Acoustic materials

Acoustic materials Submitted to – Ar. Nirmal Chauhan Submitted by – Mishul Gupta 75186008 B.arch, 5th sem.

Acoustic materials COMMERCIAL and CUSTOM DESIGNED building materials and surface treatment which contribute significantly to acoustical control or to noise reduction.

TYPES OF ACOUSTIC MATERIALS: • Sound Absorbers • Sound Diffusers • Noise Barriers • Sound Reflectors

What is acoustics? “a science that deals with the production, control, transmission, reception, and effects of sound.” it is the science of controlling sound within buildings. The first application of architectural acoustics was in the design of opera houses and NAME OR LOGO then concert halls.

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SOUND ABSORBERS: • These sound absorbing acoustical panels and soundproofing materials are used to eliminate sound reflections to improve speech intelligibility, reduce standing waves and prevent comb filtering.

• Typical materials are open cell polyurethane foam, cellular melamine, fiberglass, fluffy fabrics and other porous materials.

A wide variety of materials can be applied to walls and ceilings depending on your application and environment.

• These materials vary in thickness and in shape to achieve different absorption ratings depending on the specific sound requirements.

TYPES – 1. Acoustical foam panels 2. White paintable acoustical wall panels 3. Fabric wrapped panels 4. Acoustical wall coverings 5. Ceiling tiles 6. Baffles and banners for ceiling 7. Fibre glass blankets and roll

Different type of acoustic materials

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ACOUSTIC FOAM PANELS: • These acoustical foam sound absorbers are used in a wide variety of applications ranging from Recording and Broadcast Studios to Commercial and Industrial Facilities.

• Available in Polyurethane or in a Class 1 Fire Rated foam.

• These products can be applied directly to walls, hung as baffles or used as freestanding absorbers.

• Price – Rs. 280/sqft includes GST

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WHITE PAINTABLE PANELS: • It is a white acoustical wall panel with a soft textured appearance.

• The two foot by one foot dimension provides installers flexibility to mount acoustical panels around existing objects.

• In addition to reducing echo and reverberation, these acoustical panels are used to create unique designs and patterns.

• To customize the look even further, many local printing companies now have the capability to produce an image directly to the face of these panels.

• Price – Rs.850/sqft includes GST

Properties • Quick & Easy acoustical solution • Soft drywall texture appearance • Create unique patterns • Panel size allows for flexible mounting options • Paintable & Printable finish WHITE PAINTABLE PANELS NAME OR LOGO

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CONFIGURATION OF WHITE PAINTABLE PANELS: Construction: 1 " Fiberglass 6 PCF acoustical core + moulded fibreboard + paintable facing.

Resin hardened square edges.

Paintable finish covers face and exposed edges.

Class A rating per ASTM E 84 Panel Size: 2' x 1' (24 inches by 12 inches) Thickness: 1-1/8" Quantity per box: 10 panels Cost: Rs. 320/sqft

WHITE PAINTABLE PANELS

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FABRIC WRAPPED PANELS: • Acoustical sound panels utilize 6-7 PCF glass fiber material for maximum absorption.

• Available as wall panels, ceiling tiles, hanging baffles, acoustical clouds and bass traps, with more than 50 standard colors to choose from, these materials will look as good as they sound.

• The standard sizes and configurations best maximize raw materials, however, many of these products can be customized to meet specific requirements should you need material sized to fit or other finishes or coverings.

• Price – Rs.500/sqft

DIFFERENT FABRIC WRAPPED PANELS

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ACOUSTIC WALL COVERINGS: • Acoustical wall fabric is a multidimensional fabric that offers excellent acoustical properties, unmatched fade resistance, and a fire/smoke retardant class A rating.

• Sound channels is resistant to moisture, mildew, rot, bacteria, and is non-allergenic. Produced with no voc’s (volatile organic compounds), ods’s (ozone depleting substances), heavy metals or formaldehyde, it's the perfect acoustic fabric for offices, classrooms, conference centers or any area where speech intelligibility is a critical factor.

