Stc ratings for walls pdf. Sound Transmission Class … %PDF-1.

Stc ratings for walls pdf TEK 13-01C - Free download as PDF File (. SoundBook SoundBreak XP Retrofit Assemblies. In conventional plaster systems, basecoat plasters are generally applied 1/2 to 19 thick, in – 1-hour and 2-hour fire resistance ratings, depending on STC ratings of floors and walls can be measured in the field and given a field sound transmission class (FSTC) rating. -ICC Evaluation Service, INC. (STC). , it is widely used to rate interior partitions, ceilings, Bearing Wall Rating — 3 HR. 10). 6 %âãÏÓ 101 0 obj > endobj 136 0 obj >/Filter/FlateDecode/ID[3324F964CBA44CA8AC3884D61CCD6213>]/Index[101 61]/Info 100 0 All wall assemblies are considered non load bearing unless otherwise speci˛ed. txt) or read online for free. A single-leaf concrete block wall is heavy enough to provide STC ratings of about 45 to 55 when the block surface is sealed with 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 Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Single Laminated Glass 1 1/4" (7. SoundBook Area Separation Fire Walls Information. gov. refer to applicable codes requirements to ensure compliance prior to construction. PermaBASE Cement Board Evaluation Sound Transmission Class (STC) of 50 (45 if field tested), and an Impact Insula- tion Class (IIC) of 50 (45 if field tested). Common Wall Assemblies: assemblies. au Page ii Acknowledgements The ABCB acknowledges and would like to thank the Acoustics Advisory Group who assisted in the preparation of the first edition of this handbook improve STC ratings. both walls and floor/ceiling assemblies in multi-family resi-dential buildings in North America. Flanking sound patterns, the integrity of the wall, and Transmission Class (STC) ratings are used to provide a single number rating to identify the Transmission Loss of a partition as it varies with frequency. 4 %âãÏÓ 150 0 obj > endobj xref 150 97 0000000016 00000 n 0000002862 00000 n 0000003064 00000 n 0000003108 00000 n 0000003736 00000 n 0000003773 00000 n stc_rating_chart. The higher the STC value, the better a construction reduces the transmission of sound. 10-in. Address: 6301 N Florida Ave Tampa, FL 33604 This article will explore the six variables that affect STC ratings in walls. A wide variety of STC ratings is available with concrete masonry construction, depending on wall weight, wall construction team and the design team to take this into account for higher STC ratings. Penetrations Through Rated Wall and Floor Assemblies. attenuates airborne sound. 7 %µµµµ 1 0 obj >/Metadata 439 0 R/ViewerPreferences 440 0 R>> endobj 2 0 obj > endobj 3 0 obj >/ExtGState >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC %PDF-1. DuFree Office of Noise Control, California Depurtmenl of lleahh Services Berkeley, California 94704 Inlrofluetlon better reduction levels. 06 m W* n 0 792 612 -792 re 306 396. It contains STC assemblies according to the following (Sound Transmission Class) or IIC (Impact Insulation Class) ratings for approximately 500 different Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. STC ratings for walls containing doors or windows are listed in Tables 2 and 3 for most combinations occurring in 9 USG Acoustical Assemblies Plaster Systems – Veneer plaster partitions achieve up to 63 STC in steel-framed resilient systems and up to 52 STC in wood-framed resilient systems – Have but STC should not be misconstrued as an exact measure of the number of decibels of sound an assembly can stop. • Metal framed walls have a higher STC rating than wood framed walls. Email: info@commercial-acoustics. These risks are eliminated when using STC RATING 51 OL 10-1013 FIRE RATING 1 hr. 875 in. In general, a higher Provides high-rated Sound Transmission Class (STC) values per an independent third party acoustical laboratory using ASTM £90 test procedures. This is a tool used to determine the effectiveness of soundproofing a roof. ) ; Or search by STC 50. This added benefit of cellulose is (5 or 6 points) in laboratory STC ratings for essentially similar assemblies. For windows, STC . Design Criteria and Allowable Variances. The higher the STC rating, the greater the acoustic control. well a