flexiblefullpage

HORIZONTV FEATURING BD+C: WATCH EPISODES ON DEMAND AT HORIZONTV

Menu View Full Menu
Subscribe Here
billboard
interstitial1
catfish1
Currently Reading

Calculating the ROI of building enclosure commissioning

Calculating the ROI of building enclosure commissioning

A researcher at Lawrence Berkeley National Laboratory calls building enclosure commissioning “the single-most cost-effective strategy for reducing energy, costs, and greenhouse gas emissions in buildings today.”

By C.C. Sullivan | June 28, 2013
Continue Reading
According to Evan Mills, PhD, a researcher at Lawrence Berkeley National Laboratory, building enclosure commissioning, or BECx, should be viewed as “the single-most cost-effective strategy for reducing energy, costs, and greenhouse gas emissions in buildings today.”
 
(This article excerpted from BD+C's June 2013 AIA/CES course on cladding and exterior insulation. Take this free course at BD+C University.)
 
Mills studied the benefits of BECx, noting that commissioning only costs about $1.16/sf for new construction and $0.30/sf for existing buildings on average, with a payback period of as little as 14 months. Savings associated with using BECx from both maintenance and energy savings average about 16% for existing buildings and 13% for new construction. The main benefit is that whole-building energy savings are guaranteed, thanks to the pivotal role of the enclosure in determining efficiency performance.
 
“Further enhancing the value of commissioning, its non-energy benefits surpass those of most other energy-management practices,” including major first-cost savings through right-sizing of HVAC equipment, Mills has testified. “When accounting for these benefits, the net median commissioning project cost was reduced by 49% on average, while in many cases they exceeded the direct value of the energy savings.”
 
The National Institute of Building Sciences published its NIBS Guideline 3-2012 on enclosure commissioning last year. The U.S. Green Building Council has allowed the application of BECx to earn an innovation credit in the LEED rating system, and BECx was even considered as a prerequisite, but that proposal lost momentum, says Rob Kistler, AIA, NCARB, Committee Chair for NIBS Guideline 3 and Principal, The Facade Group.
 
It appears that LEED v4 will not explicitly encourage the detail review, onsite testing, and observation that some enclosure experts say is what makes BECx effective, notes Tristan Roberts, with BuildingGreen’s LEEDUser service. Instead, the new LEED draft language directly quotes NIBS Guideline 3, which describes the following techniques as part of proper BECx for enhanced building commissioning:
•  Devise a plan early in the project cycle that describes testing requirements, acceptance criteria, and documentation.
•  Review details in the construction documentation to check for overall performance, continuity of weather barriers and insulation, and constructability.
•  Conduct observations on the job site as required for critical milestones in enclosure installation, from field mockups to trades startup to field testing.
•  Use mockups to benchmark workmanship requirements and ensure compliance with specifications and manufacturer’s installation requirements.
 
The NIBS committee for BECx, which Altenhofen serves on, recommends including a consulting enclosure expert for the building project, especially in the construction administration phase. The expert will help ensure proposed cladding materials and systems are integrated properly into the design process, followed by visual observations of a statistical sampling of installation of work. Toward the end of the CA phase and before acceptance, a blower-door test will check whether the air infiltration levels are equal to or better than standard.
 
As noted in the summary of NIBS Guideline 3, BECx helps reduce the chances that inadequate cladding work will be discovered during the punch list phase: “The performance of the enclosure cannot be verified until the entire building is completely enclosed. At this time it is not possible to tune or dial in the performance. To access a nonperforming subsystem or assembly might be very expensive.”
 
(This article excerpted from BD+C's June 2013 AIA/CES course on cladding and exterior insulation. Take this free course at BD+C University.)

Tags

Related Stories

ISD Marathon STEM and Robotics Center, Photo: Mariella and Luis Ayala, Ayala Vargas Photography
K-12 Schools | Aug 8, 2024

New K-12 STEM center hosts robotics learning, competitions in Houston suburb

A new K-12 STEM Center in a Houston suburb is the venue for robotics learning and competitions along with education about other STEM subjects. An unused storage building was transformed into a lively space for students to immerse themselves in STEM subjects. Located in Texas City, the ISD Marathon STEM and Robotics Center is the first of its kind in the district. 

