flexiblefullpage
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
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.)

Related Stories

| Jun 17, 2013

DOE launches database on energy performance of 60,000 buildings

The Energy Department today launched a new Buildings Performance Database, the largest free, publicly available database of residential and commercial building energy performance information.

| Jun 14, 2013

First look: Callebaut's eye-popping Möbius building for Taichung arts center

French design firm Vincent Callebaut Architectures has released renderings of  "Swallow's Nest," an entry in a design competition for a new cultural center, fine arts museum, and public library in Taichung City, Taiwan. The building, based on a Möbius ring, swirls around a central "Endless Patio."

| Jun 14, 2013

Purdue, industry partners test light steel framing for seismic safety

A partnership of leading earthquake engineering researchers from top U.S. and Canadian universities and design professionals from the steel industry have begun the final phase of a three-year project to increase the seismic safety of buildings that use lightweight cold-formed steel for their primary beams and columns. 

| Jun 13, 2013

7 great places that represent excellence in environmental design

An adaptive reuse to create LEED Platinum offices, a park that honors veterans, and a grand national plaza are among the seven projects named winners of the 2013 Great Places Awards. The Environmental Design and Research Association  recognize professional and scholarly excellence in environmental design, with special attention paid to the relationship between physical form and human activity or experience.

| Jun 13, 2013

Richard Smith joins Cannon Design Science + Technology practice

Cannon Design, an internationally ranked architectural, engineering and planning firm, is pleased to announce Richard Smith has joined the firm as a Principal. Smith joins the leadership team for Cannon Design’s Science + Technology (S&T) practice and will focus on developing strategies for immediate and long-term growth.

| Jun 13, 2013

Winfrey hired as Health and S&T studio head for SmithGroupJJR Dallas

SmithGroupJJR, one of the nation’s largest architecture, engineering and planning firms, has hired David Winfrey, AIA, LEED AP BD+C, as leader of its  Health and Science & Technology Studio at its Dallas, Texas office.

| Jun 13, 2013

WorkingBuildings acquires Specialty Operations Solutions

The WorkingBuildings Companies, a leading provider of comprehensive Owner-based solutions for the built environment, announces the acquisition of Specialty Operations Solutions (SOS), a national provider of research and laboratory services.

| Jun 13, 2013

Health Product Declaration Collaborative names Knott as Executive Director

John L. Knott Jr. has been named as the Health Product Declaration Collaborative’s (www.hpdcollaborative.org) first Executive Director following a national search. The Health Product Declaration Collaborative (HPDC) is a customer-led standards-setting organization committed to the continuous improvement of the building industry’s environmental and health performance, through transparency and innovation in the building product supply chain.

| Jun 13, 2013

AIA partners with industry groups to launch $30,000 'Designing Recovery' design competition

The program will award a total of $30,000 to three winning designs, divided equally between three locations: Joplin, Mo., New Orleans, and New York. 

| Jun 12, 2013

More than 90% of New York City schools have code violations

More than 90% of New York City schools have at least one outstanding building code violation. Loose wires, stuck doors and inadequate ventilation are just some of the problems.

boombox1
boombox2
native1

More In Category

Construction Costs

Data center construction costs for 2024

Gordian’s data features more than 100 building models, including computer data centers. These localized models allow architects, engineers, and other preconstruction professionals to quickly and accurately create conceptual estimates for future builds. This table shows a five-year view of costs per square foot for one-story computer data centers. 


Sustainability

Grimshaw launches free online tool to help accelerate decarbonization of buildings

Minoro, an online platform to help accelerate the decarbonization of buildings, was recently launched by architecture firm Grimshaw, in collaboration with more than 20 supporting organizations including World Business Council for Sustainable Development (WBCSD), RIBA, Architecture 2030, the World Green Building Council (WorldGBC) and several national Green Building Councils from across the globe.



Healthcare Facilities

Watch on-demand: Key Trends in the Healthcare Facilities Market for 2024-2025

Join the Building Design+Construction editorial team for this on-demand webinar on key trends, innovations, and opportunities in the $65 billion U.S. healthcare buildings market. A panel of healthcare design and construction experts present their latest projects, trends, innovations, opportunities, and data/research on key healthcare facilities sub-sectors. A 2024-2025 U.S. healthcare facilities market outlook is also presented.

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