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

| Aug 11, 2010

Jacobs, CH2M Hill, AECOM top BD+C's ranking of the 75 largest federal government design firms

A ranking of the Top 75 Federal Government Design Firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants

| Aug 11, 2010

Manhattan's Pier 57 to be transformed into cultural center, small business incubator, and public park as part of $210 million redevelopment plan

LOT-EK, Beyer Blinder Belle, and West 8 have been selected as the design team for Hudson River Park’s Pier 57 at 15th Street and the Hudson River as part of the development group led by New York-based real estate developer YoungWoo & Associates. The 375,000 square foot vacant, former passenger ship terminal will be transformed into a cultural center, small business incubator, and public park, including a rooftop venue for the Tribeca Film Festival.

| Aug 11, 2010

AIA selects three projects for National Healthcare Design Awards

The American Institute of Architects (AIA) Academy of Architecture for Health (AAH) have selected the recipients of the AIA National Healthcare Design Awards program. The AIA Healthcare Awards program showcases the best of healthcare building design and healthcare design-oriented research.  Projects exhibit conceptual strengths that solve aesthetic, civic, urban, and social concerns as well as the requisite functional and sustainability concerns of a hospital.

| Aug 11, 2010

AGC: Construction employment declines in 47 states in July

Few states were immune from construction employment declines this July based on an analysis of federal employment data released today by the Associated General Contractors of America.  That analysis found that 47 states saw declines in construction employment, while only two states saw increases and one saw no change in construction employment between July 2008 and July 2009.

| Aug 11, 2010

AGC: Construction unemployment reaches 19.2%

Unemployment in the construction sector climbed to a “horrendous” 19.2 percent (not-seasonally adjusted) as an additional 59,000 construction workers lost their jobs in May according to new federal data, said construction economist Ken Simonson today.

| Aug 11, 2010

Gensler, HOK, HDR among the nation's leading reconstruction design firms, according to BD+C's Giants 300 report

A ranking of the Top 100 Reconstruction Design Firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants

| Aug 11, 2010

Gensler, Arup, HOK among the largest office sector design firms

A ranking of the Top 100 Office Design firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants

| Aug 11, 2010

Callison strengthens retail design presence with RYA acquisition

Callison LLC on June 1 acquired RYA Design Consultancy, a Dallas-based retail architecture and design firm with offices in New York City. The new “Callison RYA Studio” will merge staff and clients into Callison ’s existing retail practice at their Dallas and New York offices.

| Aug 11, 2010

Prism-shaped design unveiled for five-star hotel in Saudi Arabia

Goettsch Partners has been commissioned by Saudi Oger Ltd. to design a new five-star, 214-key business hotel in the King Abdullah Financial District in Riyadh, Saudi Arabia. As a design-build assignment, Saudi Oger is serving as the contractor, selected by developer Rayadah Investment Company. The project is sited on Parcel 1.08, one of the first 10 parcels currently under development in the massive new master-planned district.

| Aug 11, 2010

Stellar awarded military contracts for projects on six bases totaling nearly $70 million

boombox1
boombox2

Top Articles

native1

More In Category

Adaptive Reuse

Detroit’s Michigan Central Station, centerpiece of innovation hub, opens

The recently opened Michigan Central Station in Detroit is the centerpiece of a 30-acre technology and cultural hub that will include development of urban transportation solutions. The six-year adaptive reuse project of the 640,000 sf historic station, created by the same architect as New York’s Grand Central Station, is the latest sign of a reinvigorating Detroit.

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