Six Key Changes in LEED v4
LEED v4 is the latest version of the U.S. Green Building Council’s (USGBC) Leadership in Energy and Environmental Design (LEED) rating system. More than 20 years ago, USGBC was established to help promote sustainability within the built environment.
Today, LEED has become a standard around the world for the design, construction and operation of high-performance structures. LEED v4 includes a comprehensive technical update to rating system requirements, as well as other changes. New construction building commissioning is the process of verifying that building systems meet the owner’s requirements and are installed and operate as intended by the design engineer. Here’s six key ways in the which the Fundamental Commissioning process has evolved with v4:
- Third-party commissioning providers. In the past, a third-party commissioning provider (CxP) was brought on for projects over 50,000 square feet. Today that number has moved down to 20,000 square feet.
- Get the CxP involved earlier. The CxP should now be brought into project prior to the end of the design development phase. Commissioning should not be thought of as something that happens at the end of construction.
- Exterior enclosure must be addressed in LEED documents. The third change requires the Owner’s Project Requirements (OPR) and Basis of Design (BOD) to reference the building’s exterior enclosure. This applies even if the project team is not pursuing the enhanced commissioning building enclosure commissioning option.
- Design reviews. The design review now happens in the fundamental commissioning scope, as opposed to the enhanced commissioning scope as was the case in previous versions of LEED.
- Additional systems to commission. Now included in the systems for the CxA to commission are electrical service and distribution, as well as the plumbing systems, including pumps and controls.
- Facilities, operations and maintenance. The final change required by LEED v4 is for the CxP to deliver current facility requirements and an operations and maintenance (O&M) Plan. The O&M plan includes things such as systems narrative, sequence of operation, building occupancy schedule, PM plan, ongoing commissioning tasks, and so forth.
For more information regarding commissioning, please click here.