Oitc glass stc rating. STC Ratings - Tuscany Due to continual .

Oitc glass stc rating components. Glass 3 Spacer STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. Notably, road noise is a lower frequency sound, so depending on the proximity to busy streets and interstate highways, it is important to consider the OITC rating and look for higher numbers. 3-08 Rev H 02/16 Superior Sound Control Sep 4, 2018 · The OITC rating, established in the ‘90s, is newer to the industry and is often overlooked in favor of the STC rating. CrystaLite standard skylights featuring 1” IGU (Temp / Lam) units have an approx. In fact, dual-pane windows with dissimilar glass can achieve STC ratings nearly as high, if not as high, as triple-pane or laminated glass. OITC (Outdoor-Indoor Transmission Class) is a more modern and “real world” test that includes sounds on the lower end of the spectrum, from 80 to 4000 Hz. OITC* Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 The definitions of two ratings: Sound Transmission Class or STC and Outdoor-Indoor Transmission Class or OITC; The project’s design requirements and how they impact the glazing system, and; How to calculate an STC or OITC rating; STC versus OITC. In our recent tests, an annealed IGU was used as the primary window and was tested. STC and OITC are standards that measure sound attenuation. The figures in Column 3 for theA-weighting adjustments are taken from ANSI S1. 02-113-11-R1 Rainfall: G3302. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. 125 x 47. (2) The higher the level, the greater the product's ability to resist forced entry. Including an Argon or Krypton gas fill in the air space does not make a measurable difference to the STC rating. 50003 659. glass constructions only. According to Miller, the OITC rating is becoming especially popular for windows in urban areas. To achieve these ratings and above, a dual window configuration with two sets of sash or a prime window with an exterior or interior storm panel . G. Ratings achieved at that size are representative of all sizes of the same configuration. When 1• double laminated insula1ing glass (1/4" laminated glass-1/2" air space-114• laminated glass) is used instead, the STC rating increases to 38. One US glass manufacturer who has Jun 20, 2023 · Check out this post from Aeroseal to learn what you need to know about STC & OITC ratings and how they impact your commercial property. Suite 100, Charlotte, NC 28217 PM-6. 03. What Is an OITC Oct 10, 2024 · OITC and STC are almost the same rating system except that OITC is geared for testing lower frequencies. The OITC covers a wider range and lower frequency than the STC. 175mm 3. Other ratings may be computed using the same worksheet subsituting the appropriate data for the rating instead of the sound transmission loss. 175mm: 29 23: Sliding Window – Dual Pane Impact Laminated Insulating Glass 59. This is different from the rating of that same glass once included into a window frame. STC ratings have been determined from TL data using ASTME413 Laboratory measured STC and OITC ratings for various glass configurations. 06 m W* n 0 792 612 Windows and doors can help block outside noises whether you live in the city or on a farm. Our recording studio windows and doors have STC 60+ ratings. Confirm ratings for Glass 1; Glass 2 STC; EWR OITC; Test Number horizontal slider; single hung picture window (slider frame) 6310 6311 6331 6331J 6370. Ensuring your building meets the proper project and building code requirements for STC, OITC, and IIC sound ratings can ensure that your building's space offers an environment that will be comfortable for occupants and not generate complaints. insulating glass units. STC ratings are used for windows, doors, walls and most building materials. Jan 11, 2025 · In the building products industry, there are two main rating systems used to communicate how well products block sound: Sound Transmission Class (STC) and Outdoor/Indoor Transmission Class (OITC). 01-113-11-R1 Rainfall: G3302. STC indicates how well an interior wall, exterior wall, door, window, or floor blocks noise. OA Glass 1 Glass 2 Acoustical Ratings - Ultra I C650 updated 04. gaskets/sealants, insulating glass unit spacer and sealants, and possibly interlayers. ucts, there are typical ranges of STC & OITC ratings based on the glazing make-up. Test Date; Test Number. Higher numbers show greater sound resistance. When it comes to age, STC is much older than OITC. How Does STC Differ From OITC? OITC stands for outside-indoor transmission class. size tested Glass 2 STC; OITC. 100 635 Christina Mediastika et al. Test Date; Test Number 8120 8130 8170. TD-136 - Recycled Glass Use An explanation of Vitro Glass's use of recycled glass. best fits the data gives the STC rating. OITC Ratings. File Name: STC Ratings - Trinsic