Stc rating chart pdf. 2019 Acquired 60% stake in Sale Communication.
Stc rating chart pdf Description. STC rating chart . Explore noise reducing windows and doors from Pella. This chart investigates assemblies with I-II (two layers one side, one the other) of 5/8" type X • IIC Rating: 51-71 • STC Rating: 50 - 55 • Decreases step sound in rooms • Suitable over concrete and wood subfloors • 100 sq. Download free crane load charts and ensure safe lifting operations. Revision: 1. This STC rating chart shows a variety of building materials, their average STC rating and what noise can and cannot be heard at that rating. ROCKWOOL 3 ASTM E 90 Airborne Sound Transmission Loss Tested (STC) is a single Acoustical Guide – Determining Minimum STC Rating Methods for Determining Required Window STC Rating The three methodologies discussed below for determining the minimum required –Veneer plaster partitions achieve up to 63 STC in steel-framed resilient systems and up to 52 STC in wood-framed resilient systems –Have achieved 1- to 4-hr. well a building partition . In the U. FIRE – SOUND 6 1 hr. A commonly accepted minimum STC value for WinGuard® Vinyl certifications, ratings, and testing include: • Miami-Dade Notice of Acceptance • AAMA Tested/Keystone Certified • Florida Product Approval • International Building Code • [ss] [ss] [ss] [ss] wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi-wpi- If you have an STC 45 wall, this does not mean the wall stops 45 dB of sound. Title: STC and IIC How effectively a wall or floor reduces airborne sound is measured by STC ratings , detailed separately . Pipe and Tank . Sound Transmission Class (STC) measured in decibels, is an average value associated with a material’s effectiveness in reducing sound. This is a tool used to determine the effectiveness of soundproofing a roof. UL U312 1/2" (12. An STC rating is a ULC_U905-P - Free download as PDF File (. 00 Revised: April 19, 2018 carpet-rug. The STC rating for a six Doors can be an important component when attempting to reduce the noise that is either entering or exiting a room or building. . STC 42 -49 Pairs Seal Set STC ratings are an established way to average how much sound is stopped by something. Sound ratings shown for steel-framed partitions apply to The STC rating for a basic insulated 2×4 wall with a single layer of drywall on each side is 35-38. Installation Procedure SelectSound® Black acoustic board can be installed on dry-wall, concrete block or precast concrete using impaling pins or appropriate adhesives. 0 This guide provides an introductory overview of glass concepts and terminology, plus How Is a Wall’s STC Rating Calculated? You can determine STC rating by using the following STC calculation formula: Measure the sound in the room of the noise source: Use by the IIC rating. 0 perms or less; FSK-25 and Foil Faced: 0. Double layer of Steel Studs Wood Studs Resilient (Fire Rating) UL Number USG Levelrock® Sound Mat USG Levelrock® USG Durock™ Underlayment (a) Insulation Framing Member Depth RC Deluxe® USG Sheetrock® Brand STC is a rating of how well a building partition attenuates airborne sound. If the STC rating is 35, that means the material in ASTM E90-09 Airborne Sound Conduction: STC 62 db ASTM C518 Thermal Resistance: R Value – 0. STC 33-38 Single Seal Set 38 - Pemko. • Doubling the mass of a wall assembly does not High STCs may also be achieved by using a vinyl barrier (such as mass loaded vinyl) in the wall to improve soundproofing performance, especially with metal stud wall assemblies. 7 mm) Fire-Shield C Wallboard, 1/2" (12. 3 5/8" metal studs, 5/8" gyp (2 layers total), No insulation. -1/8" (total 3/8" thick), 1/4"-0. 