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

Attendees at the AEC Innovate conference on AI in Boston
AEC Tech Innovation | Jul 4, 2024

Caution competes with inevitability at conference exploring artificial intelligence for design and construction

Hosted by PSMJ, AEC Innovate in Boston found an AEC industry anxiously at the threshold of change.

So you want to get published: What’s next?
Building Team | Jul 3, 2024

So you want to get published: What’s next?

In the AEC industry, securing media attention is no longer a niche endeavor but an essential component of a holistic marketing strategy.

People Discussing Robotic Prototype of Hand. Computer Science Education Concept
Laboratories | Jul 3, 2024

New science, old buildings: Renovating for efficiency, flexibility, and connection

What does the research space of the future look like? And can it be housed in older buildings—or does it require new construction?

Miami's One Twenty Brickell Residences condo tower provides deeded office unit for every buyer. Rendering ARX Creative
MFPRO+ New Projects | Jul 2, 2024

Miami residential condo tower provides a deeded office unit for every buyer

A new Miami residential condo office tower sweetens the deal for buyers by providing an individual, deeded and furnished office with each condo unit purchased. One Twenty Brickell Residences, a 34-story, 240-unit tower, also offers more than 60,000 sf of exclusive residential amenities.

Two-tower luxury senior living community The Mather features wellness and biophilic elements Photo courtesy Mather
Student Housing | Jul 1, 2024

Two-tower luxury senior living community features wellness and biophilic elements

A new, two-building, 27-story senior living community in Tysons, Va., emphasizes wellness and biophilic design elements. The Mather, a luxury community for adults aged 62 and older, is situated on a small site surrounded by high-rises.

Office layout design
Office Buildings | Jul 1, 2024

Mastering office layouts: 5 primary models for maximum efficiency and productivity

When laying out an office, there are many factors to consider. It’s important to maximize the space, but it’s equally important to make sure the design allows employees to work efficiently.

GSA to invest $80 million on smart building technologies at federal properties, Image by Sabine Kroschel from Pixabay
Smart Buildings | Jul 1, 2024

GSA to invest $80 million on smart building technologies at federal properties

The U.S. General Services Administration (GSA) will invest $80 million from the Inflation Reduction Act (IRA) into smart building technologies within 560 federal buildings. GSA intends to enhance operations through granular controls, expand available reporting with more advanced metering sources, and optimize the operator experience.

Amazon, JPMorgan Chase among companies collaborating with ILFI to advance carbon verification, Photo: Pixabay
Sustainability | Jul 1, 2024

Amazon, JPMorgan Chase among companies collaborating with ILFI to advance carbon verification

Four companies (Amazon, JPMorgan Chase, JLL, and Prologis) are working with the International Living Future Institute to support development of new versions of Zero Carbon Certification.

Image by nhicnttcantho from Pixabay
K-12 Schools | Jul 1, 2024

New guidelines for securing schools and community spaces released by the Door Security and Safety Foundation

The Door Security and Safety Foundation (DSSF), in collaboration with Door and Hardware Institute (DHI), recently released of “Are Your Door Openings Secure?.” The document provides guidelines to equip school administrators, building management personnel, and community leaders with a clear roadmap to create a secure and safe environment. 

Top products from AIA 2024
Products and Materials | Jun 30, 2024

Top products from AIA 2024

This month, Building Design+Construction editors are bringing you the top products displayed at the 2024 AIA Conference on Architecture & Design. Nearly 550 building product manufacturers showcased their products—here are 17 that caught our eye.

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