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
Green | Mar 25, 2024
Zero-carbon multifamily development designed for transactive energy
Living EmPower House, which is set to be the first zero-carbon, replicable, and equitable multifamily development designed for transactive energy, recently was awarded a $9 million Next EPIC Grant Construction Loan from the State of California.
Museums | Mar 25, 2024
Chrysler Museum of Art’s newly expanded Perry Glass Studio will display the art of glassmaking
In Norfolk, Va., the Chrysler Museum of Art’s Perry Glass Studio, an educational facility for glassmaking, will open a new addition in May. That will be followed by a renovation of the existing building scheduled for completion in December.
Sustainability | Mar 21, 2024
World’s first TRUE-certified building project completed in California
GENESIS Marina, an expansive laboratory and office campus in Brisbane, Calif., is the world’s first Total Resource Use and Efficiency (TRUE)-certified construction endeavor. The certification recognizes projects that achieve outstanding levels of resource efficiency through waste reduction, reuse, and recycling practices.
Office Buildings | Mar 21, 2024
Corporate carbon reduction pledges will have big impact on office market
Corporate carbon reduction commitments will have a significant impact on office leasing over the next few years. Businesses that have pledged to reduce their organization’s impact on climate change must ensure their next lease allows them to show material progress on their goals, according to a report by JLL.
Adaptive Reuse | Mar 21, 2024
Massachusetts launches program to spur office-to-residential conversions statewide
Massachusetts Gov. Maura Healey recently launched a program to help cities across the state identify underused office buildings that are best suited for residential conversions.
Legislation | Mar 21, 2024
Bill would mandate solar panels on public buildings in New York City
A recently introduced bill in the New York City Council would mandate solar panel installations on the roofs of all city-owned buildings. The legislation would require 100 MW of solar photovoltaic systems be installed on public buildings by the end of 2025.
Office Buildings | Mar 21, 2024
BOMA updates floor measurement standard for office buildings
The Building Owners and Managers Association (BOMA) International has released its latest floor measurement standard for office buildings, BOMA 2024 for Office Buildings – ANSI/BOMA Z65.1-2024.
Plumbing | Mar 18, 2024
EPA to revise criteria for WaterSense faucets and faucet accessories
The U.S. Environmental Protection Agency (EPA) plans to revise its criteria for faucets and faucet accessories to earn the WaterSense label. The specification launched in 2007; since then, most faucets now sold in the U.S. meet or exceed the current WaterSense maximum flow rate of 1.5 gallons per minute (gpm).
MFPRO+ New Projects | Mar 18, 2024
Luxury apartments in New York restore and renovate a century-old residential building
COOKFOX Architects has completed a luxury apartment building at 378 West End Avenue in New York City. The project restored and renovated the original residence built in 1915, while extending a new structure east on West 78th Street.