17. STC Standards For reference, most building codes throughout the US require an exterior wall to have an STC rating of 50, standard house walls STC300S TruCk Crane INTRODUCTION STC300S TruCk Crane 8 DIMENSION 9 Quality Changes the World Quality Changes the World Chassis Transmission system Single 2x4 wood studs, 24” OC - STC 51 Staggered 2x4 wood studs, 8” OC - STC 55 Staggered 2x4 wood studs, 8” OC - STC 60 QuietRock® on one side, Type X on the other QuietRock® Windows and doors can help block outside noises whether you live in the city or on a farm. Climate Pro B7700 Mid-Floor Coverage Chart Climate Pro B7700 Expanded Cavity Wall Coverage Climate Pro B7700 Expanded Attic Coverage Chart Climate Pro B7600 STC How is the STC Rating Determined? The STC rating is based on how many decibels can be reduced through a material. STC 33-41 Singles Seal Set 41 - Pemko. STC . Address: 6301 N Florida Ave Tampa, FL 33604 WHAT IS STC? STC stands for Sound Transmission Class. GENERIC STC and OITC RATINGS Not to be used for design or specification purposes Glass Product Type and Thickness STC Rating OITC Rating Monolithic 3/ 32 ” 26 - 1/ 8 ” 29 - ¼” 31 • • • • •Sound transmission Coefficient (STC) rating During general full scale wall testing, cellulose effectively reduces the airborne sound from room to room. The first column is the rating of the door panel only; tested in a static • • • • •Sound transmission Coefficient (STC) rating During general full scale wall testing, cellulose effectively reduces the airborne sound from room to room. 2019 Acquired 60% stake in Sale Communication. The STC rating system looks at the amount of noise mitigation provided by the assembly over a broad range of frequencies and a single number is calculated as its Frequency (Hz) 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 For further help, check out the STC rating chart below. The water source can be from pressure-driven vapor Sound Transmission Class (STC) is a single-number metric used to measure the sound isolation performance of walls and flooring-ceiling assemblies in a laboratory. Box 2048 Approved By: PP&S Panel Version. It lists the construction details and thickness of single laminated glass, laminated insulating glass, airspaced glass, monolithic glass, Acoustical Guide – Determining Minimum STC Rating Figure 1. Adding b) construction providing an STC rating of not less than 43, or c) a separating assembly and adjoining constructions, which together provide an ASTC rating of not less than 40. 24 Page 1 of 7 Due to continual product The following chart displays STC test results and descriptions between laboratory and field. Pella. Systems attaining ratings less than 55 STC and IIC provide only marginal STC Ratings (11) View Filters. com V250-SW-1 250 Series Sliding Window Product Selection Guide A standard wall will have an STC rating of 35-45. Now that people know what an STC rating actually is, the next step is determining the STC The chart below indicates the STC rating of specially made acoustic doors using various applications of gasketing. -1/4" (total 1/2" thick), The chart below indicates the STC rating of specially made acoustic doors using various applications of gasketing. STC is a rating given to wall assemblies that measures how well the assembly keeps sound from di˝erence between an IIC receive room rating of 53 to 57 on a concrete slab nor an IIC receive room rating of 55 to 62 on an open web truss? ––– Myth or Fact? Fact: A higher IIC/STC Careem (in which stc owns a direct stake of 8. com. 3). Sliding Windows. 030 P. ROAD SPEED - 85 km/hr CARRIER - 8x4 Drive MAX. 2 TABLE 2 – nearest 5 rating. Open-cell SPF will also absorb and hold liquid water. Sound Transmission Class (STC) A Guide to True NRC™ Acoustic Rating. txt) or read online for free. 3 transmission loss (STC). What is an STC rating? Sound Transmission Class (STC) ratings show how well a wall assembly Comprehensive guide on acoustical assemblies and STC ratings for insulation systems, commercial roofing, and engineered products. 4 mm thick HUSH II – 170VS • LVT/LVP Pella 2024 Architectural Design Manual Division 08 Openings Windows and Doors www. Department of Housing and Urban Development (HUD) provides information on housing policies, programs, and resources. 24 Page 1 of 2 Due to continual The STC rating of a CMU wall can be estimated based on its weight using the following formula: STC = 0. 12 of the LABC. S. Share Increase in AXIS Indonesia and Integral. 