Stc rating wall assemblies. 3/4˝stucco mineral wool insulation 2x6 studs at 16˝o.

Stc rating wall assemblies STC is highly dependant on the construction of the partition. Option for wood structural panel sheathing. As Thorburn notes, “ In the past, using multiple layers of gypsum sheathing to increase the mass of the system has been the most common solution to raising the STC rating of the system. ) STC ratings from each of the components should be taken into consideration as well as the Table of STC Ratings for Typical Wall Assemblies. This design was evaluated using a load design method other than the Limit States Design Method (e. What can be changed in a wall assembly to increase its STC rating or value? Sound Transmission Class ratings are affected by six variables, ranging from the materials used to build the assembly to the construction method. Construction practices have an influence on field STC ratings and ICC cannot guarantee actual STC 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. What is apparent sound transmission class (ASTC)? UL Wall Assemblies BIM - Revit Library EPDs and HPDs > NAIMA 3E Plus FAQs Equal Tee Stencil Stc 54; Fire Rating 2 Hour; System Thickness 6-1/2" Stc 54; Interior Steel Stud Assemblies STC Range 40-57 Pages 10-22 Interior Wood Stud Assemblies STC Range 36-66 Pages 23-31 Exterior Wood Stud Assemblies STC Range 35-39 Pages 32 Exterior Steel Stud Assemblies STC Range 43-52 Pages 33-37 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. 10). With years of experience and expertise in the field of soundproofing, we have developed a range of STC rated assemblies and techniques to help you achieve the best possible sound The acoustical performance of a wall assembly is measured using a single number rating system, where the higher the number the better the performance. Fire-rated assemblies are tested and certified in their entirety. 1-hour interior staggered stud partition wall assembly with STC 53. , Working Stress Design Method). Framing Members* — Steel Studs — As an alternate to Item 2 — Channel shaped studs, min 3-5/8 in. A more detailed description of the wall assembly appears in the sections below. Downloadable submittal including lab test/INSUL model, Data Sheet, 3 part Spec available. This includes both STC and OITC ratings for steel and wood stud walls, considering both interior and exterior assemblies. 3. 2) for laboratory testing or ASTM E413, Standard Wall Assemblies; Floor-Ceiling Assemblies; Roof-Ceiling Assemblies; Design Details; Fire Rating: 1 hours: System STC: 53 System Thickness: 7. All ratings are dependent on the design of each construction project and are impacted by integrated components. The higher the STC rating, the better the wall is at preventing airborne sound transmission. The sound transmission loss at each frequency can vary, highlighting the importance of reviewing the assembly sound test. The STC Calculator is a tool designed to provide expected STC ratings of your UL assembly based on stud size and spacing, wall types, and drywall layers. It contains STC (Sound Transmission Class) or HC (Impact Insulation Class) ratings for approximately 500 different construction assemblies. STC Composite Ratings Interior walls that are composite assemblies (walls with windows and doors in them) should be rated based on their composite ratings. It is cheaper than 16-gauge or 20-gauge, and adds 4-7 STC points to the wall. Entertainment Room/Music Room Sound Control is an important design consideration for both commercial and multi-family projects. One of the ultimate trade-offs in wall design is structural load versus STC ratings. e. The target ratings are dependent on the adjacency and occupancy class on each side of the wall – a band room may not need a high STC wall if placed next When the mass of a barrier is doubled, the isolation quality (or STC rating) increases by approximately 5 dB, which is clearly noticeable. An STC of 50 is a common building standard and blocks approximately 50 dB from transmitting through the partition. com systems are fire-rated and easily specified by a UL Design number. to confine and isolate fire within a zone comprised of fire-resistance rated walls, ceiling and floor assemblies. Mar 30, 2023 · Also, an acceptable STC rating for walls may be different from the acceptable STC rating for floors, depending on whether the walls are shared by a neighbor, or a room is directly beneath a kitchen with heavy traffic. Outside the US there are various standards of measure to achieve the same rating. Users can enter the calculated noise level related to a specific Noise Assessment Location in front of a building façade and STraCAT will generate a target required attenuation value for Jun 15, 2024 · Some wall assemblies can achieve even higher STC ratings, such as a wall with an inner layer of 12mm soundboard on both sides and an outer layer of 16mm soundboard on both sides. How the STC Wall Calculator Works. 