acoustic insulation Articles

  • Acoustic and Insulated Sheeting

    Powerclad Acoustic and Insulated sheeting systems are insulation materials laminated to scaffold sheeting for temporary weather protection and containment applications. Powerclad provides an effective system for controlling noise on construction sites and conditioning the working environment in both hot and cold climates. The Flame Retardant grades are ...

  • A new and improved courtyard at Wynberg Girls High School in Cape Town with Geoplast Drainroof - Case Study

    Drainroof, Geoplast’s solution for roof gardens made of recycled low-density propylene, was recently chosen for alterations at Wynberg Girls High School in Cape Town. Noero Architects, a prestigious architectural firm with offices in Cape Town and Port Elizabeth, conceived and supervised the project, while Abrach Construction carried it out. De Villiers & Hulme participated as ...


    By Geoplast US Corp.

  • Enhanced acoustic material testing in a tube

    Demands from the Industry   A growing number of customers demand quieter vehicle cabins, and cabin acoustic comfort has become a major concern for the automotive industry. Optimization of the acoustic insulation performance has, therefore, been given a more prevalent role in the design process. In the aircraft industry, acoustic comfort for customers and the use of new, lighter ...

  • Case study - Finding acoustical weak points in room dividing modular walls

    Problem A conference hotel is using modular walls to divide large halls into several smaller conference rooms. The rooms are divided by modular walls that provide several different opportunities for subdivision and multipurpose use of the large area spaces. When measuring the sound insulation between adjacent rooms through the modular walls, the resulting value was found to be too ...


    By Norsonic AS

  • Case study - Wall leakage testing in the lab with acoustic camera

    Problem Facade insulation testing is usually performed by using a loudspeaker in the sending room, and record the sound pressure level (SPL) with microphones in both the sending and receiving room. The difference in SPL adjusted for the size of the dividing wall element will then give an estimate of the sound reduction quality of that element. However these measurements will not say ...


    By Norsonic AS

  • Does my site, house, or flat need a sound test? Sound Insulation Testing requirements.

    Approved Document E:  Resistance to the passage of sound’ governs the sound testing requirements for newly built, and refurbished dwellings, as well as newly-built and refurbished ‘rooms for residential purposes’ (e.g. hotels, student accomdation) constructed since 2003.  (link here: ...


    By Acoustic Tests

  • Regenerative Thermal Oxidizer Installation #1369 - Case Study

    Acoustical Insulation Manufacturer in Holliston, MA An Acoustical Insulation Manufacturer adds pollution control with the help of Alliance Corporation. Application: Coating – Holliston, MA Project: A 6,000 SCFM KRONUS™ Regenerative Thermal Oxidizer. Installed by ...


    By Alliance Corporation

  • GKN aerospace success with portable impedance meter

    The GKN site in Cowes, Isle of Wight, UK, has long experience in the design and manufacture of passive sound insulation systems for air-intakes and by-pass ducts of aircraft engine nacelles. Dr. Armando Vavalle, Technology Development Engineer from GKN reports here on impedance tests conducted with Brüel &Kjær’s Portable Impedance Meter Type 9737 for the development of such ...

  • Case study - Filming sound leakages in highly reflective office environment

    Problem A newly built office complex is designed with glass facades between the offices and the hallway. The glass facades include a glass door. Although the glass structures themselves have a sufficient sound reduction value, the sound insulation between office and hallway was measured at 19 dB, which was far below the sound insulation criteria for offices given in the regulations. It ...


    By Norsonic AS

  • A study of the coincidence effect and critical frequency of a dash panel using the hybrid FEA–SEA and experimental methods

    This paper provides a new method to determine critical frequencies of any engineering structures by identification of peak frequencies of their internal damping loss factor curves. The novelty embodies the following aspects: first, the indirect method was applied to measure the critical frequencies of large complex thin–walled panels; second, the hybrid FEA–SEA was applied to analyse the sound ...


    By Inderscience Publishers

  • Shanghai International Gymnastics Center case study

    223’ (68 m) diameter CST Covers Aluminum Dome and matching lower facade National and international gymnastics competitions The 4,000 seat gymnastics center/arena was built for the eighth National Games of the People’s Republic of China. The mill finish CST Covers Aluminum Dome roof is engineered to support 45,000 kg or 100,000 pounds of sound cloud and catwalk loads. The ...


    By CST Industries Inc

  • Elements for a Position Paper on Night-Time Transportation Noise and Sleep Disturbance

    The EU Directive on the Assessment and Management of Environmental Noise (END) specifies Lnight as the indicator for sleep disturbance. This report presents relationships between Lnight and sleep disturbance for transportation noise. These relationships can be used in a position paper on relationships between Lnight and sleep disturbance for transportation noise by the working group 'Health and ...


  • Case study - Identifying low-frequency tonal noise in windy and noisy conditions

    Problem A large LNG gas facility (approximately 300m x 150m) producing 300 000 tons of LNG annually is situated in a terminal area with the nearest populated area at a distance of around 1 km. Within the gas production facility, a low-frequency tonal noise at around 500 Hz is generated causing complaints from nearby neighbours. The tone imposes a more stringent noise requirement on the ...


    By Norsonic AS

  • Case study - What is asbestos?

    Asbestos is the name for a group of naturally occurring silicate minerals that can be separated into fibers. The fibers are strong, durable, and resistant to heat and fire. They are also long, thin and flexible, so that they can even be woven into cloth. Because of these qualities, asbestos has been used in thousands of consumer, industrial, maritime, automotive, scientific and building products. ...

  • Case study - Measuring impact of traffic noise in apartment living room

    Problem An apartment on the ground floor of a two story house in the city lies close to a busy road. The living room in the apartment is facing the road, and the inhabitants are bothered by traffic noise, especially in the morning and the afternoon, when the traffic is the heaviest. Traffic noise could be clearly heard when standing in the living room. The facade facing the city ...


    By Norsonic AS

  • Case study - Pinpointing low level sanitary noise in apartment building

    Problem A newly built apartment building consists of several floors with multiple apartments on each floor. One of the ground floor apartments is disturbed by sanitary noise from the apartment above, which is heard whenever the toilets in the top apartment are being flushed. The sanitary noise is heard in several rooms, and the level was measured to be around 30 to 35 dB, which is above ...


    By Norsonic AS

  • Solid Waste Reduction: Insulform Pty Ltd

    Insulform Pty Ltd is a medium sized Melbourne based company that manufactures trim and insulation components for the automotive industry. Reformulation of the raw material and the process used to manufacture rear parcel shelves for passenger vehicles has resulted in significant cost savings, with reduced price to the customer, and the elimination of a significant solid waste stream. ...


  • What is asbestos?

    Asbestos is the name for a group of naturally occurring silicate minerals that can be separated into fibers. The fibers are strong, durable, and resistant to heat and fire. They are also long, thin and flexible, so that they can even be woven into cloth. ...

  • Composite construction products from waste tyres

    The construction industry consumes approximately 420 million tonnes of products per year, and therefore utilises large quantities of raw materials. Alternatives to primary materials in construction products are already widely used; examples include the use of construction and demolition wastes as aggregates, timber wastes in composite board products and by-products from steel-making in the ...

  • The mills grind efficiently

    The – “Milser Mühle“ – has relied on AERZEN for 50 years When the Borgstedt Family took over the Milser Mühle 130 years ago, at first, it only produced feed material, and then, from 1918, it started to produce flour for human food. “Therefore we selected oilfree compressing AERZEN Positive Displacement Blowers of series GM as conveying air producer ...

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