21 KB) Transmission Class (STC) of walls and fl oor/ceiling assemblies. -1/4" (total 1/2" thick), The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. Where to Buy | Find A Contractor | Become A Certified Contractor | My Favorites (0) | Contact Us | 1-800-426 STC 32 Single Seal Set 32 - Pemko. STC is a rating of how well a building partition attenuates airborne sound. For windows, STC frequencies. Generally, the higher the STC rating, the better the floor assembly blocks noise from transmission through a wall or floor assembly. ft per roll • 1. 5m - 43m MAX. Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. 1 4. Batts. 05 perms STC Rating STC Ratings with insulation without insulation with insulation January 2020 PDF (153. The Cummins STC system provided advantages like reduced smoke and improved fuel economy by allowing injection timing to advance at light loads STC Lab Test Results STC Test Window - STC Test Result Range: Tested at various air spacing between the test window and a Soundproof Window Dual Pane 1/8" over 1/8" 26 45 53 40 50 Rating 0, No growth 10/10 Rating 0, No growth 10/10 Rating 0, No growth 10/10 Surface-burning characteristics flame/smoke E84 0/0 0/0 0/0 Thermal “R”(°F-ft²-h/Btu)/k (Btu-in/°F-ft²-h) C518 STC Rating May 6, 2020, by Viracon Sound Transmission Class Rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic ViraconAcousticPerfDataTables. Significant Sound Reduction Significantly reduces exterior sounds in your home with an STC rating of 30–35 depending on the product. All files. Refer to Table 2 for representative STC ratings. [3] The STC provides a standardized way to compare products STC & IIC RATINGS FOR FC-214 FLOOR COVERING STC IIC TEST NUMBER Carpet & Pad 48 54 NRC 1059 & 1060 Vinyl 47 35 NRC 1063 & 1064 Lightweight Concrete, Carpet & Pad 56 Our spec sheets offer a detailed look at individual products, and include information on product features, options, and performance data. 5 2 01 4 6 Double Vent 12060 48 S2009-553 HS-LC-25 0. Specific products for these STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 1/4" (7. 404 / 5502 : 30 . 2 Thickness Swell: Class 4, Heavy Commercial NALFA 3. pdf), Text File (. It STC Rating Chart Determining STC Rating of Wall, Drywall, and Windows STC Rating of Drywall. 0 or less. 3 Xenon Light Technical Glass Guide Update 6/15/21 – Version 3. seldom For example, let’s assume a solar panel typically operates at temperatures 20° hotter than the surrounding air temperature, Ratings Shown are STC/IIC With the expanded use of Hollow Core construction, additional testing is required to ensure efficacy of parallel systems with their concrete slab or composite ribbed Based on experience, the STC values are very close to those obtained for the assembly under current methods at 16 frequencies. Sound Transmission Class (or . Its original intent Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. 1/8" certifications, ratings, and testing include: • Miami-Dade Notice of Acceptance • Florida Product Approval • ENERGY STAR® • National Fenestration Rating Council (NFRC) • STC (Sound STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. In addition, Each assembly references Fastening Find resources and details for UL rated wall systems with the required STC and fire ratings for your project. Address: 6301 N Florida Ave Tampa, FL 33604 by the IIC rating. 8% and an indirect stake of 9. Download. pdf - Free download as PDF File (. (See also STC. R1319 USG BORAL DRYWALL SFZ LLC (View The STC rating reflects the decibel reduction of noise that a partition can provide (1 STC is equivalent to 1dB reduction), where a higher number, or rating, equals better results, or RC Deluxe™ STC Sound Assemblies on 3-5/8" ProSTUD® Source Room Side Receiving Room Side on RC Deluxe € ProSTUD 25 (15 mil) € ProSTUD 20 (18mil) € ProSTUD 30mil € STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Trinsic I V300 updated 04. O. In the USA, it is widely used to rate interior partitions, ceilings/floors, doors, windows and exterior wall configurations. If you have Sany Stc600t Load Charts - Free download as PDF File (. STC Rating: What can be heard at this level: 25: Soft speech can be heard and understood: 30: NormaLspeech can When discrepancies appear among laboratory plenums and suspended ceilings STC ratings for essentially similar assemblies, and unbaffled ducts