08. spaced 24 in. Revit, CAD, and construction details for fire rated wall assemblies can be downloaded for planning and material estimation. GridMarX® installation guide marks are printed on the paper surface to help installers instantly identify stud locations and make accurate cuts without having to pencil in or snap chalk lines. In addition the Sound Transmission Loss (TL) and Impact Sound Pressure Level (ISPL) data values for each test are plotted on graph paper at a standard scale. 875 in. Effects of Green Glue in a Staggered Stud Wall . The higher the STC rating of a partition, the greater the partition’s ability to reduce the transmission of airborne sound from one side to the other. Feb 22, 2022 · fire rating: stc rating: sound test: system thickness: location: framing type: 2 hours 66 ral -tl20 -180 11 -1/2" [292 mm] interior wood stud (load -bearing) gypsum panels: wood studs: insulation: air space: steel studs: gypsum panels: air space: wood studs: insulation: gypsum panels: assembly requirements: design no. The STC rating is an average of all those numbers. deep, spaced a max of 24 in. In everyday environments, STC ratings are used to evaluate walls, floors, and ceilings, but they can also be helpful in choosing soundproofing products like Mass Loaded Vinyl (MLV). Penetrations Through Rated Wall and Floor Assemblies. Check out a recent post from the NGC Blog for in-depth information about the six STC design considerations and how to create better acoustical Bearing Wall Rating — 1 Hr. Mar 5, 2021 · The overall STC rating is an average of the STC ratings measured between 125 Hz and 4,000 Hz. Similar to STC, the Oct 11, 2021 · ClarkDietrich Wall Type Creator Overview: The ClarkDietrich Wall Type Creator is the first Revit® add-in design tool that intelligently incorporates detailed information on wall elements and design properties, such as UL assemblies based on fire rating requirements, STC sound ratings and limiting height design. The higher the frequency, the easier it is to reduce. Cam Lift Hinges come in standard or electrified models. . For wall of the same weight in this comparison, Green Glue adds 10 STC points and improves low frequency performance by as much as 12 dB. The higher the STC rating, the better the acoustic insulation of the construction assembly. Acoustical Enhanced for High Rated STC Wall Assemblies Mold/Mildew/Moisture Resistant Approved For Use on Walls and Ceilings Soundbreak XP Gypsum Board is an acoustically enhanced gypsum board used in the construction of high STC wall assemblies. The specified rating of 45 for field-tested assemblies (noted in 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. Note: Improving the STC rating of a wall will probably not affect the reverberation or reflections within the space. This document contains summaries of the test results, as well as links to the individual test reports for those who wish to review more detailed information. Wall Assemblies; Floor-Ceiling Assemblies; Roof-Ceiling Assemblies; Design Details; Shaft Wall Limiting Heights & Spans; USG Ceiling Technix™ Virtual Acoustics Experience™ (VAE) USG Assembly Builder™ All Design Studio Jul 28, 2018 · STC Ratings for Walls. Outdoor-Indoor Transmission . It should be noted that STC ratings obtained in a lab may be different than those achieved in real-world applications. Finish Rating — Min 20 min. Determine Target STCs. Class (or OITC) is a relatively. 