Installation: • This material is not factory trimmed. It is necessary for the installer to cut a straight vertical edge • Following the ribbed pattern. All edges must be butt joined. Do not overcut edges. Cut material to • Desired lengths, allowing for top and bottom trimming. Wall carpet should be hung • Straight up. Do not alternately reverse strips.

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• Apply a premixed heavy duty adhesive directly to the wall, allowing it to dry.

• Without it being overly dry. (Important!!! Adhesives are ready mixed. Do not dilute) • Adhesive and do not apply adhesive to the back of the wall covering).

• Please be sure to follow instructions as provided by the adhesive manufacturer.

• Price – Rs. 220 – 500/sqft

ACOUSTIC WALL COVERINGS

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ACOUSTIC CEILING TILES: • Cloudscape® Ceiling Tiles absorb noise and block sound transmission.

• These ceiling tiles are designed to fit into existing 2' x 2' suspended drop tile ceiling grid systems.

• They may also retrofit in a 2' x 4' ceiling grid by installing cross tees. Cloudscape® ceiling tiles may also be ordered as a full 24" x 24" size, un-backed for adhesive mounting directly to walls or ceilings.

• Ordinary ceilings take on new levels of visual excitement with these sculptured tiles.

• They are available in five different patterns plus a non-patterned look to enable you to "mix and match" for your own designs.

• Price – Rs.100 – 400/sqft

ACOUSTIC CEILING TILES

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BAFFLES & BANNERS: • Baffles and Banners are designed to solve acoustical problems economically in any large cubic volume space such as arenas, gymnasiums, theaters, restaurants, and auditoriums.

• Reverberation times that range from 4 to 9 seconds can be reduced to 1/2 to 2 seconds.

• Speech intelligibility is greatly improved and sound intensity levels are reduced simultaneously by 3 to 12 decibels.

BAFFLES: • Baffles are an economical way to reduce sound pressure levels and lower reverberation times in large spaces such as gymnasiums, theaters, restaurants, healt h and fitness clubs, etc.

• Reverberation times can be lowered from a RT60 of 4 - 9 seconds down to a RT60 of 0.5 - 2 seconds.

• Speech intelligibility is greatly improved and sound intensity levels can be simultaneously reduced by 3 to 12 decibels.

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• These baffles are easily suspended from existing open truss and preengineered suspension systems.

• They are designed to hang in a vertical fashion, allowing free flow of air and integrate exceptionally well with existing sprinklers, lighting and HVAC systems.

• Price – Rs. 300 – 850/sqft BANNERS: • Speech intelligibility is greatly improved and sound intensity levels can be simultaneously reduced by 3 to 12 decibels.

• Banners are suspended from ceilings, bar joists or pre-engineered suspension systems. They are designed to hang in a horizontal or in a catenary fashion using edge stiffeners or deck mounted flat with washer plates

BAFFLES & BANNERS

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SOUND DIFFUSERS: • These devices reduce the intensity of sound by scattering it over an expanded area, rather than eliminating the sound reflections as an absorber would.

• Traditional spatial diffusers, such as the polycylindrical (barrel) shapes also double as low frequency traps. Temporal diffusers, such as binary arrays and quadratics, scatter sound in a manner similar to diffraction of light, where the timing of reflections from an uneven surface of varying depths causes interference which spreads the sound.

• Price – Rs. 1200 – 2500/sqft.

SOUND DIFFUSERS

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SOUND BARRIER: • Sound barrier materials are used to reduce the transmission of airborne sound.

• The Block Aid® series of products include the standard one pound per square foot non reinforced barrier, transparent material when observation or supervision is required, reinforced vinyl to create a hanging barrier partition.

• Price – Vinyl Noise Barrier(3MM) – Rs. 175/sqft

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Some other acoustic material Mineral wool • Acoustic Mineral Wool is a Rockwool type product supplied in a density to give maximum sound absorption when loosely installed between cavities of floors, walls and ceilings.

• Acoustic Mineral Wool (AMW) is used extensively in buildings and throughout industry to give acoustic, thermal and fire insulation.

