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

7 steps to investigating curtain wall leaks, Photo: Pixabay
Curtain Wall | Aug 15, 2024

7 steps to investigating curtain wall leaks

It is common for significant curtain wall leakage to involve multiple variables. Therefore, a comprehensive multi-faceted investigation is required to determine the origin of leakage, according to building enclosure consultants Richard Aeck and John A. Rudisill with Rimkus. 

Report outlines how Atlanta can collaborate with private sector to spur more housing construction Image by Pharaoh_EZYPT from Pixabay
MFPRO+ News | Aug 14, 2024

Report outlines how Atlanta can collaborate with private sector to spur more housing construction

A report by an Urban Land Institute’s Advisory Services panel, commissioned by the city’s housing authority, Atlanta Housing (AH), offered ways the city could collaborate with developers to spur more housing construction.

8 Canada Square, a Norman Foster-designed office building that’s currently the global headquarters of HSBC Holdings, will have large sections of its façade removed to create landscaped terraces. Design by KPF.
Adaptive Reuse | Aug 14, 2024

KPF unveils design for repositioning of Norman Foster’s 8 Canada Square tower in London

8 Canada Square, a Norman Foster-designed office building that’s currently the global headquarters of HSBC Holdings, will have large sections of its façade removed to create landscaped terraces. The project, designed by KPF, will be the world’s largest transformation of an office tower into a sustainable mixed-use building.

World’s first TRUE Zero Waste for Construction-certified public project, Contra Costa County Administration Building in Martinez, Calif. Photo by Kyle Jeffers Photo, courtesy Webcor
Sustainability | Aug 14, 2024

World’s first TRUE Zero Waste for Construction-certified public project delivered in Calif.

The Contra Costa County Administration Building in Martinez, Calif., is the world’s first public project to achieve the zero-waste-focused TRUE Gold certification for construction. The TRUE Certification for Construction program, administered by Green Business Certification Inc. (GBCI), recognizes projects that achieve exceptional levels of waste reduction, reuse, and recycling.

Mike Sinclair Photo of 80-unit modular construction project in Kansas City
Modular Building | Aug 13, 2024

Strategies for attainable housing design with modular construction

Urban, market-rate housing that lower-income workers can actually afford is one of our country’s biggest needs. For multifamily designers, this challenge presents several opportunities for creating housing that workers can afford on their salaries.

Harvard Pagliuca Life Lab
University Buildings | Aug 12, 2024

Planning for growing computer science programs

Driven by emerging AI developments and digital transformation in the business world, university computer science programs are projected to grow by nearly 15% by 2030.

Artificial intelligence could help reduce energy consumption by as much as 40% by 2050 Image by Tung Nguyen from Pixabay
Energy Efficiency | Aug 9, 2024

Artificial intelligence could help reduce energy consumption by as much as 40% by 2050

Artificial intelligence could help U.S. buildings to significantly reduce energy consumption and carbon emissions, according to a paper by researchers at the Lawrence Berkeley National Laboratory.

AIA course: U.S. healthcare building sector trends and innovations for 2024-2025
Sponsored | Healthcare Facilities | Aug 8, 2024

U.S. healthcare building sector trends and innovations for 2024-2025

As new medicines, treatment regimens, and clinical protocols radically alter the medical world, facilities and building environments in which they take form are similarly evolving rapidly. Innovations and trends related to products, materials, assemblies, and building systems for the U.S. healthcare building sector have opened new avenues for better care delivery. Discussions with leading healthcare architecture, engineering, and construction (AEC) firms and owners-operators offer insights into some of the most promising directions. This course is worth 1.0 AIA/HSW learning unit.

Polsinelli Law Office Reception Area
Office Buildings | Aug 8, 2024

6 design trends for the legal workplace

Law firms differ from many professional organizations in their need for private offices to meet confidentiality with clients and write and review legal documents in quiet, focused environments

Photo by Brett Sayles via Pexels
Data Centers | Aug 8, 2024

Global edge data center market to cross $300 billion by 2026, says JLL

Technological megatrends, including IoT and generative AI, will require computing power to be closer to data generation and consumption, fueling growth of edge IT infrastructure, according to a new JLL report.

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