Highlight Projects

CANADIAN BROADCASTING CORPORATION CENTRE (CBC): TORONTO, CANADA 

This ten story, 1.7 million square foot consolidation of 25 facilities into one, includes several television and radio studios, as well as offices. The three largest TV studios are located on the roof. Noise criteria ranged from NC-45 to as low as NC-12!

Vibro-Acoustics^® was selected by the design-build contractors to select, supply and project manage all the noise and vibration control products for the mechanical systems. In addition to silencers, acoustical enclosures and vibration isolators, extensive high transmission loss (HTL) ductwork was supplied to reduce duct break-in noise to the studios.

A full size mock-up of a typical on-floor mechanical room, AH unit, adjacent office space and distribution ductwork were constructed at Vibro-Acoustics^® facility. Through testing 25 assemblies the low frequency (63 Hz) reduction was achieved in the limited space available.

Vibro-Acoustics^® also supplied architectural acoustical products consisting of metal absorption panels, special spring hangers and 130,000 square feet of floating floors, including extensive quality control testing.

THE GREAT MOSQUE: MECCA, SAUDI ARABIA

Noise control for one hundred 400 ton air cooled chillers was a structural and cost challenge. The very large silencer horizontal splitters spanned almost 20 feet. Vibro-Acoustics® solved the cost problem by designing open web steel joists into the splitters for manufacture in Saudi Arabia. The Egyptian consulting engineer witnessed silencer testing in Vibro-Acoustics® laboratory, including the effect of water absorption during a heavy downpour and proof that painting would not degrade the performance.

KIMMEL CENTER FOR THE PERFORMING ARTS: PHILADELPHIA, USA

Spanning a full city block, The Kimmel Center for the Performing Arts was custom built for the world renowned Philadelphia Orchestra. The concert hall alone seats 2500 and is designed to be acoustically and architecturally adjustable to suit the size and style of performances.

A world class orchestra requires world class acoustics. Vibro-Acoustics supplied the HVAC noise control products to ensure the performance spaces met the specified criteria. Placement of the mechanical rooms directly under both the Concert Hall and the Recital Theater created a noise control challenge. With the close proximity of the mechanical room to these critical spaces, Vibro-Acoustics' Systems Approach to silencer and acoustic plenum selection and lay-out was necessary to meet the stringent specified N-1 criteria.

Vibro-Acoustics supplied a variety of duct silencers ranging from rectangular, elbow, circular, transitional cone, to acoustic plenums. The air handling unit silencers were selected by Vibro-Acoustics to meet the specified criteria at both inlet and discharge. Special attention was given to the air handling units that supplied the Concert Hall which required both a rectangular and an elbow silencer in series. This selection and application saved space and met specified sound power levels.

Bravo!

HAWAII FILM STUDIO: HAWAII, USA

The production stage air conditioning for "Hawaii 5-0" and "Magnum P.I." was not able to operate during filming due to excessive noise. The production of a new TV series required state of the art facilities to keep actors and crew cool while keeping the noise levels ultra quiet.

A new sound stage, the first of a large new complex, measuring 16,500 square feet (110’ x 150’ with 29’ ceilings) required 27,000 cfm of "quiet" air. Vibro-Acoustics^® supplied technical product/system expertise for the NC-20 design, which incorporated oversized round ducts with "special silencing". Using the "Systems Approach" Vibro-Acoustics^® guaranteed and achieved the required acoustic and aerodynamic performance.