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

Construction Crane Index: Most major markets’ crane counts increase or hold steady in third quarter Image by Jürgen Rübig from Pixabay
Construction Costs | Oct 16, 2024

Construction Crane Index: Most major markets’ crane counts increase or hold steady in third quarter

Rider Levett Bucknall’s (RLB’s) latest Crane Index and Quarterly Cost Report shows continued decreasing cost inflation and crane counts increasing or holding steady in 10 of the 14 major markets it surveyed. The national average increase in construction costs was 1.07%, the lowest it’s been in the last three years.

AI rendering of airport
AEC Tech | Oct 16, 2024

How AI can augment the design visualization process

Blog author Tim Beecken, AIA, uses the design of an airport as a case-study for AI’s potential in design visualizations.

A hammock grove is one of many wellness amenities within the Student Recreation & Wellness Center at Michigan State University, whose costs are being partly defrayed by a dedicated $340 per year student fee.
University Buildings | Oct 15, 2024

Recreation and wellness are bedfellows in new campus student centers

Student demands for amenities and services that address their emotional and mental wellbeing are impacting new development on college campuses that has led to recreation centers with wellness portfolios.

Higher education community room
Higher Education | Oct 14, 2024

Higher education design for the first-gen college student

In this Design Collaborative blog, Yogen Solanki, Assoc. AIA, shares how architecture and design can help higher education institutions address some of the challenges faced by first-generation students.

Studio Gang's performing arts center for Hudson Valley Shakespeare breaks ground. Rendering courtesy Studio Gang
Performing Arts Centers | Oct 10, 2024

Studio Gang's performing arts center for Hudson Valley Shakespeare breaks ground

A new permanent home for Hudson Valley Shakespeare, a professional non-profit theater company, recently broke ground in Garrison, N.Y. The Samuel H. Scripps Theater Center includes a 14,850 sf performance venue that will serve as a permanent home for the theater company known for its sweeping open-air productions of classics and new works.

Northglenn, a Denver suburb, opens a net zero, all-electric city hall with a mass timber structure. Photo courtesy City of Northglenn
Sustainable Design and Construction | Oct 10, 2024

Northglenn, a Denver suburb, opens a net zero, all-electric city hall with a mass timber structure

Northglenn, Colo., a Denver suburb, has opened the new Northglenn City Hall—a net zero, fully electric building with a mass timber structure. The 32,600-sf, $33.7 million building houses 60 city staffers. Designed by Anderson Mason Dale Architects, Northglenn City Hall is set to become the first municipal building in Colorado, and one of the first in the country, to achieve the Core certification: a green building rating system overseen by the International Living Future Institute.

El Cosmico campground hotel, Marfa, Texas. Rendering courtesy ICON and Bjarke Ingels Group
3D Printing | Oct 9, 2024

3D-printed construction milestones take shape in Tennessee and Texas

Two notable 3D-printed projects mark milestones in the new construction technique of “printing” structures with specialized concrete. In Athens, Tennessee, Walmart hired Alquist 3D to build a 20-foot-high store expansion, one of the largest freestanding 3D-printed commercial concrete structures in the U.S. In Marfa, Texas, the world’s first 3D-printed hotel is under construction at an existing hotel and campground site.

Des Moines University Medicine and Health Sciences opens a new 88-acre campus, Photo: Michael Robinson Photography, courtesy RDG Planning & Design
University Buildings | Oct 9, 2024

Des Moines University Medicine and Health Sciences opens a new 88-acre campus

Des Moines University Medicine and Health Sciences has opened a new campus spanning 88 acres, over three times larger than its previous location. Designed by RDG Planning & Design and built by Turner Construction, the $260 million campus features technology-rich, flexible educational spaces that promote innovative teaching methods, expand research activity, and enhance clinical services. The campus includes four buildings connected with elevated pathways and totaling 382,000 sf. 

University of Maryland begins work on $148 million graduate student housing development Rendering: Gensler
Student Housing | Oct 9, 2024

University of Maryland begins work on $148 million graduate student housing development

The University of Maryland, in partnership with Campus Apartments and Mosaic Development Partners, has broken ground on a $148.75 million graduate student housing project on the university’s flagship College Park campus. The project will add 741 beds in 465 fully furnished apartments.

Healthcare operations design
Healthcare Facilities | Oct 9, 2024

How healthcare operations inform design

Amanda Fisher, Communications Specialist, shares how BWBR's personalized approach and specialized experience can make a meaningful impact to healthcare facilities.

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