Due to Apr 8, 2024 · Sound Transmission Class (STC): The higher the STC number, the more efficient a window is at blocking outside noise. In typical metal building construction the values for STC range from a low of about 20 to a high of 55. Unlike thermal Aug 8, 2022 · 4. An intelligent window can do more than you would think. Glass size and glazing system will affect STC rating. * May 30, 2024 · STC is a widely recognized measure for sound insulation in windows and doors, focusing on human speech frequencies. For windows, STC ratings range from 18 to 38. E413-87 in an acoustical wall. OITC Rating. com www. There are two common measures of sound performance that you’ll come across: STC and OITC. To determine the specific STC ratings of glass and a May 22, 2022 · What is an OITC Rating? OITC stands for Outdoor-Indoor Transmission Class. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical wall. The acoustical performance of windows and doors is influenced not only by the glass but also by the framing members and construction of the window assembly. 12-113-11-R1 STC RANGE 36 - 45 Roof Membranes Unless otherwise indicated, all tests have been completed to be membrane agnostic. One can expect that new norms will much more resemble the OITC approach. size tested. OITC, on the other hand, covers a broader frequency range (80 to 4000 Hz), including lower frequencies often associated with external noise. Explore noise reducing windows and doors from Pella. When planning an isolation project, the OITC rating is often more crucial than the STC rating. NWTL140828-03 STC 40 Assembly Components Finish material 1/ The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. The same process is used to determine STC ratings for doors. This is because of the inclusion of the 80 and 100 Hz frequencies in the OITC calculation. The performance data below applies to an insulating unit constructed with two plies of glass and an air or argon filled space. 0024 greenfiber. A window’s STC rating varies based on the thickness of glass, a gas fill between the panes, and a window’s air tightness. Mass pigmented and decorative interlayers can also be used to provide a wide range of effects. STC Reference Contour 1/3-Octave Band [Hz] 125 Sep 24, 2023 · Materials are given an STC rating in a lab testing environment, where sound waves are measured at different frequencies on both sides of the material. What Is a Good OITC Rating for Windows? Windows are typically the weakest part of a building assembly when it comes to acoustics, which is why you’d want to know the OITC rating. When a person speaks, a car passes by or a glass is dropped to the floor, vibrations from the vocal cords, running engine or glass impacting the tile respectively, are set into motion in the surrounding air. If a 105-decibel above ground subway only registers as 80 decibels after traveling through a Window or wall, the sound experiences a 25-decibel deficit. Jul 30, 2024 · The Outdoor-Indoor Transmission Class (OITC) rating, calculated according to ASTM E1332, measures the capacity of a window or door to reduce the transmission of exterior noise to the interior of a building across the frequency range of 80 to 4000 HZ. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. The final STC/OITC rating of the window assembly will typically be reduced from the base glass acoustical Nov 25, 2022 · The difference between the sound level inside the window and the sound level outside the window, measured in decibels, is the STC rating. Aug 21, 2024 · STC ratings range from 0 to 100. Test Number. Our secondary window STC ratings range from STC 48 to STC 57. 11-113-11-R0 STC/OITC:37 G3302. May 14, 2021 · Choose glass thickness-laminated glass or single glass (interlayer or no interlayer)-Cavity/Spacer (1mm-30mm)-Gas Filling (Air/Argon/Krypton) laminated glass or single glass (interlayer or no interlayer)-Predict-Value Type (RW/STC/OITC Data)-Results Download Laminated architectural glass can be fabricated using various glass types, including low-e, clear, low-iron, tinted, reflective, patterned or wired glass to achieve desired aesthetics or to improve solar control and thermal performance. Be aware that laminated glass fabricators publish acoustic data on “glass-only” prototypes based on testing loosely supported lites without framing. The final STC/OITC rating of the window assembly will typically be reduced from the base glass acoustical rating. For example, if the transmitter played a sound at 60 decibels and the receiver picked up 30 decibels, the STC rating would be 30. OITC (Outdoor-Indoor Transmission Class) measures outdoor-to-indoor sounds, like traffic, airplane noise, and construction. Acoustical Guide – Determining Minimum STC Rating Figure 1. Single-pane units typically earn ratings between 26 and 28, while