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 7, 2012
Pioneering revival
Financial setbacks didn’t stop this Building Team from transforming the country’s first women’s medical school into a new home for college students.
| Aug 7, 2012
Shedding light on the arts
Renovating Pietro Belluschi’s Juilliard School opens the once-cloistered institution to its Upper West Side community.
| Aug 7, 2012
How to win more state and local government projects
With a huge building stock at their disposal, state and local governments can be attractive clients, especially in these difficult economic times.
| Aug 7, 2012
Pankow names Lum new CEO
Lum joined Pankow in 1980 in Hawaii and has held leadership roles in Pankow’s Honolulu and Northern California regional offices and was appointed president of the firm in 2009.
| Aug 7, 2012
Essex Builders to build church in Somerville, Mass.
The project’s design documents were prepared by Boston Bay Architects and reflect the church’s mission to serve the broader community as well as worship.
| Aug 6, 2012
Johnson Controls GWS appoints Genemaras as COO
Genemaras brings a wealth of experience in international business operations.
| Aug 3, 2012
Goettsch Partners opens new Abu Dhabi office
The GP Abu Dhabi office is managed by Steven M. Nilles, FAIA, LEED AP, a partner in the firm and resident of Abu Dhabi.
| Aug 3, 2012
Nonres construction spending to increase through 2012, growth projected for 2013
Commercial and industrial projects poised to lead building sectors.
| Aug 3, 2012
IBI Group Inc. acquires Taylor Young Limited
Taylor Young is a full services architectural practice including professional skills in urban planning and design and landscape architecture, based in Manchester, U.K.
| Jul 31, 2012
Cohen rejoins Deloitte’s capital projects practice
Cohen has more than 20 years of dispute resolution, project advisory, and risk management experience spanning a wide range of domestic and international engineering and construction projects.