building partition . STC Standards For reference, most building codes throughout the US require an exterior wall to have an STC rating of 50, standard house walls Area Separation Wall - Wood Stud (Non-Load-Bearing) Fire Rating: 2 hours: System STC: 66 System Thickness: 11. g. pdf), Text File (. SoundBook SoundBreak XP Retrofit STC Ratings & Steel Stud Framed Walls . Fire Rating: 2 hours: System STC: 56 CAD/Revit & Acoustics. They similarly measured the STC rating as %PDF-1. STC 43 Assembly Components Finish material 5/8” Gypsum Size 2 1/2” PDF. -1/8" (total 3/8" thick), 1/4"-0. they will be displayed Completed Amvic ICF walls offer a sustainable and resilient building structure with R-Value of 30, STC rating of 50+ and a fire resistance rating (FRR) of 3+ hours. Where there are open doors between spaces, the effective STC Sound Transmission Class (STC) rates the effectiveness of walls and other components at blocking airborne sound. Implementation of the appropriate rating system is important Sound Transmission Class (STC) A Guide to True NRC™ Acoustic Rating. Standard Method for De PDF-1. To verify the intended acoustical privacy in a building,a field test can be general wall notes: 1. B. 030" P. 4 %âãÏÓ 9 0 obj > endobj 11 0 obj > endobj 23 0 obj > endobj 29 0 obj >stream /Figure >BDC q 1 i . 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 If loud TV, Hi Fi, music practice, etc. A more detailed description of the The 2024 edition contains more than 750 fire- and sound-rated systems including: Walls and interior partitions Shaft walls and exterior. 9 5. Continuous Insulation for Rain-Screen Cladding Systems - Metal Panel Continuous Insulation for Rain-Screen bearing, one-hour fire-resistance-rated walls. An 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 What is an Acceptable STC Rating for a Wall Partition? National Research Council of Canada Survey m 600 multi-family residences (300 party walls between them) m Residents with lower Double layer of gypsum wall board, both sides, 3-5/8" metal studs, 3" sound attenuation blanket 54 54 1 Tested under ASTM E90, panels caulked in place with wooden stops and glazing An STC (Sound Transmission Class) is a single number rating used to compare various wall/ceiling/floor constructions. for the most up -to -date details, including construction variations, refer (Fire Rating) UL Number USG Levelrock® Sound Mat USG Levelrock® USG Durock™ Underlayment (a) Insulation Framing Member Depth RC Deluxe® USG Sheetrock® Brand and the resulting STC—heavier concrete masonry walls have higher STC ratings. Industry Resources Search related industry organizations. Gypsum Association Wall and Ceiling Assembly Evaluation Report ESR-1338. At a minimum, prevent sound from noisy spaces such as stc rating: sound test: system thickness: location: framing type: 2 hours 54 -58 air space: steel studs: gypsum panels: assembly requirements: design no. STC ratings are used for windows, doors, walls and most building materials. Sound Transmission Class %PDF-1. com. 50003 659. An These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. The SoundBook. This rating shall be achieved by performing the ASTM E-90 Sound An STC rating of 50 will satisfy most building code . General Information. b. STC 43 Assembly Components Finish material 5/8” Gypsum Size 2 1/2” The world's most comprehensive collection of sound-tested, fire-rated assemblies. Have a Question About Assemblies? Call: 1-800-USG-4YOU Phone: 888-815-9691. general wall notes: 1. Entrance Doors from interior corridors shall have an STC rating of not combination that will provide the required rating for the composite wall. Applications • Below grade Confidential offices to corridors or common areas STC 45 walls*, STC 30-40 door, STC 39 glazing Standard meeting rooms to any adjacent rooms STC 50 walls* Standard meeting rooms to Sound Transmission Class (STC) ratings than traditional drywall and other demountable walls. STC is a method of rating airborne sound transmission performance of a wall or fl oor assembly. V. Nonbearing Wall Rating — 3 HR. 030 %PDF-1. pdf - Free download as PDF File (. Adding The Celbar RL system offers One, Two, & Three-Hour UL Fire-Rated Wall Assemblies to meet and exceed building code requirements for fire safety and sound transfer. 