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
Healthcare Facilities | Mar 22, 2023
New Jersey’s new surgical tower features state’s first intraoperative MRI system
Hackensack (N.J.) University Medical Center recently opened its 530,000-sf Helena Theurer Pavilion, a nine-story surgical and intensive care tower designed by RSC Architects and Page. The county’s first hospital, Hackensack University Medical Center, a 781-bed nonprofit teaching and research hospital, was founded in 1888.
Project + Process Innovation | Mar 22, 2023
Onsite prefabrication for healthcare construction: It's more than a process, it's a partnership
Prefabrication can help project teams navigate an uncertain market. GBBN's Mickey LeRoy, AIA, ACHA, LEED AP, explains the difference between onsite and offsite prefabrication methods for healthcare construction projects.
Geothermal Technology | Mar 22, 2023
Lendlease secures grants for New York’s largest geothermal residential building
Lendlease and joint venture partner Aware Super, one of Australia’s largest superannuation funds, have acquired $4 million in support from the New York State Energy Research and Development Authority to build a geoexchange system at 1 Java Street in Brooklyn. Once completed, the all-electric property will be the largest residential project in New York State to use a geothermal heat exchange system.
Women in Design+Construction | Mar 21, 2023
Two leading women in construction events unite in 2023
The new Women in Residential + Commercial Construction Conference (WIR+CC) will take place in Nashville, Tenn., October 25-27, 2023. Combining these two long-standing events aligns with our mission to create an event most impactful for women in the $1.4 trillion U.S. commercial and residential design and construction industry.
Mass Timber | Mar 19, 2023
A 100% mass timber construction project is under way in North Carolina
An office building 100% made from mass timber has started construction within the Live Oak Bank campus in Wilmington, N.C. The 67,000-sf structure, a joint building venture between the GCs Swinerton and Wilmington-headquartered Monteith Construction, is scheduled for completion in early 2024.
Sports and Recreational Facilities | Mar 17, 2023
Aurora, Colo., recreation center features city’s first indoor field house, unobstructed views of the Rocky Mountains
In January, design firm Populous and the City of Aurora, Colo. marked the opening of the Southeast Aurora Recreation Center and Fieldhouse. The 77,000-sf facility draws design inspiration from the nearby Rocky Mountains. With natural Douglas Fir structure and decking, the building aims to mimic the geography of a canyon.
Sustainability | Mar 16, 2023
Lack of standards for carbon accounting hamper emissions reduction
A lack of universally accepted standards for collecting, managing, and storing greenhouse gas emissions data (i.e., carbon accounting) is holding back carbon reduction efforts, according to an essay published by the Rocky Mountain Institute.
Sports and Recreational Facilities | Mar 15, 2023
Georgia State University Convocation Center revitalizes long-neglected Atlanta neighborhood
Georgia State University’s new Convocation Center doubles the arena it replaces and is expected to give a shot in the arm to a long-neglected Atlanta neighborhood. The new 200,000 sf multi-use venue in the Summerhill area of Atlanta is the new home for the university’s men’s and women’s basketball teams and will also be used for large-scale academic and community events.
Sponsored | Cladding and Facade Systems | Mar 15, 2023
Metal cladding trends and innovations
Metal cladding is on a growth trajectory globally. This is reflected in rising demand for rainscreen cladding and architectural metal coatings. This course covers the latest trends and innovations in the metal cladding market.
Building Tech | Mar 14, 2023
Reaping the benefits of offsite construction, with ICC's Ryan Colker
Ryan Colker, VP of Innovation at the International Code Council, discusses how municipal regulations and inspections are keeping up with the expansion of off-site manufacturing for commercial construction. Colker speaks with BD+C's John Caulfield.