Rendering of The Phoenix affordable housing development
Affordable Housing | Aug 7, 2024

The future of affordable housing may be modular, AI-driven, and made of mushrooms

Demolished in 1989, The Phoenix Ironworks Steel Factory left a five-acre hole in West Oakland, Calif. After sitting vacant for nearly three decades, the site will soon become utilized again in the form of 316 affordable housing units.

People talking in the office
Architects | Aug 5, 2024

Mastering the art of project schedule: Expert insights on design and construction

We sat down with two experts in the design field, Ron Dick (Founding Partner and Architect) and Mike Niezer (COO and Architect), to talk about everything you need to know about the entire process.

UC Riverside’s Student Health and Counseling Center provides an environment on par with major medical centers Photo courtesy HGA
University Buildings | Aug 1, 2024

UC Riverside’s student health center provides an environment on par with major medical centers

The University of California, Riverside's new Student Health and Counseling Center (SHCC) provides a holistic approach to wellness for students throughout the UC Riverside campus. Designed by HGA and delivered through a design-build partnership with Turner Construction Company, SHCC provides healthcare offerings in an environment on par with major medical centers.

library
Libraries | Aug 1, 2024

How current and future trends are shaping the libraries of tomorrow

Over the last few years, public libraries have transitioned from being buildings that only store and lend books to being fully featured community centers.

Image by Peggy und Marco Lachmann-Anke from Pixabay
MFPRO+ News | Aug 1, 2024

Canada tries massive incentive program to spur new multifamily housing construction

Canada has taken the unprecedented step of offering billions in infrastructure funds to communities in return for eliminating single-family housing zoning.

Multiple energy sources will power Charlotte’s new Fire Station #30, including solar roof panels and geothermal wells.
Government Buildings | Aug 1, 2024

One of the country’s first all-electric fire stations will use no outside energy sources

Charlotte, N.C.’s new Fire Station #30 will be one of the country’s first all-electric fire stations, using no outside energy sources other than diesel fuel for one or two of the fire trucks. Multiple energy sources will power the station, including solar roof panels and geothermal wells. The two-story building features three truck bays, two fire poles, dispatch area, contamination room, and gear storage.

Image by Ralph from Pixabay
Contractors | Aug 1, 2024

Nonresidential construction spending decreased 0.2% in June

National nonresidential construction spending declined 0.2% in June, according to an Associated Builders and Contractors analysis of data published today by the U.S. Census Bureau. On a seasonally adjusted annualized basis, nonresidential spending totaled $1.21 trillion. Nonresidential construction has expanded 5.3% from a year ago.

University of Michigan’s Central Campus residence hall, as seen looking west from Hill Street. Rendering © RAMSA
Student Housing | Jul 31, 2024

The University of Michigan addresses a decades-long student housing shortage with a new housing-dining facility

The University of Michigan has faced a decades-long shortage of on-campus student housing. In a couple of years, the situation should significantly improve with the addition of a new residential community on Central Campus in Ann Arbor, Mich. The University of Michigan has engaged American Campus Communities in a public-private partnership to lead the development of the environmentally sustainable living-learning student community.

Image by Pexels from Pixabay
MFPRO+ New Projects | Jul 31, 2024

Shipping containers converted into attractive, affordable multifamily housing in L.A.

In the Watts neighborhood in Los Angeles, a new affordable multifamily housing project using shipping containers resulted in 24 micro-units for formerly unhoused residents. The containers were acquired from a nearby port and converted into housing units at a factory.

boombox1
boombox2

Top Articles

native1

More In Category

Urban Planning

Bridging the gap: How early architect involvement can revolutionize a city’s capital improvement plans

Capital Improvement Plans (CIPs) typically span three to five years and outline future city projects and their costs. While they set the stage, the design and construction of these projects often extend beyond the CIP window, leading to a disconnect between the initial budget and evolving project scope. This can result in financial shortfalls, forcing cities to cut back on critical project features.

Libraries

Reasons to reinvent the Midcentury academic library

DLR Group's Interior Design Leader Gretchen Holy, Assoc. IIDA, shares the idea that a designer's responsibility to embrace a library’s history, respect its past, and create an environment that will serve student populations for the next 100 years.

halfpage1

Most Popular Content

  1. 2021 Giants 400 Report
  2. Top 150 Architecture Firms for 2019
  3. 13 projects that represent the future of affordable housing
  4. Sagrada Familia completion date pushed back due to coronavirus
  5. Top 160 Architecture Firms 2021