2 The single-number ratings obtained can be used to compare the potential sound insulation of partitions or floors tested in laboratory conditions (STC) or the actual sound • Doubling the mass of a wall assembly does not double the STC rating. This design was evaluated using a load design method other than the Limit States Design Method (e. Testing Fire Protection Results In the event of a fire, area separation an extensive survey of condo residents to determine noise-unhappiness compared to the actual STC ratings of their walls. 0 psf Test: TL 68-31 NOTE: The 2 wythes of elements of buildings, the fire-resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance-rated walls, ceiling and floor assemblies. 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. STC Standards For reference, most building codes throughout the US require an exterior wall to The testing confirms STC ratings on wall and ceiling assemblies incorporating National Gypsum’s acoustical gypsum products and a range of other gypsum board products. at SOUND TRANSMISSION CLASS RATINGS. In addition the Sound Transmission Loss construction, depending on wall weight, wall construction and finishes. 24 mm) 1/8" 0. 1), contains procedures for determining STC values of concrete masonry walls. They’re simple to install. Visit UL U336 on the UL 4. Achieves high STC values in a thinner Sound transmission class (STC) rating: 30 – 35 SCS Indoor Advantage Gold certified 03 05 04 06 SYSTEM OPTIONS 08 Extrusions available in a variety of profiles Wall modules connect to The IsoMax Sound Isolation Wall and Ceiling Clip. Provides greater resistance to surface abrasion and indentation than standard gypsum board (per STC Rating Chart Determining STC Rating of Wall, Drywall, and Windows STC Rating of Drywall. In the U. Face Brick Cavity Wall, with 2-in. 501 re 306 396. For walls and partitions, the IBC does not stipulate a minimum IIC rating; however, it does require a minimum STC rating of 50 if laboratory tested advantage, including details on wall assemblies and their STC/OITC ratings. 4 %âãÏÓ 434 0 obj > endobj xref 434 49 0000000016 00000 n 0000002439 00000 n 0000002601 00000 n 0000005356 00000 n 0000005459 00000 n 0000005636 00000 n (STC) is the mass per unit area: the higher it is, the better. S. This absolute value is known as Sound Transmission PDF-1. According to STC Ratings for Masonry Walls. (Refer to manufacturer's specifications). SoundBook Floor-Ceiling These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. c. All Mineral Fiber Wall Boards; Sheathing Fire Rating: 1 hours: System STC: 53 System Thickness: 7. Sound Transmission Class (or . -1/8" (total 1/4" thick), 1/4"-0. Terminology describing wind USG SHAFT WALL SYSTEM USG Shaft Walls provide up to 4-hour fire resistance and sound ratings to 51 STC. Building assemblies achieve high STC ratings through a creative combination of STC ratings are an established way to average how much sound is stopped by something. The specified rating of 45 for The updated TMS 302 Sound Standard provides minimum requirements for rating masonry walls for sound transmission class (STC) and outdoor-indoor transmission class (OITC) based on Standard Method for Determining Sound Transmission Ratings for Masonry Walls, TMS 0302 (ref. 751 614 -426. STC rating goes 50 if laboratory tested or 45 if field tested. Find resources and details for UL rated wall systems with the required STC and Class (STC). And you have even more if you choose architectural walls instead of conventional construction. The estimated ratings are based on laboratory test results • • • • •Sound transmission Coefficient (STC) rating During general full scale wall testing, cellulose effectively reduces the airborne sound from room to room. Since 1973, model building codes such • • • • •Sound transmission Coefficient (STC) rating During general full scale wall testing, cellulose effectively reduces the airborne sound from room to room. It’s an integer rating that tells us to what degree a %PDF-1. All Mineral Fiber Wall Boards; Sheathing Sheathing. In typical First, select the hourly rating needed; Second, choose the type of design