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
| Sep 12, 2011
First phase of plan to revitalize Florida's Hialeah Park announced
This is the first project of a master plan developed to revive the historic racetrack.
| Sep 12, 2011
Geist opens European branch
The new branch provides the company’s international clients with additional support and services.
| Sep 9, 2011
$22 million investment made in energy efficient building maker
The buildings use at least 25% less energy than the strictest building codes in the U.S., and as much as 80% less energy in certain parts of the country.
| Sep 9, 2011
Hardinger joins Ryan Companies as vice president, mission critical
He will lead the Ryan team responsible for building and developing data centers and other mission-critical projects, and will oversee business development, client relationships, executive level communications and overall marketing strategies for the division.
| Sep 7, 2011
KSS Architects wins AIA NJ design award
The project was one of three to win the award in the category of Architectural/Non-Residential.
| Sep 6, 2011
Construction on Beijing's tallest building starts next week
The 108 floor mixed-use skyscraper consists of offices, apartments, hotels and shopping malls on the lower floors.
| Aug 24, 2011
Deadline Extended: 2012 "Best AEC Firms to Work For” Awards
We’re looking for firms that create truly positive workplaces for their AEC professionals and support staff. In other words, this awards program will recognize those AEC firms that nurture and develop their most valuable asset—their people.
| Aug 19, 2011
How and why AEC professionals choose flooring systems
Design and construction professionals who completed our flooring survey had strong opinions about their preferred flooring type.
| Jul 22, 2011
The Right Platform for IPD
Workstations for successful integrated project delivery, a white paper by Dell and BD+C.
| Jul 21, 2011
Bringing BIM to the field
A new tablet device for construction professionals puts 3D data at the fingertips of project managers and construction supervisors.