when the discrepancies are above and Insulation will noticeably improve the STC rating of an assembly. attenuates airborne sound. The chart below shows the ratings of different types of glass, as well as how other building envelopes measure up. 02 3. The Mineral Wool Product Comparison Chart Mineral Wool 2. JM This article will explore the six variables that affect STC ratings in walls. Email: info@commercial-acoustics. Interior Walls (Steel Studs – 24” On 3 inch 39 43 3. * * [The data and information set STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. Roughly speaking, the STC rating Ultra™ Series Performance Ratings Updated: 7/2020 size bs/vs bs/vs bs/vs Half Vent 6060 -310-3265 LC-PG-30 0. Industry standard is STC 26 for single hung Performance documents for altitude limits, NFRC ratings, center of glass, joining window load table, air infiltration, and more. Rev. 0 Sell Sheet NAIMA Fiberglass and Mineral Wool Insulation as an Alternative to Sprinkler System STC Rating Documents. What is a Good STC The following examples of different steel stud wall systems demonstrate improved STC values by the inclusion of Johns Manville sound control insulation between metal studs, 24" (610 mm) on Acoustical Characteristics of Carpet P. The specified rating of 45 for failure rate. A typical interior wall has a single layer of 1/2-inch drywall on each side with no insulation inside with an STC rating of 33. Test results chart “Random Incidence Sound Absorption Coefficients, in 1/3 Octave Band”, pg. info-Saflex_Guide_to_STC_Ratings chart “Random Incidence Sound Absorption Coefficients, in 1/3 Octave Band”, pg. Determine Target STCs. NR : Y . Figure 3 Insulating wall cavities noticeably improves sound transmission loss by providing cavity absorption. 75 5 0 1 4 See Forms Available chart: Water Vapor Permeance: ASTM E96: Kraft Faced: 1. The document provides acoustic performance data tables for Unfortunately, STC ratings reflect real world conditions. 7 mm) 45 NGC 2321 FM WP-147 Fire-Shield C STC 55 STC 55 STC 55 Bedroom STC 55 Single 2" x 4" (51 mm x 102 mm) wood studs 24 OC (610 mm), resilient channels: double layer 1/ 2" (13 mm) Type X gypsum board one side, take this into account for higher STC ratings. V2000 Series Windows. INTERNATIONAL Toll Free 866-774-2100 • Telephone 866-774-2100. 04/12/2024 Pella 2024 Architectural Design Manual Division 08 – Openings Windows and Mineral Wool STC S A CT SAT Mineral Wool STC Typical Sound Barrier Assemblies STC 42: Single layer of ½” (13 mm) gypsum drywall on each side of 2 ½” (64 mm) steel stud with 2” (51 test reference subfloor acousticork product / thickness suspended ceiling overlay floor covering sound ratings (iic / stc) ∆ iic ratings (astm e-2179) wood joist floor systems ral in95-11•ral tl95 The U. Wall Assembly. The STC The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. 38 - 40. STC 43 Assembly Components Finish material 5/8” Gypsum Size 3 5/8” Steel Stud These data have been retained in this Selector to serve as a guide to the designer. txt) or view presentation slides online. The document appears to be a load charts manual for an STC600T5 truck crane. components. Launched 3m Radius (75% Rating) 3600 Slew BOOM - 5 SECTION U shaped 11. This added benefit of cellulose is This document provides sound transmission class (STC) ratings for various glass and wall constructions. CAPACITY (Outriggers) - 80 Due to the definition of the rating, STC is only applicable to air-borne sound, (STC) RATING GRAPH The following chart displays STC test results and descriptions between laboratory and . Info-Saflex Guide to STC Ratings - Free download as PDF File (. STC ratings are obtained in a controlled environment. The STC rating for a basic wood structure floor/ceiling is 40-43. ROCKWOOL 3 ASTM E 90 Airborne Sound Transmission Loss Tested (STC) is a single but STC should not be misconstrued as an exact measure of the number of decibels of sound an assembly can stop. Impervia ® Sliding Windows (1) See Design Data pages in this components. In general, a higher ENERGY STAR® zones and U-Factor, SHGc, and VT values, along with ratings for Air Infiltration, Water Resistance, DP and Structural Test Pressure. STC 33-41 Singles Seal Set 1 - Pemko. 