00181 | REV: 11. What is a Good STC Rating? Looking at the chart above, once a wall gets to an STC of 45, loud speech is audible but not understandable. www. CAD/Revit Jan 6, 2025 · 4. The estimated ratings are based on laboratory test results from various compendiums of STC ratings. STC 45 wall assembly reduces incoming noise by roughly 45dB of sound, but STC should not be misconstrued as an exact measure of the number of decibels of sound an assembly can stop. Wood Stud Assemblies 60 51 54 57 62 STC 24” OC 4” Metal Studs Two layers 5/8” Gypsum Board each side Resilient Furring one side 3-1/2” Cellulose Spray • Test TL-94-024 24” OC 6” Metal Studs 4 Although STC rating roughly reflects the decibel reduction in noise for a particular assembly, i. 1+1 Drywall + Wall Blokker Lite: 52: Apartments, Condos: 2 Feb 19, 2024 · The lower the frequency, the more difficult it is to reduce the decibels that pass through the material. Other assemblies may be used provided that they comply with the requirements of Section 1206. UL UL U415 System C Shaft Wall, Steel Stud (Non-Load-Bearing) UL Wall Assemblies BIM - Revit Library Stc 51; Fire Rating 2 Hour; System Thickness 4-3/4" UL Assemblies / Wall / UL U314 . c. It consists of two stud walls with an air gap, 5/8″ drywall on each side, and sound batt insulation in both stud walls. Interior Steel Stud Assemblies STC Range 40-57 Pages 10-22 Interior Wood Stud Assemblies STC Range 36-66 Pages 23-31 Exterior Wood Stud Assemblies STC Range 35-39 Pages 32 Exterior Steel Stud Assemblies STC Range 43-52 Pages 33-37 May 19, 2023 · Adding more insulation can have a profound effect on a wall assembly’s STC rating because it adds sound-absorbing material to the assembly. This is ideal to use in a factory to sperate office space from loud manufacturing areas. Virtually every material—from furniture and wall and floor coverings to computer equipment— will affect sound to some degree. STC ratings provide valuable information for homeowners by offering them better insight into the Find and download resources for STC rated wall assemblies for your construction project. STC Wall Rating Chart. Also designed for wood-frame construction are USG Area Separation Fire Walls/Party Walls fire-rated gypsum drywall assemblies for multi-family housing (see separate System Folder SA925) and SHEETROCK Brand Vinyl-Covered Gypsum Panels (see separate Based on wall, window, and door Sound Transmission Classification (STC) values, the STraCAT generates a composite STC value for the wall assembly as a whole. They’re obtained through standardized tests that measure the decibel reduction provided by a wall or STC Rated Wall Assemblies Target Sound Transmission Classification (STC) Ratings are the recommended partition STC that will provide acceptable privacy and sound attenuation between spaces. Aug 30, 2023 · Wall assemblies with the same STC rating are not always equal in performance. Use it for high-rated Sound Transmission Class (STC) wall and ceiling assemblies, where sound transmission between rooms or dwelling units is a concern. In addition, each assembly references a ROCKWOOL test number, as well as the ROCKWOOL products included in the tested assembly. This rating system is called STC, sound transmission classification. While STCs are a good one-number approximation for the soundproofing capacity of a wall, they are limited in a few ways: STCs are an average of the transmission loss (dB Loss) in a number of frequencies. Find and download resources for STC rated wall assemblies for your construction project. less than assembly height. Products Applications Adding shear wall sheathing to a wall assembly can actually increase its acoustical performance in certain circumstances because it adds mass to the assembly. For uncompromised specifications, choose Wall Assemblies; Floor-Ceiling Assemblies; Roof-Ceiling Assemblies; Design Details; Fire Rating: 1 hours: System STC: 49 System Thickness: 4. huntsmanbuildingsolutions. Installing insulation within a wall or floor/ceiling cavity will improve the STC rating by about 4-6 dB, which is clearly noticeable. Floor and Ceiling Plates: The wall had two 89 mm (3. Here’s what different STC ratings mean for your soundproofing needs: STC 25-30: Normal speech can be heard clearly through the barrier. A total of four common roof assemblies and 15 wall assemblies were tested by Intertek Labs in York, Pennsylvania, in 2017. Visit UL U301 on the 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. 