IES 2000			Free Span

		For detailed product specs see our NEW site at http://www.artusaindustries.us Free Span This is the solution for large projects and large building retrofits.

Free Span Acoustical Buildings and Building Treatment

IES offers design, supply and erection of acoustical buildings as well as treatment of existing structures.  We offer our wealth of experience to deliver the most cost-effective acoustical treatment for every project. Our facilities often include:

• acoustical envelope (walls and roof made from acoustical panels or constructed in layers)
• acoustical equipment enclosures
• acoustical ventilation systems
• custom designed silencers (ventilation, gas turbine intake and exhaust, reciprocating engine exhaust, [HRSG])
• acoustical personnel and equipment doors
• acoustical windows and translucent panels
• acoustical barriers
• decoupled acoustical lagging
• other silencing, such as acoustic louvers, plenums, ridge vents, etc.

Uses

A building may need acoustical treatment when inside equipment emits noise beyond required levels. In North America, manufacturers may supply equipment with enclosures designed to meet 75 dBA, 85 dBA or even 90 dBA at one meter (3 feet), based on the regional noise standards. The attenuation level of these standard enclosures sometimes is insufficient, particularly when multiple noise sources exist inside a building. Customized, highly effective acoustical enclosures and or acoustical treatment offered by IES are the solution.

Our structures are effective for noise sources such as:

• reciprocating engines
• turbines
• generators
• compressors
• pumps
• intake and exhaust
• HRSGs
• piping
• fans
• conveyors
• drums
• other interior industrial equipment

 Features

Acoustical Envelope

We call an attenuated building’s walls and roof "the acoustical envelope." For the envelope, mass law theory applies so that thick, dense walls attenuate best. Few walls behave exactly according to mass law where sound transmission through the structure is proportional to the weight and stiffness of the walls and roof. This is because walls aren’t static but move, causing vibrations. A building’s envelope needs to be constructed from materials that both absorb and block sound while reducing vibrations. These materials are acoustical (sound-absorbing) materials, barrier (sound-blocking materials), damping materials, and vibration isolators that comprise our enclosure and building systems.

Breakout Noise Control

Break-out noise transmitted through a duct wall, or through floors or ceilings ..

Break-out noise transmitted through a hole in the wall, a duct wall, or through floors or ceilings with lower transmission loss TL, can dramatically diminish the effect of an enclosure.

Building openings radiate huge amounts of noise. To reduce the amount of interior noise from building openings, IES provides:

• custom designed silencers
• acoustical doors
• acoustical windows
• acoustically lined louvers
• acoustically lined ridge vents
• acoustically lined weather hoods
• acoustically lined plenums

The building is made airtight. Special seals and sealant block noise along joints, penetrations, doors and windows.

Interior Equipment

Acoustical treatment of interior equipment like combustion intake and exhaust ducts and ventilation fans is a cost-effective approach to noise control. Pipe and duct lagging and acoustical plenums are among ways to silence interior equipment noise.