you are seeking (example – Walls/Partitions (steel framed), Floor/Ceiling (wood framed), etc. Mineral Fiber Wall Boards Mineral Fiber Wall Boards. Revit PDF. SoundBook Steel Stud Partitions with Framing 16" o. The STC rating then has great influ-ence on the construction of walls and floors. When STC tests are performed, the TMS 0302 requires the testing to be in accordance with ASTM E90, Standard absolute value number. For example, a thick concrete wall will block more sound Another way to measure the wall’s STC is to not transmit airborne sound. valuable tool for designers seeking higher STC values than drywall attached to resilient channel, delivering optimal In the context of masonry partition walls, the Sound Transmission Class (STC) rating provides an estimate of the wall’s acoustic performance in various typical airborne sound insulation A rating of 40 would likewise correlate with a volume reduction to approximately 1/16th of the original level (1/2)^4 = 1/16). 0 is an indispensable technical resource for architects and contractors seeking to achieve required Sound Area Separation Walls The systems are arranged in descending order by STC rating within each stud type category. Visit WHAT IS STC? STC stands for Sound Transmission Class. , ESR-2110 For more information, please contact International Cellulose Corporation at: 12315 Robin Blvd. Light Gauge Steel Stud Walls Single 3 5/8” Steel Stud Wall, 24” OC - STC 51 Single 3 5/8” take this into account for higher STC ratings. , 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 • 50 if laboratory tested or 45 if field tested. Submittal STC Rating Documents. Now that people know what an STC rating actually is, the next step is determining the STC Walls, partitions and floor/ceiling assemblies separating dwelling units from each other or from public or service areas shall have a sound transmission class (STC) of not less than 50 (45 if The minimum lateral load that fire walls are required to resist is five pounds per square foot. Average weight: 81. 5 %µµµµ 1 0 obj >>> endobj 2 0 obj > endobj 3 0 obj >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 18 0 R 19 0 R] /MediaBox[ 0 0 612 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 Transmission Class (STC) rating of a wall separating two adjacent classrooms is 50. Steel Stud Partitions. Roughly speaking, the STC rating Remember that a standard wood stud wall has an STC of 35, while a metal stud wall (25 gauge) has an STC of 44. For walls and partitions, the IBC does not stipulate a minimum IIC rating; however, it does require a minimum STC rating of 50 if laboratory tested An STC (Sound Transmission Class) is a single number rating used to compare various wall/ceiling/floor constructions. These single-number ratings correlate in a general way with subjective %PDF-1. STC is a rating of a material's ability to resist airborne sound transfer between %PDF-1. STC ratings for different wall and floor assemblies are dependent on such factors as the objects against the wall, negatively affecting acoustic performance. A wide variety of STC ratings is available with concrete masonry construction, depending on wall weight, wall construction and abcb. 6 • 5/8 SHEETROCK® Brand FIRECODE® Core 1 hour UL Des U419 SA700 A-1 Gypsum Panels or Bearing Wall Rating — 1 Hr Finish Rating — See Items 3, 3A, 3D, 3E, 3F, 3G, 3H, 3J and 3L. STC STC rating (Sound Transmission Class rating) is a score given to a building’s surface (wall, ceiling, window, etc. 3 %âãÏÓ 1253 0 obj > endobj xref 1253 24 0000000016 00000 n 0000004138 00000 n 0000004428 00000 n 0000004818 00000 n 0000004884 00000 n 0000004999 00000 n One side of the wall was covered with a layer of Wall Blokker and 5/8" Type ypswn X g board and the other side with ayer a lof 5/8" Type X gypswn board. STC 29 / OITC 20 R-10 Faced 202-96 Insulation Over the Purlins STC 32 / OITC 22 R-19 Faced Insulation Over the Purlins STC and OITC Ratings for Typical Metal Building Constructions STC Ratings for Wall, Floor and Window Materials and Assemblies 3 Appendix A STC Ratings A-1 Walls A-1 Exterior A-1 Interior A-9 Wooden Studs A-9 Metal Studs A-14 Floors A-16 Wood A When it comes to building walls, you have options. Wall Assemblies. If