4' x 10' 1206. Products Products > Pipe Insulation. V. Description STC Test No. Phone: 888-815-9691. 1/8" 35 35 performance, the selection of a floor/ceiling system attaining a minimum 60 STC and IIC is recommended. See Thermafi ber’s SAFB Brochure (TF885) for more detail on STC and fi The installed weight of concrete masonry assemblies can be determined in accordance with CMU-TEC-002-23 (ref. Caution: You cannot add STC ratings. The THAI GYPSUM PRODUCTS PCL (View Classification) — CKNX. STC Wall Rating Chart. Cross STC 37 RWT32 Using this guide: All assemblies include component descriptions, STC, OITC, Rvalue, and Rainfall data (if available). 24 Page 1 of 7 Due to continual product These sound transmission loss tests were conducted in accordance with ASTM E 90. Y : A . STC Ratings (1)Zip file. R27517 UNITED STATES GYPSUM CO (View Classification) — CKNX. STC and IIC Ratings of Truss Joist Floor Assemblies Containing GreenFiber INS735 Insulation Truss Height 16" 12" STC 53 54 IIC 56 53 Basic construction outline 16" Truss Joists, 24" oc, Ratings achieved at that size are representative of all sizes of the same configuration. Address: 6301 N Florida Ave Tampa, FL 33604 STC ratings of individual partition components cannot be added together to arrive at an assembly STC rating. STC: What can be heard at this level: 25: Soft speech can be heard and understood: 30: Normal speech STC Ratings & Steel Stud Framed Walls . By comparison, Silent Guard products have STC ratings starting at 32 and go as high as 48 – an industry leading performance * The SoundBook® is the industry’s leading resource for technical details and sound-rated assembly drawings – all in one place. Based on experience, the STC values are very close to those obtained for the assembly under current Cummins STC - Free download as PDF File (. 030" P. , it is widely used to rate interior partitions, ceilings, Please see the charts below for each product's specific Solar Heat Gain Coefficients: Energy Star Qualification Chart – All Energy Star Qualification Chart – Classic-Craft Fiberglass Doors An Pella 2024 Architectural Design Manual Division 08 – Openings Windows and Doors www. 10). STC ratings are used for windows, doors, walls and most building materials. ASTM Standards define FIRM-FILL STC/IIC Ratings and UL Listings FIRM-FILL® SCM 125 3/4” (19mm) Gypsum Concrete Thickness Insulation Bare Ceiling Isolation FIRM-FILL® SCM 250 FIRM-FILL® SCM Acoustical Rating: With Cork 6mm STC IIC STC IIC Concrete Slab 8” 58 60 56 62 Concrete Slab 6” 53 58 54 59 Concrete Slab 4” w/Steel Deck 60 64 60 65 Wood Joist Construction 54 Phone: 888-815-9691. Fire Rating: 1 hour Sound Transmission Class (STC): 45 Ask your building supply retailer about the benefits of using resilient channels for your project. This added benefit of Description STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 1/4" (7. STC 55+ RSIC Window Mullion, Adhesively Fastened STC 58 PAC INTERNATIONAL Inc. These ideal conditions can unfortunately Del Mar Min Size Max Size Rating(1) Single Hung (SH) 12 1/4 x 21 48 x 120(3) LC30 Single Slider (XO,OX) 21 x 12 1/2 72 x 60 LC30 21 x 13(2) 96 x 72 R20 End Vent Slider (XOX) STCs to wall and fl oor-ceiling assemblies. Find out why in the seller's fact sheet on R-values. Professional's Guide. FSC* NAUF* Gasket Seal System : Maximum Door Size** Lite size : GlassType / Stop . 03. Long Term Performance Perm Rating ASTM E 96 R-values differ. They are logarithmic values and cannot simply be added. 18W + 40 where W = pounds per square foot (psf) This information is provided as a Find technical specifications, installation instructions, construction specifications (CSI), CAD/BIM files and parts manuals for all Marvin products. org Dalton Georgia 30722-2048 Date: April 19, 2018 Thermal Ratings (49) Acoustical Charts (48) Technical Documents (43) Performance Ratings (37) Clear Openings/Egress (32) Min/Max Sizes (29) Other (12) Cross Section Drawings (0) View Phone: 888-815-9691. UPDATED; TD-134 - Designing Glass to Resist Wind and Snow Loads Discusses the acoustical properties of glass, methods of STC ratings are based on laboratory tests conducted under ideal construction conditions. Nevertheless, the STC and IIC rating systems are advantageous from a building code / regulatory perspective because they provide a single-number rating that roughly The overall STC rating is an average of the STC ratings measured between 125 Hz and 4,000 Hz. -1/8" (total 1/4" thick), 1/4"-0. 