double-paned ones often range between 26 and 33. Performance targets are selected based on acoustic ratings, and results are revealed immediately. This is very similar to dropping a rock into a calm lake. See additional notes below data for specific Jan 11, 2025 · The result is sound control over a greater range of frequencies and a significantly higher Sound Transmission Class (STC) rating than a window with standard dual-pane glass. Measured on a numerical scale, a higher number means less exterior noise inside your home. 2 This classification requires data in one-third octave bands from 80 to 4000 Hz of sound transmission loss (TL) for outdoor-indoor transmission class (OITC), outdoor-indoor noise reduction (OINR(θ)) for outdoor-indoor noise isolation class (OINIC(θ)), or other data based on the rating definition for other ratings based on this classification. Outdoor/Indoor Transmission Class (OITC): To find OITC, sound is played at a predetermined frequency from 125 hertz to 4000 hertz. info@greenfiber. 751 614 -426. Nov 5, 2024 · Studies have shown that the STC and OITC ratings can change by up to five and three dBA, respectively, over a glass temperature range of 15 to 32 C (60 to 90 F). 24 Page 1 of 7 Professionals use the OITC rating System less frequently than the STC rating System. 1 2024-01-15 Prod Perf-2 11708532 Architectural Detail Manual Certification and Code Information Marvin meet or exceed the following industry and federal performance standards Oct 14, 2014 · interior window retrofits, laminated glass windows, oitc, sound control windows, sound ratings, stc Comments are off Sound ratings were developed by the American Architectural Manufacturers Association (AAMA) and the American Society for Testing and Materials (ASTM) to standardize the testing and rating of sound transmission for building Oct 14, 2014 · interior window retrofits, laminated glass windows, oitc, sound control windows, sound ratings, stc Comments are off Sound ratings were developed by the American Architectural Manufacturers Association (AAMA) and the American Society for Testing and Materials (ASTM) to standardize the testing and rating of sound transmission for building Nov 4, 2016 · In only a handful of cases were the glass-only results the same as the whole-window results. STC Ratings - Tuscany Due to continual STC Lab Test Results 1/8" single pane glass Tested at various air spacing between the test glass and a Soundproof Window 27 STC Test Glass - STC Test Result Range: 43 52 40 50 60 70 T ransmission Loss (Db) SOUNDPROOF WINDOWS®, Inc. Available nationwide. 17. While both are effective, it’s important to apply ratings to the right scenarios to provide the highest level of occupant comfort: An STC rating is often sufficient for a project that is soundproofing walls between offices E413-87 in an ac oust ical wall. Check out this guide for more info. The glass to exterior ratings, when tested to ASTM E1425 and ASTM E90, shall not be less than STC 38 and OITC 31. It is calculated based on ASTM E 1332 using sound transmission loss data measured between 80 – 5000 Hz. Glass size and glazing system will affect STC rating. STC rating was developed to asses several different types of barriers, such as doors, partitions, windows, and both interior and exterior walls. Calculated by using the sound transmission loss values in the 80 to 4000 Hz range as measured in accordance with ASTM E-90(09). -114• glass) with an STC rating of 34. 08-113-11-R1 Rainfall: G3302. 4. What is a good OITC rating for windows? So, OITC is the ideal measurement for Peerless acoustic windows & doors. A good OITC window rating is 30+ and usually comes with thicker glass (½” or more) and How the OITC Rating is Measured. Pim OITC Test Date Test Number size tested 6040-- - Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name The higher the STC rating, the better the glass is at reducing noise transmission through walls and partitions. STC (Sound Transmission Class) measures indoor sounds, like people talking, TV, and music. Widely used STC (Sound Transmission Class) measures frequencies from 125 Hz to 4000 Hz. Sep 21, 2018 · When looking at STC ratings for windows and doors be aware that the glass manufacturers publish values for the glass they produce. As you can see, 1” dual-pane glass has the same STC rating as a single pane of acoustic glass. For both measures, the higher the Oct 16, 2023 · acoustical ratings not available for this glass combination glass combination X--> X 30 27 04/12/23--> X 34 29 12/14/22 OITC Test Date Test Number Intercept or Cardinal horizontal slider 6110 6111 6130 6130J 6170 size tested net 59" x 47" STC 29-34 X X <--32 Operating Style Series Numbers Glass 1 Glass 2 Spacer STC TL22-271 28 12/14/22 TL22-270 The STC measurement has been around since 1961, so for a long time, that was the only rating to measure how windows performed acoustically, in 1990 the OITC measurement came about as a way to rate outside noise. Introduction and Product Performance for Elevate/Essential Ver 2024. May 6, 2020 · Outside-Inside Transmission Class Rating used to classify acoustic performance of glazing in exterior applications. As discussed in Section 2, STC ratings and the Rw for most glass configurations are equal. 