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 30, 2014
German students design rooftop solar panels that double as housing
Students at the Frankfurt University of Applied Sciences designed a solar panel that can double as living space for the Solar Decathlon Europe.
| Jul 30, 2014
Restaurants, farmers' markets high on urban dwellers' wish list: Sasaki report
Urban dwellers love food-related resources, public spaces, and historic structures—but really hate traffic, lack of parking, and poor public transportation.
| Jul 30, 2014
Nonresidential building activity on the rise for 2015: AIA Forecast
Semiannual Consensus Construction Forecast predicts 4.9% increase this year, 8% next year, with offices and retail facilities leading the charge.
| Jul 29, 2014
Studio Gang Architects, MAD to design George Lucas' museum in Chicago
Star Wars director George Lucas selected Chicago-based Studio Gang Architects and Beijing firm MAD to design his proposed art museum on Chicago’s lakefront.
| Jul 29, 2014
AECOM's buying spree continues: Deal to acquire Hunt Construction Group in the works
The acquisition comes just two weeks after AECOM's $6 billion deal to acquire rival engineering and construction company URS Corp.
| Jul 29, 2014
Best practices for public-private partnerships: Free AIAI guide
Resource explores P3 best practices, including legislation and procurement methods.
| Jul 28, 2014
Reconstruction market benefits from improving economy, new technology [2014 Giants 300 Report]
Following years of fairly lackluster demand for commercial property remodeling, reconstruction revenue is improving, according to the 2014 Giants 300 report.
| Jul 28, 2014
Reconstruction Sector Construction Firms [2014 Giants 300 Report]
Structure Tone, Turner, and Gilbane top Building Design+Construction's 2014 ranking of the largest reconstruction contractor and construction management firms in the U.S.
| Jul 28, 2014
Reconstruction Sector Engineering Firms [2014 Giants 300 Report]
Jacobs, URS, and Wiss, Janney, Elstner top Building Design+Construction's 2014 ranking of the largest reconstruction engineering and engineering/architecture firms in the U.S.
| Jul 28, 2014
Reconstruction Sector Architecture Firms [2014 Giants 300 Report]
Stantec, HDR, and HOK top Building Design+Construction's 2014 ranking of the largest reconstruction architecture and architecture/engineering firms in the U.S.
