While suspended, lay-in ceilings have long been the norm in commercial design, the open-plenum ceiling has become trendy and economical, particularly in office and retail environments. However, calculating the tradeoffs between cost and performance can be tricky.
Very little data exists comparing suspended ceilings with open ceilings on the basis of cost and performance. The most recent study came from the Ceilings & Interior Systems Construction Association (www.cisca.org) five years ago. In the study, office and retail spaces were modeled in Chicago, Charlotte, Oklahoma City, Orlando, and Phoenix to reflect the differences in energy costs, climate, and installation costs. Initial construction costs were determined using RSMeans data; annual operating costs for HVAC, lighting, and maintenance were calculated according to Building Owners and Managers Association data.
The study found initial construction costs for suspended ceilings to be 15-22% higher in offices, and 4-11% higher in retail spaces. However, total energy savings for lay-in ceilings vs. open plenums were 9-10.3% in offices and 12.7-17% for retail. A 10.5% energy reduction qualifies buildings for a LEED EA credit, and a 14% reduction is good for two points.
The study attributed the energy performance advantage of suspended ceilings to the use of a return air plenum with low static pressures and fan horsepower vs. ducted air returns with higher static pressures and fan horsepower in open-plenum systems. In addition, return air plenums more efficiently remove heat from lighting systems and reduce the AC load. Suspended ceilings also offer about 20% higher light reflectance, thereby reducing lighting costs.
For more information, see: http://www.cisca.org/files/public/LCS_brochure_rev_9-08_lo-res.pdf.
Related Stories
| Aug 16, 2013
$5,000 in prizes to be awarded at BD+C's U40 Leadership Summit
Do you have the next big idea for improving the performance of buildings and the built environment? BD+C's 3rd Annual U40 Leadership Summit is your chance to shine—and share in $5,000 in prizes.
| Aug 15, 2013
Design-build project delivery holds steady at nearly 40% of nonresidential construction: DBIA study
The Design-Build Institute of America (DBIA), the only organization that defines, teaches and promotes best practices in design-build, has released research indicating that design-build project delivery represents nearly 40 percent of total market share in the United States, based on dollar value at the end of 2012.
| Aug 15, 2013
What do LEED and black magic have in common? A project principal leverages PDFs to demystify it for us.
LEED has become a labyrinth of standards which requires a full-time translator and tour guide to navigate. Now with LEED v4 on the horizon, I’m curious to see if any progress has been made to make these standards more consumable and applicable to true innovations within the six areas of sustainability.
| Aug 15, 2013
Nonresidential construction finally gaining momentum: Gilbane summer economic report
Gilbane Building Company today announces the publication of the Summer 2013 edition of Construction Economics – Market Conditions in Construction. Based on an array of economic data, construction starts, and material cost trends, the data continues to show positive growth for the industry.
| Aug 14, 2013
Five projects receive 2013 Educational Facility Design Excellence Award
The American Institute of Architects (AIA) Committee on Architecture for Education (CAE) has selected five educational and cultural facilities for this year’s CAE Educational Facility Design Awards.
| Aug 14, 2013
Warehouses go vertical in NAIOP distribution/fulfillment center design competition
NAIOP, the Commercial Real Estate Development Association, has selected Ware Malcomb, a contemporary full-service architectural design firm headquartered in Irvine, California, and Riddell Kurczaba, a design consulting firm located in Calgary and Edmonton, Alberta, Canada, as winners of the 2013 Distribution/Fulfillment Center Design of the Future.
| Aug 14, 2013
Green Building Report [2013 Giants 300 Report]
Building Design+Construction's rankings of the nation's largest green design and construction firms.
| Aug 14, 2013
Military Construction Report [2013 Giants 300 Report]
Building Design+Construction's rankings of the nation's largest military sector design and construction firms, as reported in the 2013 Giants 300 Report.
| Aug 13, 2013
DPR's Phoenix office, designed by SmithGroupJJR, affirmed as world's largest ILFI-certified net-zero facility
The new Phoenix Regional Office of DPR Construction, designed by SmithGroupJJR, has been officially certified as a Net Zero Energy Building by the International Living Future Institute (ILFI). It’s the largest building in the world to achieve Net Zero Energy Building Certification through the Institute to date.