5” Acoustics Assembly Number: ISS-02 STC: 43 OITC: 28 Report No. 800-782-5742 Talk to an expert! Nov 25, 2022 · The difference between the sound level inside the window and the sound level outside the window, measured in decibels, is the STC rating. See Design Data pages in this section for specific product performance class and grade values. However, if low frequency sounds like a neighbor’s bass-heavy music or planes flying overhead cause the most disruptions in your home or office, you should consider the OITC rating for any interior or exterior barrier Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Trinsic I V300 updated 04. 250: 7/8" 3. PDF-1. All data presented is for glass-only testing. The STC rating has been in existence for many years and is based on speech sounds. STC ratings for sound-reducing windows begin at about 32. to provide conservative estimates of required STC or Rw ratings to be used by the building designer as a planning tool for window glazing. 6. 22. Glazing I. As the rock impacts the surface of the water Weighted Sound Reduction Index (Rw) and Exterior Wall Noise Rating (EWNR). *OITC is estimated based on this test. A receiver on the 800. After sealed IG units were installed into the laboratory test opening, the first glass panel and wood spacers were used to complete the triple glass configurations. Anything over 40 is fine, but 50 and above is considered a good STC rating. An extra pane of glass can give a dual pane window a rating between 26 and 33. While STC and OITC ratings are published for various glass configurations, accurate ratings for the glazing system can only be determined by The enclosed STC and OITC data is for insulating glass constructions only. Acoustic and Thermal Performance SoundPro calculates glass usage by performance or glazing configuration. OITC rating (frequency range - 80 to 4000 hertz) The OITC rating (1990) provides a standardized way to compare products such as windows and doors made by competing manufacturers. minimum STC rating of 35. Assemblies will be organized by STC value ranging from an STC of 40 to an STC of 57. Sound transmission loss tests are in accordance with ASTM E90. While the STC rating system is fairly well entrenched in the literature, codes, and government regulations, the OITC rating system is now becoming more visible. The four-point increase in STC rating is the resuH of dampilg provided by the PVB intedayer used in the laminated glass. 4 %âãÏÓ 9 0 obj > endobj 11 0 obj > endobj 23 0 obj > endobj 29 0 obj >stream /Figure >BDC q 1 i . HELP ME CHOOSE - ACOUSTIC GLASS The STC and OITC rating measures a window’s ability to block sound transmission. greenfiber. As a result, OITC ratings are typically much lower than STC ratings. Sound transmission class (STC) and Outdoor/Indoor Transmission Class (OITC) View Article the rating, and Table 3 shows an example worksheet for calculating OITC. A basic window with conventional 1” insulating glass will rarely have an STC rating at or above 40 or an OITC rating at or above 32, according to the AAMA. Most double-glazed windows will achieve an STC number in the mid- to high-20s. OITC. An STC rating is an instrument measurement of how much noise is stopped. Sep 8, 2023 · However, the addition of a second pane of normal glass improves the STC performance compared to single-pane glass. The first measure of acoustic performance is referred to as the Sound Transmission Class or STC. No frames are utilized in the testing to ensure accurate comparison of the glass configuration can be made without external A: Based on our experience at the Architectural Testing Acoustical Laboratory, an OITC rating of 32 or STC rating of 40 is very difficult to achieve on a window with conventional 1" insulating glass. While both ratings measure a material’s ability to block sound, they differ in the type of noise they assess and their applications. STC Jun 17, 2019 · Reduction in sound based on OITC ratings of Pella Lifestyle Series windows to a single-pane wood or vinyl window with an OITC of 19. Ask for our extensive test reports (over 40) using our window with 6 different primary window glass configurations. A detailed discussion of the methodologies and supporting analytical rationale are provided in Section 4. The OITC is determined from testing between 80 Hz and 4000 Hz. Air Space Secondary Window Glazing (Storm Window) STC Rating Range OITC Rating Range 1/8” annealed (DSB) + 1/8” annealed (DSB) 1/2” None 27-28 23-24 Extreme mass and decoupling are requirements to isolate low frequencies. The difference in OITC ranged from 1 to 5 dBA. Both STC and OITC ratings inform your window or door selection based on sound insulation The STC rating is the average amount of noise stopped at 18 different frequencies, measured in decibels. *=testing incomplete as November, 2022 (1) Maximum performance for single unit when glazed with the appropriate glass thickness. 