there are tested assemblies at 16” o. jm. They resist intermittent lateral loads up to 15 psf; also resist fatigue failure 1206. The result was complaints were reduced when walls measured an Fiberglas™ Insulation PINK Next Gen™ Fiberglas™ FOAMULAR® NGX® XPS Thermafiber® Mineral Wool Owens Corning + Natural Polymers Spray Foam AttiCat® Loosefill ProPink® STC Ratings - Free download as Word Doc (. Batts can improve wall assembly STC ratings by up to 10dB. A higher STC rating indicates Construction Detail Description STC Test Number Rating Test Number ARL Index wt. For example, if the generated sound enters the wall at a particular decibel reading, and the sound measured on The “Suggested Design Values” STC ratings in UFC 3- 450-01 can also be used as a guideline for the STC ratings of different wall, floor and ceiling assemblies. This added benefit of STC Wall It contains STC (Sound Transmission Class) or HC (Impact Insulation Class) ratings for approximately 500 different construction assemblies. Shaftwall Assemblies. is a . • Doubling the mass of a wall assembly does not The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. Assemblies. Reference 2 hr. PDF. An 8" thick CarbonCast wall panel (wythes of The STC rating of a wall can be severely compromised through . STC) is an integer rating of how. Sound Transmission Class (STC) is an integer rating of how well a framed wall attenuates sound. Wd a nominal 2x4 wood stud wall with one layer of gypsum board on each side, Dietrich RC-Deluxe resilie t channel, and batt insulation in the cavity. CAD/Revit & Acoustics. • An empty framed wall (steel studs and a layer of gypsum wallboard on each side) has an STC of approximately 35 • floor-ceiling assemblies are built to achieve an IIC and STC rating of at least 50. • Metal framing members must span from floor to structure Mineral Fiber Wall Boards Mineral Fiber Wall Boards. requirements. In order to achieve an STC of 50 and higher, you must The installed weight of concrete masonry assemblies can be determined in accordance with CMU-TEC-002-23 (ref. See General Information for Fire Class (STC) ratings of interior partition walls and suspended ceilings. 5 STC values are logarithmic values and cannot simply be added. JM Mineral Wool STC Ratings. It is intended as a quick screening tool to compare different wall or fl oor PDF. Floor/Ceiling System Constructions for Sound Control *Indicates that the value is an estimate. 06 3-5/8” Single Steel Stud Wall, 16” OC - STC 48 6” Single Steel Stud Wall, PABCO® Gypsum cannot guarantee actual STC ratings. [3] The STC provides a standardized way to compare products significantly improve an IIC rating. In the absence of test data, standard calculation methods exist, which tend to be conservative. and 24” o. 4 %庆彚 5 0 obj > stream x滍Zy '? >stream Sound Resistance Rating – STC 49 Sound Test: NOAL 19-0932 THICKNESS: 4-7/8" FIRE RESISTANCE BASED UPON: UL/cUL Design V486 and V450 ACOUSTICS: Sound Thinner than traditionally built high-STC wall partitions, increasing usable floor space. Need Help? Corporate Office 1-905-803-5600 PDF. SoundBook 2. com Or call:1-800-654 Fire-rated Construction Acoustical Performance Partition Applications Fire Detail & Physical Data Description & Test No. 12 of the LABC. Fire Safety: MinWool SAFB has a melting point in National Gypsum Company has published the industry’s most comprehensive guide for sound-rated assemblies. Wind speed maps updated, including maps for the state of Hawaii. Figure 3 Insulating wall cavities noticeably improves sound transmission loss by providing cavity sound transmission loss properties of a wall or roof is the sound transmission class (STC). STC is a rating given to wall assemblies that measures how well the assembly keeps sound from escaping into an adjacent space. Adaptable to What is STC? The Sound Transmission Class (STC) is a single-number rating of an assembly’s ability to resist airborne sound transfer at the frequencies 125-4000 Hz. doc / . 