomak takes a look at chillers and chilled water systems, and how integrating then with other HVAC elements plays a role

By Consulting-Specifying Engineer
Video December 17, 2021

What is Revit?

CADD Technician Isaac Nazario Penaloza explains Revit in about 90 seconds.

By Dewberry
Video December 8, 2021

Video: Designing smart buildings with Aaron Szalaj

In this conversation with Aaron Szalaj from Stanley Consultants, hear how designers can help their clients select the most appropriate smart building technologies

By Consulting-Specifying Engineer
Video December 1, 2021

Video: Roger Chang discusses government buildings

DLR Group’s Roger Chang talks about a host of topics as they relate to government buildings

By Amara Rozgus
Video November 15, 2021

Video: Telecom and technology insights with Matt Flanders

Affiliated Engineers’ Matt Flanders discusses technology and telecom is at relates to buildings

By Amara Rozgus
Video November 2, 2021

Video: The future of lighting design with Robert White

Illuminart’s Robert White shares insights about lighting design trends. See video.

By Amara Rozgus
Video September 29, 2021

Video: Trends and emerging technology in schools

Vassilis Skardis from Salas O’Brien provides an overview of what mechanical engineers should expect when working in schools

By Amara Rozgus
Video August 23, 2021

Video: CxA Workshop Live Q&A

This presentation focuses on challenges developing the ASHRAE building and how they were addressed by the design and commissioning team in order to meet the project goals.

By CxEnergy and the AABC Commissioning Group (ACG)
Video July 30, 2021

What is smoke testing?

Dewberry Project Manager Daniel Maas explains smoke testing in about 90 seconds.

By Dewberry
Video March 30, 2021

Video: CxEnergy Virtual: Effects of Temperature Change on Building Static Pressure Measurement

The author of an ASHRAE Journal article on the subject leads this session to explain the effects of cold weather (temperature change) on building static pressure measurement when the indoor and outdoor references at two different elevations.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 23, 2021

Video: Ensuring High Performing Pre-Engineered Metal Buildings Through Rigorous BECx

After building enclosure commissioning and air barrier testing, the buildings far exceeded minimum air barrier air leakage requirements, performing nearly at ASHRAE "Tight Building" Standard level- providing significant energy savings well into the future.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 16, 2021

Video: Make OPRs Great Again

This session discusses OPRs as important tools at a time of increased scrutiny (through local codes and rating systems) on performance related to resiliency, health, energy and carbon.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 9, 2021

Video: How Does Cybercrime Impact My Business?

Cybercrime has become prevalent because it’s easy and it’s really profitable, generating more than $1.5 trillion in 2018 alone.

By CxEnergy and the AABC Commissioning Group (ACG)
Video March 2, 2021

Video: ASHRAE 90.1 Cx Requirement Changes and Comparison to the Int’l Energy Efficiency Code

ASHRAE Standard 90.1–Energy Standard for Buildings Except Low-Rise Residential Buildings–was recently overhauled to clarify commissioning requirements for the 2019 edition. Learn more about potential changes.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 23, 2021

Video: Signal to Noise Ratio: Can You Hear (See) Me Now?

Today’s systems promise wireless communications, visual recognition and audio acuity sensed by a variety of triggers.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 16, 2021

Video: Multi-Phased Commissioning on an International Airport in Aruba

This course covers commissioning the expansion, the existing facility upgrade and associated BMS integration, through a blend of remote platform-based CX software, and traditional boots-on-the-ground means for Queen Beatrix International Airport in Aruba.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 9, 2021

Video: Healthcare Emergency Power Supply Systems Commissioning: Clearing Communication Hurdles

The coordination effort to achieve successful functional testing of a large hospital system can be overwhelming but it can be rewarding and valuable to clients if planned right.

By CxEnergy and the AABC Commissioning Group (ACG)
Video February 2, 2021

Video: Children’s Hospital of Atlanta Case Study – Highly Effective Commissioning

This commissioning effort on two new medical office buildings for Children’s Healthcare of Atlanta puts special focus on how additional effort did not sacrifice project profitability.

By CxEnergy and the AABC Commissioning Group (ACG)
Video January 26, 2021

Video: Succeed When You Leave: Strategies for Ensuring Persistence of Savings on Energy Projects

This course demonstrates how to develop a plan to defeat drift and ensure continuous savings in energy projects.

By CxEnergy and the AABC Commissioning Group (ACG)
Video January 19, 2021

Video: “Balancing Act”: Strategies and Lessons Learned from Companies that Do Both TAB and Commissioning

Learn ways to promote combined services as a discounted approach and efficiently provide total system balancing and a complete building commissioning process.

By CxEnergy and the AABC Commissioning Group (ACG)
Video January 12, 2021

Video: Commissioning for Reliability and Resiliency – Lessons Learned

The ability of critical systems to anticipate, resist, respond, adapt, and recover from a failure or disturbance – from natural disasters to intentional attacks to human error – can have huge consequences, and owners of critical facilities are adding formal resiliency plans to their risk management.

By CxEnergy and the AABC Commissioning Group (ACG)
Video July 23, 2020

Executive Brand Video Series — Learn How Thought Leaders at Eaton are Responding to COVID-19

Brian Brickhouse, President, Americas, Electrical Sector, Eaton, discusses how they are responding to the COVID-19 pandemic

By Brian Brickhouse
Video June 24, 2020

Executive Brand Video Series — Learn How Thought Leaders at ASCO are Responding to COVID-19

Bhavesh Patel, Vice President Global Marketing at ASCO, a Schneider Electric Company, discusses how they are responding to the COVID-19 pandemic

By Bhavesh Patel
Video May 28, 2020

COVID-19 state of the engineering industry: Part 3

Three things you need to know about the engineering industry right now

By Consulting-Specifying Engineer
Video May 19, 2020

Technology Applied: Chilled Beams in Hospitals

Chilled beam technology can improve the performance of energy intensive buildings such as hospitals. See video.

By Affiliated Engineers
Video May 13, 2020

Staying educated during COVID-19: State of the consulting engineering industry, part 2

Consulting engineers must attend continuing education sessions to stay involved, even during the COVID-19 pandemic, according to Amara Rozgus

By Consulting-Specifying Engineer
Video May 6, 2020

COVID-19 state of the consulting engineering industry: Part 1

Consulting engineers have been keeping busy during the COVID-19 pandemic, according to Amara Rozgus

By Consulting-Specifying Engineer
Video April 21, 2020

Video: Is an Audit & Retro-Cx an Rx for Energy Savings?

Learn how some energy management companies fail to achieve their goals, while others exceed them and what techniques they use to achieve success

By CxEnergy and the AABC Commissioning Group (ACG)

A Letter From The Editor

Consulting-Specifying Engineer is written and peer reviewed by engineers and industry professionals. These engineers design, specify and commission mechanical, electrical and plumbing (MEP), fire/life safety, lighting and controls systems for nonresidential buildings. Consulting-Specifying Engineer covers codes and standards, smart and high-performance buildings and design specifications in a variety of commercial buildings.

Amara Rozgus - Consulting-Specifying Engineer