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Acoustical Wall Panel Systems

William L. Shannon, Editor

William L. Shannon, Editor of CISCA

Giving an Airport a Lift

Lindbergh Terminal Rehabilitation, Minneapolis St. Paul International Airport, Minneapolis, Minnesota -- August 1, 1999

The Minneapolis St Paul Lindbergh Terminal Rehabilitation Project is another example of CISCA Members working closely together to complete a demanding, complex interior / exterior construction project.

The owner of the project is Metropolitan Airports Commission, Minneapolis Minnesota.

The interior portion of the project entailed the complete renovation of 117,560 square feet of the main terminal of one of the nations busiest airports.

The original structure was constructed in 1962, and was comprised of a series of folded concrete plates with linear architectural details cast into the face of the facets. Due to acoustical problems the original concrete had been covered with acoustical plaster in 1974. The approach had been less than successful from both aesthetic and acoustical point of view. It called for bold re-design maintaing the original geometry, while dramatically improving the appearance and acoustical performance of the interior terminal space.

To complicate the situation, the new finishes had to be bright, easy to clean, 100% accessible, and installed in a working airport environment, at heights approaching 42&' above the finished floor. Accessibility was critical due to the vast amount of operable equipment maintained in the plenum above the new ceiling.

The exterior portion of the project was equally demanding requiring a 100% accessible metal tile ceiling under 40,560 square feet of the raised portion of the building where new moving sidewalks were being installed. Not only was accessibility a factor, the space had to provide a significant R-Value to protect the equipment from traditionally frigid Minnesota Winters, and perform according to stringent wind load criteria developed by the airport authority.

The architect for the project, Architectural Alliance, Minneapolis Minnesota called upon CISCA Member, Jim Tegan of Tegan Marketing to help out. The architect&'s project manager was David Thorp, AIA and the partner in charge, Dennis LaFrance, AIA. The goal to provide suggested materials and details to meet the unique demands of this project in a manner never before utilized in North America.

After lengthy consideration, submission and re-submission of various samples and details, the architect selected a custom Hunter Douglas Aluminum Plank System. The system employed a skip perforation pattern to mimic the original cast in place concrete horizontal banding. The aluminum system offered acoustical control with factory applied non-woven acoustical mat material, popular in Europe for many years. As an aluminum product, the plank system was lightweight and non-corrosive meeting two more of the projects requirements.

The exterior portion of the project required additional sample submissions, and more detailed review of the attachment techniques, finishes, thermal performance and physical testing of the wind load characteristics by an independent laboratory. The result was an affordable yet high performance system.

The architect wisely required single source responsibility for the systems, and Tegan provided detailed performance specifications to assure a clear understanding, and delineation of responsibilities.

The installation contract was awarded to CISCA Member, Twin City Acoustics of New Hope Minnesota. Their project manager was Dave Brinker. Tegan worked closely with Twin City Acoustics to coordinate the details for attaching the Hunter Douglas System directly to the structure, utilizing custom aluminum extrusions at the ceiling transition points and folded ceiling plates.

The 15 person crew from Twin City Acoustics worked on the project from May through November 1998. They developed creative and unique methods to remove the old acoustical plaster where the extrusions and fasteners had to be placed into existing concrete. The plaster removal had to be accomplished with no "fall-off" to the occupied floor below. Unique baskets were developed to catch the "fall-off" material as custom-made tools were removing it. This had to be accomplished with no dust penetrating areas below the new ceiling.

This project is another excellent example of how "CISCA Members work with CISCA Members". From the Independent Manufacturers&' Representative, Tegan Marketing, through the CISCA Manufacturer Member, Hunter Douglas Architectural Products to the CISCA Contractor Member, Twin City Acoustics, the professionalism & code of ethics promoted and employed by CISCA Members was apparent.

CISCA publications, Ceiling System Handbook and Acoustical Ceilings, use & practice were referenced in the project specifications.

The project resulted in a winning entry for the 1998 CISCA Construction Excellence Award, and is the latest in a series of high profile projects where the work of an Independent Manufacturers&' Representative helped to create a profitable opportunity for members our industry.

Note; a significant portion of the text and information for this article was furnished by Tegan Marketing and Hunter Douglas Architectural Products, and was contained in their winning submission for the 1998 CISCA Construction Excellence Award.

William L. Shannon CSI, CISCA
President of Shannon Corporation
Recipient of the 2004 De Gelleke Award

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