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
| Jul 27, 2014
Top Data Center Engineering Firms [2014 Giants 300 Report]
Fluor, Jacobs, and Syska Hennessy top Building Design+Construction's 2014 ranking of the largest data center engineering and engineering/architecture firms in the U.S.
| Jul 27, 2014
Top Data Center Architecture Firms [2014 Giants 300 Report]
Gensler, Corgan, and HDR head Building Design+Construction's 2014 ranking of the largest data center architecture and architecture/engineering firms in the U.S.
| Jul 25, 2014
Grocery stores choosing Green Globes for building sustainability certification
The Green Building Initiative (GBI) has announced a wave of Green Globes certifications for new grocery stores, including New Seasons Markets, Whole Foods, Price Chopper, Aldi’s, Harris Teeter, Wegmans, and Publix.
| Jul 24, 2014
MIT researchers explore how to make wood composite-like blocks of bamboo
The concept behind the research is to slice the stalk of bamboo grass into smaller pieces to bond together and form sturdy blocks, much like conventional wood composites.
| Jul 24, 2014
Glazing options in correctional and detention facilities
Like it or not, the number of incarcerated people in the U.S. continues to rise. With that, increased security in all aspects of these facilities continues to be a priority. This is where security glazing products that allow line of sight for supervisors to observe and still maintain secure separation can play a key role. SPONSORED CONTENT
| Jul 23, 2014
Holistic care model, regulatory changes make outpatient facilities a high priority [2014 Giants 300 Report]
With the Affordable Care Act still in its infancy, Building Teams are seeing reverberations in the investment decisions of healthcare providers, including new ideas about the types of buildings they are asked to create.
| Jul 23, 2014
Meet Acquario Ceará: The giant crustacean-shaped aquarium that's causing concerns
A new aquarium on Brazil's northeastern coast is designed, engineered, constructed and financed by U.S. firms and institutions.
| Jul 23, 2014
Top Healthcare Sector Construction Firms [2014 Giants 300 Report]
Turner, McCarthy, and Skanska USA top Building Design+Construction's 2014 ranking of the largest healthcare contractors and construction management firms in the U.S.
| Jul 23, 2014
Top Healthcare Sector Engineering Firms [2014 Giants 300 Report]
AECOM, Jacobs, and URS Corp. top Building Design+Construction's 2014 ranking of the largest healthcare engineering and engineering/architecture firms in the U.S.
| Jul 23, 2014
Top Healthcare Sector Architecture Firms [2014 Giants 300 Report]
HDR, Stantec, and HKS top Building Design+Construction's 2014 ranking of the largest healthcare architecture and architecture/engineering firms in the U.S.