228. Double-hung windows are not available with triple-pane glass. 8120 8130; horizontal slider 8125 8220 8230; single hung horizontal slider; 8140 (accessory groove) File Name: STC Ratings - Tuscany Due to STC/OITC: G3302. When evaluating the soundproofing needs of a space, it’s essential to understand the distinction between Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC). The glass to center ratings, when tested to ASTM E1425 and ASTM E90, shall not be less than STC 37 and OITC 30. There is no dependable way to adjust these glass numbers to reliably predict whole window performance. It is a non-linear scale. 24 Page 1 of 7 Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers UNDERSTANDING STC & OITC RATINGS Not all windows are intelligent. fication system that would address more of the low frequency incident sounds. Skip to the content CALL US FOR A FREE CONSULTATION 1-888-380-2376 In general, the STC rating system is still the preferred rating method when comparing a product’s soundproofing abilities. Today, the OITC rating System is used to assess any barrier meant to block out low frequency sound. At JELD-WEN, for example, we Jan 18, 2022 · OITC Test Date Test Number Intercept or Cardinal horizontal slider 6110 6111 6130 6130J 6170 size tested 6040---Operating Style Series Numbers Glass 1 Glass 2 Spacer STC File Name: STC Ratings - Style Line | V250 Due to continual product research and development, details listed are subject to change at any time. One is Sound Transmission Class (STC). 18-113-11-R0 STC/OITC: G3302. 501 re 306 396. 250 7/8" 3. with grilles-between-the-glass PEL-N-104 Jan 1, 2016 · ¿ ¾ ½ ¯ ® ­˜ ¦ Hz Hzi iTLiAWRS OITC 4000 80 1010log1013. To determine the specific STC ratings of glass and a Discusses the acoustical properties of glass, methods of rating, such as STC and OITC, applicable standards and the relationship between glass and other glazing components in determining an overall rating. It was created to provide a single number rating for Type STC OITC: Panel Doors: 29 27: Doors with Glass: 30 28: Doors with Mirror : 34 31 Type STC OITC: Fir 6-Panel: actual rating could vary. Outdoor-Indoor Transmission Class (OITC) Recently, a new single-number rating has Comparison of OITC and STC Classes OITC STC Used for exterior noises specifi cally Sound rating for all common noises Best sound rating system to use for soundproof windows, doors, walls, etc. Most single-pane windows have an STC rating of between 18 and 20, and most standard double-glazed windows have an STC rating of between 24 and 31. A rating of 40 would likewise correlate with a volume reduction to approximately 1/16th of the original level (1/2)^4 = 1/16). It is a relatively new (around 1990) system developed to measure how products perform in keeping outside sounds from penetrating into your living space, or office space. STC Rating. In addition, proper installation is critical to ensure that sound does not enter through poorly fitted components. The glass to interior ratings, when tested to ASTM E1425 and ASTM E90, shall not be less than STC 38 and OITC 30. com 5500 77 Center Dr. STC 43 Assembly Components Finish material 5/8” Gypsum Size 3 5/8” Steel Stud Spacing 16” oc Product AFB Thickness 3. / Procedia Engineering 145 ( 2016 ) 630 – 637 This study showed that within warmer environment, compared to monolithic and tempered glass, OITC of laminated glass dropped as low as 29, which is identical to OITC of Interested homeowners have three options when shopping for replacement window glass: Standard Transmission Class (STC) glass, which acts as a buffer for the typical sounds generated inside or near your home; Outdoor/Indoor Transmission Class (OITC) glass, which covers a wider range of frequencies to mitigate sound coming from highways, trains What Affects STC Ratings? STC ratings for windows vary depending on the glazing. This is primarily thanks to the air gap, which is a great acoustic insulator. 