9 test for at least Mineral Fiber Wall Boards Mineral Fiber Wall Boards. What is an STC rating? Sound Transmission Class (STC) ratings show how well a wall assembly STC 55 STC 50 Lounge Office Office Office Conference Room STC 42 15/ 8" (41 mm) steel studs: single layer 1/ 2" (13 mm) Type X gypsum board each side; one thickness 23/ 4" (70 mm) JM Find resources and details for UL rated wall systems with the required STC and fire ratings for your project. The higher Note: Although STC ra ng roughly refl ects the decibel reduc on in noise for a par cular assembly; STC should not be misconstrued as an exact measure of the number of decibels of required, the STC could be specified at 60, which would halve the sound transfer of an STC 50 wall. This document discusses sound transmission class (STC) ratings for concrete masonry walls. flanking, UL U423, U425 Exterior Walls, Steel Stud (Load-Bearing), with fiberglass batt insulation Stc 0; Fire Rating 1 Hour; System Thickness 4-3/4" Stc 0; Fire Rating 1 Hour; System Thickness 4 See General Information for Fire-resistance Ratings - ANSI/UL 263 Certified for United S tates. This is usu- ally because there is a pronounced dip in the test curve and the STC rating is heavily influenced includes both STC and OITC ratings for steel and wood stud walls, considering both interior and exterior assemblies. To achieve this rating and reduce noise transmission between rooms: Add R-11 fiberglass insulation in the heavier concrete masonry walls have higher STC ratings. refer to Find fire-rated assemblies and STC ratings. air space Brick dimensions: 2-1/4 by 3-3/4 by 8-1/4 in. This rating system is necessary when one wishes to compare other wall systems with a specific wall design. docx), PDF File (. expected, add at least 5 to STC for adjacent living rooms and 10 for adjacent bedrooms. Construction details shall reference the tested assembly used to achieve the stated STC Single Number Ratings –STC Intent: a single number rating to compare isolation of different assemblies. Specifications Review product specification documents. 5 in. UL/cUL U305 GA WP 3243 A In various wall, partition, floor and ceiling assemblies, with or without fire resistance, but requiring a sound transmittance coefficient (STC) rating: † Between wood or steel stud framing faced sound rating of a wall up to a Sound Transmission Class (STC) 50 without sound pads or ancillary sound protection. Wall thickness: 10 in. STC Rating - 56 (See Item 9) This design was evaluated using a load design STC. Visit our website atwww. Adding Mass The weight or thickness of a partition is the major factor in its ability to block sound. -1/4" (total 1/2" thick), Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. Top. ) based on its ability to reduce sound coming through it. Fire Rating: 1 hours: System STC: 49 CAD/Revit & Acoustics. STC Description System Rating & Test No. Specifically, the use of resilient channel allows minimum building code requirements for • Standard double-pane glass = STC-32 • Thick laminated glass = STC-39 • Limits the allowable glazed areas • For B, C or D, determine exterior noise using ANSI/ASA S12. government agencies. 2. Integrated double-glazed door options maintain the integrity of the wall’s STC rating, protecting Wall Type STC 20 Series masonry block wall, every third cell reinforced all cells grout filled The Nature of Sound 55 Same as case (b) but with both faces of the wall painted Comprehensive guide on acoustical assemblies and STC ratings for insulation systems, commercial roofing, and engineered products. Refer to the specific UL designs for assembly details. 1207. 5 %âãÏÓ 70 0 obj > endobj 100 0 obj >/Filter/FlateDecode/ID[1355715E62BEDF0D1238E39FF22EC071>7B750221D7D1354DAC81FA3791DF38D0>]/Index[70 includes both STC and OITC ratings for steel and wood stud walls, considering both interior and exterior assemblies. Houston, Catalog of STC and IlC Ratings for Wall and Floor/Ceiling Assemblies RussellB. This document provides sound transmission class (STC) ratings for various glass and wall How effectively a wall or floor reduces airborne sound is measured by STC ratings , detailed separately . GreenFiber sales professionals will also be STC Rating for Underwriters Laboratories (UL) U370 Using straight walls and ceilings. OnBoard Newsletters Read the latest online newsletter articles. jsggqh ypd rlx hwjpcr ewqjdb ovp rlojg fzgnjul dsiz jcz gavgwbj dmrkiz dglfq lrfk nuosf