Safety That Stay Calm WithOptimizes Performance & Keeps The Noise Down
50db Sound Attenuation
Acoustic Glass Professional planners and architects need to select appropriate glazing solutions for commercial buildings. With the various factors that have to be considered in selection, this could be a daunting task, such as meeting the original design concept, the solar, optical and acoustical performance requirements. Glass has been known to be a poor sound attenuatorby property, but with technological combinations of various glass types and acoustical frames, sound can effectively be reduced even up to 50dB, intelligently.
Glass As A Sound Barrier Glass used in building construction provides substantial benefits. To optimize the acoustical performance of glass for specific applications, the points to be considered are the mass, stiffness and damping characteristics. The only effective way to increase performance is to increase the thickness, because stiffness and damping cannot be changed. Commercial buildings use a wide variety of glass types, which may enhance solar control and safety performance. Monolithic glass will provide the lowest acoustical performance levels. Laminated glass can provide higher acoustical performance levels than monolithic glass due to the sound damping characteristics of the polyvinyl butyral (PVB) interlayer used to permanently bond the glass plies together. And, insulating glass tends to provide the highest STL potential of any glass product due to the versatility of the product and its ability to combine monolithic and laminated glass plies.
How Sound Penetrates Sound transmission can occur through various sources other than glass or windows. The complete building envelope has to be considered as sound may be transmitted through many components of a building structure and this transmitted sound may be absorbed in varying degrees by other components of the building. Another condition that can occur in building construction is sound flanking where sound from one side of an acoustical barrier can find alternative routes through pipes, HVAC ducts, electrical conduits, outlets, plumbing, drains and wall vents.
Notes: Pyrolytic Solar Reflective Glasses can be assembled with coating outside or in contact with the air cavity (surface #1 or #2). For Low E or Solar Low E whether Pyrolytic or soft coated the coating will have to be in surface #2 or #3 of the unit to take advantage of the Low E characteristic. For units with Polycarbonate, the compatibility of sealants with Polycarbonate is to be confirmed. Glass shapes shall comply with insulating process requirements.
Ideal Applications Of Tone Glass Airports High decibel sounds from aircraft take-off and landing can be attenuated in airport terminals, offering passengers clear views and noise control for a peaceful transitional experience during their travels.
Hotels Hotel buildings can make effective use of Tone Glass to match their safety and noise control requirements between busy traffic circulation areas and high noise level locations, offering visitors a confortable and serene experience.
Recording Studios The application of Tone Glass in music and recording studios supports the external environment more than the internal, in the fact that it prevents the noise levels from leaking out, so as to cause negligible disturbance to nearby office/residential locations.
Other Acoustic Applications As per requirement, Tone Glass can be configured to meet the most urgent requirements in diminishing noise, like in hospitals - where patient serenity is of importance, or in the case of custom requirements like glass-walled discotheques, etc.
Sound reduction rating
Perceived sound reduction (%)
Glass Type
Single glass 4mm
Double glazing 4/12/3*
Double glazing 6/12/6
Double glazing 6.38**/12/4
10
20
25
57
* 4mm float glass / 12mm air space / 4mm float glass ** 6.38 = 6mm laminated glass
PRODUCT SPECIFICATIONS: TONE GLASS Construction
Double or Triple Glazed Unit
Thickness Range for each Glass Lite
3mm to 15mm
Overall Unit Thickness Range
10mm to 52mm
Width Range of Aluminium Spacer
5.5mm to 24mm
Material Types
Glass-Figured/ Patterned, Clear, Extra Clear, Body Tinted, Solar Reflective, Pyrolytic or Soft Coated Low E & Solar low E (Annealed Heat Strengthened or Fully Toughened), Polycarbonate.
Process Options
1GUs for frames or Structural Glazing, Stepped Glass with 1, 2, 3 or 4 Sided Step, Point Fixing Systems.
Cavity Filling
Air, Inert Gas, Special Gases
Glass Shapes
Any shape with Linear or Curved Edges
Max. Size of Unit
3700mm x 2500mm
Min. Size of Glass
350mm x 180mm
FIELD SALES REPRESENTATIVES We're here to help with design assistance, budget costing, return on investment costing, spec writing and review as well as act as a liaison between architects and glazing contractors. We also work closely with the glazing contractor to offer assistance with initial costs, final pricing negotiations, product information and job site inspections. Just ask. Sezliaise™ Contact ourSales Team for further information and warranties. To fix a consultation or obtain additional literature contact: Ritesh : 91-22-28665100 info@sezalglass.com www.sezalglass.com
Technical Data
Glossary Color Rendering Index (CRI) The ability of transmitted daylight through the glazing to portray a variety of colors compared to those seen under daylight without the glazing. Scale is 1 - 100. For instance, a low CRI causes colors to appear washed out, while a high CRI causes colors to appear vibrant and natural. In commercial glass, CRI indicates the effect the specific glass configuration has on the appearance of objects viewed through the glass. Heat gain is heat added to a building interior by radiation, convection or conduction.
