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
| Jun 8, 2012
Allsteel names Kris Yates to head architectural products group
Yates is responsible for the start up, launch and ongoing sales and marketing of Allsteel’s new Beyond movable walls.
| Jun 8, 2012
Chestnut Hill College dedicates Jack and Rosemary Murphy Gulati complex
Casaccio Yu Architects designed the 11,300-sf fitness and social complex.
| Jun 7, 2012
Waterline exhibition displays visions for re-thinking the Chicago River
The designs of Waterline showcase why the Chicago River should once again be considered the city’s most important asset and sets the stage for increased awareness, education and reinvention of the River.
| Jun 7, 2012
WDMA and FMA to affiliate and integrate operations
Over the coming months both organizations will begin the process of formalizing the details of the agreement for final approval by both organizations, with the formal change expected to take effect in January 2015.
| Jun 7, 2012
Craig joins Cannon Design as associate principal
Craig will work closely with the firm's Corporate/Commercial Interiors leadership to help facilitate initiatives that strengthen awareness around workplace innovation and offer counsel on strategic workplace decisions.
| Jun 7, 2012
Stantec publishes 2011 corporate Sustainability Report
Stantec's fifth annual Sustainability Report was prepared in accordance with the internationally recognized G3.1 Sustainability Reporting Guidelines, developed by the Global Reporting Initiative.
| Jun 6, 2012
KPF designs tower for Yongsan IBD
The master plan, created by Studio Daniel Libeskind, is a dynamic urban environment containing contributions from 19 different architects practicing in diverse locations around the globe.
| Jun 6, 2012
SOM urges Chicago tenants to partner with landlords to cut energy use
Tenants can exceed building energy challenge targets recently announced by Mayor Emanuel.
| Jun 6, 2012
KLMK Group awarded contract with Parkland Health & Hospital System in Texas
KLMK will also provide planning guidance in all aspects of the project related to facility activation.
| Jun 5, 2012
Cannon Design joins forces with Peter Ellis New Cities
Peter Ellis will now lead Cannon Design's urban planning and city design practice in collaboration with the firm's executive leadership.