• Sound Absorbing Acoustic Mineral Wool Panel, for Sound Absorbers, Rs 2500 /piece

Mineral wool

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Plaster • Acoustic plaster is plaster which contains fibres or aggregate so that it absorbs sound.

• Early plasters contained asbestos, but newer ones consist of a base layer of absorptive substrate panels, which are typically mineral wool, or a non-combustible inorganic blow-glass granulate.

• Price – Rs121/kilogram.

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Wood wool • The open material structure reduces sound reflections and makes BAUX Acoustic Wood Wool a good sound absorber.

• The material dampens noise and contributes to restful acoustics in residential buildings, industrial premises and public spaces.\ • Price – Rs 500/per sheet • Dimensions: As per customer requirement • Usage: Sound Diffusers • Quality: Excellent quality • Size: 2440*1220, 1200*600, 600*600 mm • Thickness: 15-25 mm •

Wood wool

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Velvet • Velvet. Velvet has a plush vertical fiber that is both transparent and absorbing.

• Available in multiple colors, in standard widths of 45”, it is better as curtain than for wrapping acoustic panels. Look for thicker and heavier cloth; it will provide better sound treatment.

• Price – Rs 100/square feet • Usage/Application: Sound Absorbers • Brand: Phoenix • Finish: Color Coated • Material: Fabric • Thickness: 10 mm

Velvet uses

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Polycarbonate sound barrier • Polycarbonate sheets are very lightweight and often installed on any solid flames including aluminum, steel, plastic, wood or other materials. Compared with conventional concrete sound barrier, polycarbonate significantly decrease installation time and project cost.

• Price = 10500/square metre Material Thickness Light Transmission Fire Rating Noise Reduction

Polycarbonate Sheets 15 mm 79% as per DIN5036 class B2 as per DIN 4102 & Class 1Y as per BS 476 part 7 DIN EN ISO 717-1 - 36 dB

Polycarbonate sound barrier

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Felt Felt made from PET plastic (Polyethylene Terephalate, or recycled plastic water and soda bottles) has leapt into the spotlight as a 'go-to' material that absorbs sound while offering a new palette for both visual and acoustic design.

As with all materials, not all PET plastic felt is created equal.

Price = Rs 80/square metre Material Color Pattern Brand Thickness Density

POLYESTER White Roll R. P. Industries From 1 mm to 100 mm.

8kg/m3 to 60 Kg/m3 ( Polyester Based)

Felt NAME OR LOGO

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Acoustical Design Relationships • • • • •

Site Location Orientation Planning Internal Layout

Acoustical Design “Proper acoustical planning eliminates acoustical problems before they are built”

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Site • Match site to application • Match application to site • Factory: • Close to RR/Hwy • Concert Hall: • Use building as isolator • Distance from noise

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Location • Take advantage of distance/barriers

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Orientation Orient Building for Acoustical Advantage Note: Sound is 3-dimensional, check overhead for flight paths

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Planning Consider Acoustical Sensitivity of Activities

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Thank You! Mishul Gupta 75186008 B.arch, 5th sem. mishulgupta2000@gmail.com

REFEENCES •

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https://www.google.com/search? q=ACOUSTIC+MATERIALS&tbm=isch&ved=2ahUKEwidh7q_pZHsAhXoGLcAHd_CCVYQ2cCegQIABAA&oq=ACOUSTIC+MATERIALS&gs_lcp=CgNpbWcQAzIECCMQJzIECCMQJzICCAAyAggAMgI IADICCAAyAggAMgIIADICCAAyAggAULOAAVizgAFgn4QBaABwAHgAgAHCAYgBwgGSAQMwLjGYAQC gAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=ZrF0X528Lix3LUP34WnsAU&bih=610&biw=1263&rlz=1C1SQJL_enIN856IN856&tbs=isz%3Al&hl=en-GB&hl=enGB#imgrc=gnhCXkkACh2COM https://www.slideshare.net/jasvinderkaur46/acoustic-materials-131748304 https://www.slideshare.net/mobile/shahzeb163/acoustical-materials https://www.slideshare.net/SarthakNaikya/acoustic-material-131646197

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