Heat Transfer Methods Heat transfer occurs through convection, conduction or radiation (also referred to as "emission"). Convection results from the movement of air due to temperature differences. For instance, warm air moves in an upward direction and, conversely, cool air moves in a downward direction. Conduction results when energy moves from one object to another. Radiation, or emission, occurs when heat (energy) can move through space to an object and then is transmitted, reflected or absorbed.
Light to Solar Gain Ratio of the visible light transmittance to the Solar Heat Gain Coefficient. A higher LSG ratio means sunlight entering the room is more efficient for daylighting, especially for summer conditions where more light is desired with less solar gain. This ratio is the measurement used to determine whether the glazing is "spectrally selective."
Low-E Coatings Relatively neutral in appearance, low-E coatings reduce heat gain or loss by reflecting longwave infrared energy (heat) and, therefore decrease the U-Value and improve energy efficiency. Current sputter-coated low-E coatings are multilayered, complex designs engineered to provide high visible light transmission, low visible light reflection and reduce heat transfer.
Relative Heat Gain (RHG) The total heat gain through glass for a specific set of conditions. This value considers indoor/outdoor air temperature differences and the effect of solar radiation.
R-Value A measure of the resistance of the glazing to heat flow. It is determined by dividing the UValue into 1. A higher R-Value indicates better insulating properties of the glazing. R-Value is not typically used as a measurement for glazing products and is referenced here to help understand U-Value.
Shading Coefficient (SC) An alternative measure of the heats gain through glass from solar radiation. Specifically, the shading coefficient is the ratio between the solar heat gain for a particular type of glass and that of double strength clear glass. A lower shading coefficient indicates lower solar heat gain.
Solar Energy Radiant energy from the sun having a wavelength range of 300 to 4000 nm, which includes UV (300 to 380 nm), visible light (380 to780 nm) and near infrared energy (780 to 4000 nm). % Reflectance Out - percentage of incident solar energy directly reflected from the glass back outdoors. % Absorptance - percentage of incident solar energy absorbed into the glass. % Transmittance - percentage of incident solar energy directly transmitted through the glass. The sum of percent reflectance out + absorptance out + transmittance = 100%. An additional consideration is emission, or emissivity. This refers to the reradiation of absorbed energy that can be emitted toward both the exterior and interior of the building. Emissivity is controlled through the use of low-emissivity, or low-E coatings.
Solar Heat Gain Coefficient (SHGC) The percent of solar energy incident on the glass that is transferred indoors, both directly and indirectly through the glass. The direct gain portion equals the solar energy transmittance, while the indirect is the fraction of solar incident on the glass that is absorbed and re-radiatedor convected indoors.
Solar/Reflective Coatings Typically, highly reflective coatings that reduce solar heat gain through reflection and absorption. Though very effective at reducing heat gain, visible light transmittance is generally low and U-Values are not as energy efficient as low-E coatings.
Transmittance Percent Percentage of incident ultraviolet energy that is directly transmitted through the glass. Long-termexposure to UV light may result in fabric and pigment fading, plastic deterioration and changes to the appearance of many types of wood.
UV Ultraviolet radiant energy from the sun having a wavelength range of 300 to 380 nm with airmass of 1.5.
U-Value (U-Factor) A measure of the heat gain or loss through glass due to the difference between indoor & outdoor air temperatures. It is also referred to as the overall coefficient of heat transfer. A lower U-Value indicates better insulating properties. The units are Btu/(hr)(ft2)(째F).
WATER WIND SKY
Indian Green Building Council
Member IGBC
EARTH FIRE
DIN EN ISO 9001:2008
SEZAL GLASS LTD. 201/ 202, Abilasha, 2nd Floor, S.V. Road, Kandivali (W), Mumbai - 400 067, INDIA. Tel: +91-22-2863 3383 / 84 / 85 / 86 | Fax: +91-22-2863 3389 / 90 Email: customercare@sezalglass.com | www.sezalglass.com