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
| Apr 25, 2014
A radiant barrier FAQ: Everything you wanted to know but were afraid to ask
There are many examples of materials developed for the space program making their way into everyday life and radiant barriers are just that. SPONSORED CONTENT
| Apr 24, 2014
Unbuilt and Famous: LEGO releases box set of Bjarke Ingels' LEGO museum
LEGO Architecture has created a box set that customers can use to build replicas of the LEGO Museum, which is not yet built in real life. The museum, designed by the Bjarke Ingels Group, will commemorate the history of LEGO.
| Apr 23, 2014
Ahead of the crowd: How architects can utilize crowdsourcing for project planning
Advanced methods of data collection, applied both prior to design and after opening, are bringing a new focus to the entire planning process.
| Apr 23, 2014
Developers change gears at Atlantic Yards after high-rise modular proves difficult
At 32 stories, the B2 residential tower at Atlantic Yards has been widely lauded as a bellwether for modular construction. But only five floors have been completed in 18 months.
| Apr 23, 2014
Mean and Green: Top 10 green building projects for 2014 [slideshow]
The American Institute of Architects' Committee on the Environment has selected the top ten examples of sustainable architecture and ecological design projects that protect and enhance the environment. Projects range from a project for Portland's homeless to public parks to a LEED Platinum campus center.
| Apr 23, 2014
Architecture Billings Index dips in March
The March ABI score was 48.8, down sharply from a mark of 50.7 in February. This score reflects a decrease in design services.
Sponsored | | Apr 23, 2014
Ridgewood High satisfies privacy, daylight and code requirements with fire rated glass
For a recent renovation of a stairwell and exit corridors at Ridgewood High School in Norridge, Ill., the design team specified SuperLite II-XL 60 in GPX Framing for its optical clarity, storefront-like appearance, and high STC ratings.
| Apr 21, 2014
10 design-build best practices
Design-build requires more than a good contract and appropriate risk allocation, says the DBIA. Everyone from the owner to the subcontractors must understand the process, the expectations, and fully engage in the collaboration.
| Apr 17, 2014
Online mapping tool helps teams determine multifamily project tax credit eligibility
Accounting and advisory firm Baker Tilly has launched a new, interactive online mapping tool that helps users determine if a business or development project may qualify for the New Markets Tax Credit or Low-Income Housing Tax Credit program.
Sponsored | | Apr 17, 2014
Technology enables state transportation agency to make the leap to digital design review
Earlier this month, my colleague and I presented a session to a group of civil engineers and transportation agencies about the tech trends in the AEC space. Along with advice on how to prepare your plan for controlled collaboration, we also talked through some practical use cases. One such use case was especially interesting, as it outlined a challenge not unfamiliar to government agencies who are contemplating the leap from paper to digital processes: how to securely migrate workflows.