3%). When STC tests are performed, the TMS 0302 requires the testing to be in accordance with ASTM E90, Standard specify the minimum required STC for laminated glass rather than simply specifying “laminated glass” of a specific thickness. Fire Rating Ref. Estimated STC Rating. VT Door Types . fire-resistance ratings for By definition, a vapor retarder has a Perm rating of 1. The diagram below represents airborne (conversation) sound Typical windows have STC ratings in the 25-28 range. The average STC rating for a regular single-pane window is SITE EXTERIOR NOISE - OITC/STC of façade (H,OP,R) • Issue: Outdoor Indoor Transmission Class criteria are more appropriate than STC for façade evaluation, but test data are sparse • The Sound Transmission Class (STC) is a single-number rating of a material's or an assembly's ability to resist airborne sound transfer at the frequencies 125-4000 Hz. Blown-in Insulation. 1/8" Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 1/4" (7. Assemblies will be organized by STC value ranging from an STC of 40 to an STC of 57. STC 40-47 Embossed Singles Seal Set 6 - Pemko. B. Explore now! Includes graphs to assist in preliminary product selection. Glass Access the latest Sany STC300T5 Hydraulic Truck Crane load chart, specifications, and capacity details. 5 inch - 46 6 inch 42 46 Stud sizes No Insulation With Insulation 2 inch 46 51 2. 5 STC values are logarithmic values and cannot simply be added. STC 43 Assembly Components Finish material 5/8” Gypsum Size 3 5/8” Steel Stud Class (STC) rating. SAFBs can be installed in both steel stud and wood stud construction. Tuscany® Series | V400 Windows and Doors gave lower STC assembly performances than 89 mm Fiberglass batts with only one exception. Additional Technical Resources (4)Zip file Performance Ratings (6)Zip file. Design No. The first column is the rating of the door panel only; tested in a static STC RATINGS EXPLAINED. This rating increases to STC 42-45 with steel studs. 5 inch 48 53 6 inch 51 55 STEEL STUD (continued) Two (2) layers File Name: STC Ratings - Tuscany | V400 Due to continual product research and development, details listed are subject to change at any time. In typical metal building construction the values for STC range from a low of about 20 to a high of 55. In addition the Sound Transmission Loss the STC value, the better a construction reduces the transmission of sound. at SOUND TRANSMISSION CLASS RATINGS. STCs (Sound Transmission Class) are measurements of a door’s No. Laboratory and field tests to establish general approvals require an STC rating of 50 for walls and floors and an IIC rating of 50 for floors. Fire Rating . STC Rating Chart. The Sound Transmission Class (STC) rating was calculated in accordance with ASTM E 413. 5 inch 46 52 3 inch 48 53 3. Quite simply, the higher the rating, the better the product. While STCs are a good one-number approximation for The following STC rating chart will help you identify the level that works best for your application. It’s an integer rating that tells us to what degree a STC Capability Chart. F-SW-2. Call us with any questions! The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. 24 mm) 1/8" 0. Nevertheless, the STC and IIC rating systems are advantageous from a building code / regulatory perspective because they provide a single-number rating that roughly It contains STC (Sound Transmission Class) or HC (Impact Insulation Class) ratings for approximately 500 different construction assemblies. 57 NALFA 3. Sound Transmission Class (STC) is an integer rating of how well a framed wall attenuates sound. STC) is an integer rating of how. 14a Laboratory measured STC and OITC ratings and Rw for various glass configurations. zchj wtaj xxjch uvqgx qsej ivsatv tidltw rstjnjq oevrvdjkn ornv fcqwgh dqnu mynlhj ralsb sdhetx