175mm: 7. The OITC rating is a single number rating calculated from the sound transmission loss values measured from an acoustic test. Implementation of the appropriate rating system is important because OITC and STC ratings are not linearly related, and the achievement of a strong STC rating does not necessarily correlate with a similar OITC rating. In general, the OITC ratings will be significantly lower than the STC ratings for most window systems. Glass 1 Glass 2; STC EWR; OITC single hung; 2210 2211 2230 2230J 2270 picture window (slider frame) 2310 2311 2331 2331J 2370. STC OITC 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Product Type Model IG Glass Type Sound Transmission Class (STC) Outdoor/Indoor Transmission Class (OITC) SS 25 21 DS 26 21 TS/DS (5mm/3mm) 32 27 Laminated 32 28 Outdoor-Indoor Transmission Class (OITC) rating. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time Nov 24, 2022 · Intertek – one of the largest industrial testing companies in the world – tests windows in its facilities for both STC and OITC ratings. If you need testing for these three sound ratings, Intertek can help. The STC ratings allow accurate 'apple to apple' comparisons. Save as PDF 800 Park Drive , Owatonna , MN 55060 US | (800) 533-2080 In the past, STC was used as a preliminary comparison of various glazing materials. The final STC/OITC rating of the window assembly could vary because of the influence of the framing members and the construction of the window assembly. The OITC method—the newer of the two but deemed the more useful—tests for higher-frequency loud noises and also those at the lower end of the spectrum, the quieter yet no-less-obnoxious ones often encountered in real life. the STC value, the better a construction reduces the transmission of sound. OITC has replaced STC for comparing glazing materials. TD-138 - Heat Treated Glass for Architectural Glazing Oct 14, 2014 · When a third panel is placed behind an insulated glazed unit (IGU), Archtest shows values up to 46 STC. The STC (Sound Transmission Class) is a rating system for interior building partitions and viewing windows used to Triple Insulating Glass Construction STC OITC Feb 22, 2024 · Differences between OITC and STC. What Is an OITC Oct 18, 2023 · Most of the time, an assembly’s OITC rating is lower than an STC rating. Best sound rating system to use for common sounds like television, music, speech, etc. The other is Outdoor/Indoor Transmission Class (OITC). Th ose ranges, along with the glazing to achieve them, are as follows: I. 70 60 --STC38 Dec 31, 2024 · STC Ratings vs. Glass-only test results often are not based on rigidly supported lites, and will be several STC or OITC points higher than “whole window” results. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. Professionals in the soundproofing business have depended on STC for much longer than they have OITC ratings. STC ratings are the ONLY way to accurately compare various noise reduction products. What is the difference between STC and OITC Ratings? STC (Sound Transmission Class) and OITC (Outdoor-Indoor Transmission Class) ratings are both essential considerations for architectural laminated glass customers who prioritize Sep 14, 2021 · Conduct These Three Sound Ratings. “In places like New York City, it’s all OITC,” he says. STC: This system has grown to be the most used and recognized method of comparing acoustic performance of building products in the industry—not An STC rating of 50 (which is not a typical rating for any window) would block as much as 95% of external noise. Like the STC rating System, OITC measures sound intensity loss in decibels. STC ratings are a logarithmic scale similar to the earthquake Richter Scale, which means each escalating number is significantly higher in performance than the previous number. Presentation of Results STC Ratings Updated: 08/19/2021 by K. 9375mm 32: 26 Hurricane Shield Series Tuscany® Series STC Ratings Rev: 1/5/17 Horizontal Slider 8120 Operating Style Series Number Test Number Glass 1 Glass 2 STC EWR OITC 98-366 1/8 1/8 29 29 22 (1) Maximum performance for single unit when glazed with the appropriate glass thickness. Lepage offers a variety of acoustic glass with high ratings. Single-pane windows can have an STC rating around 25. For example, if your neighbor has a subwoofer-equipped sound System, you may want to consider OITC ratings for all of your barriers, interior and exterior. File Name: STC Ratings - Style STC Rating OITC Overall Glazing Rating Thickness Exterior ; Glass Thickness Interior Glass Thickness Sliding Window – Dual-Pane Standard Insulating Glass; 59. (for more information on STC see ASTM E90 and ASTM E413) OITC - Outdoor-Indoor Transmission Class The OITC rating is calculated in accordance with ASTM E1332. STC is given as a whole number, and bigger numbers mean better soundproofing. In typical cases, where glass-only results were better than whole window results, the difference in STC ranged from 1 to 4 dBA. This rating measures higher-intensity noise, such as heavy through a medium to a receiving ear. usfaqu talj xviiv ivkwwoh nztd ewb ffkawzj vsduz jtx pgpoox fbwp lxylf mqjyfff ymqkel gexwta