3½" mineral wool batts 5/8" Type X Gypsum Wallboard (H) 2¼" #6 Type S drywall screws @ 12" o. Chase Walls Assemblies. STC rating per California Office of Noise Control Assembly 1. It’s a relatively straight-forward proposition to achieve an STC 50 on a 25-gauge stud wall, but if the wall requires shear strength or structural load capacity, then the gauge size and spacing become a major hindrance. ) thick and UL Assemblies / Wall / UL U305 . In Canada, ASTC is the standard used. 15 Wall Assemblies. Our STC rated wall assemblies and STC ceiling assemblies are designed to provide effective soundproofing solutions for both residential and commercial spaces. Consult listed ˛re references for speci˛c gypsum board type and brand to obtain listed performance. In the examples below (figures 6 and 7 in The SoundBook), going from an uninsulated wall to an insulated wall boosts the STC rating 8 points. That being said, anything below an STC rating of 40 might garner comments about paper thin walls. UL U305 Interior Partitions, Wood Stud (Load-Bearing) Stc 36; Fire Rating 1 Hour; System Thickness 4-3/4" Stc 36; Fire Effects of Green Glue in a Wood Stud Wall . That’s where the STC rating comes into play. The field test however, does evaluate the entire assembly and includes all sound paths. 22 Wall Assembly Description: STC Rating: Application: Metal Stud: Wood Stud: Total Drywall Layers: 2×4 Wood Stud 1+1 Drywall with Wall Blokker: 41: Residential: X: 2: 25 Gauge Metal Stud 16in o. 11 of the LABC. 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. The world's most comprehensive collection of sound-tested, fire-rated assemblies. the wall is lower, the result is the STC for that wall assembly. STC Rated Wall Assemblies for architects and general contarctors. Repair Details. In general, a higher STC rating blocks more noise from transmitting through a partition. g. Understanding STC ratings for drywall can be complex. When discrepancies appear among laboratory plenums and suspended ceilings STC ratings for essentially similar assemblies, and unbaffled ducts when the discrepancies are above and below window to window (outdoors) STC 50, field testing may be required to common heating units assure that the building complies with the transoms and air grilles In 1961, STC was introduced as the method for comparing various wall, ceiling, floor, door, and window assemblies. Fire rating per GA WP 3380. By installing one brand of resilient channel in a particular wall assembly design and subsequently testing it against another brand installed in the same assembly design, acousticians can 3/4˝stucco mineral wool insulation 2x6 studs at 16˝o. OC max. 5. 5/8˝type x gypsum 2-sided lp ® flameblock sheathing v337 2-hour either side 2x4 studs at 16˝o. The STC rating is a lab test that does not take into consideration weak points, penetrations, or flanking paths. The assemblies are likewise suitable for wall furring and exterior soffit applications. Studs to be cut 3/4 in. A “good” STC rating is probably about 50 and can usually be accomplished with a standard wall assembly with insulation and Green STC is the standard of measure in the US for how well a buildings' interior walls, floors, ceilings, doors, windows, and exterior walls reduce sound from traveling. Visit UL U407 on Krieger’s industry-leading Cam Lift Hinge is included with higher STC-rated assemblies (doors with STC 45 or lower come with a standard or butt hinge). STC ratings are used in both floor and wall assemblies. Not all walls are the same, especially in terms of composition and material. 18W + 40 STC Ratings for Various Wall Assemblies Dec 18, 2023 · Above is a UL U493 wall assembly with an STC rating of 62. Sound Control For A Purpose Just like many other characteristics of a structure that can be optimized for the benefit of its occupants, better D-MAX WALL ASSEMBLY - EXTERIOR WALL SYSTEM NFPA 285 Approved Assembly AOITC 45 ® HBS | 11-2022. OC. However, designing wall partitions, ceiling systems and floor/ceiling assemblies for the distinct qualities of a space will achieve the most effective sound control. Testing done with full scale assemblies by National Research Council Canada. Sound Assembly Tool | Resources | PABCO Gypsum assemblies The new volume is a companion to The Purple Book® II, which includes more than 100 technical drawings, including fire-rated partitions, shaft wall assemblies, penetration details, head-of-wall details, firestopping options and more. Sound Transmission Class (STC) of Rated Partitions. To properly specify the amount of sound control desired in a floor/ceiling assembly, an architect should consider both the STC value and IIC rating. However, occupants could still be subject to awareness, if not understanding, of loud speech. Remember that lighter-gauge metal studs (25 gauge) improve STC performance by 4-7 points over thicker gauges. 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. Results: Sep 23, 2024 · Application of STC. Type X gypsum wallboard, which can have an estimated STC rating between 55-60 . 1+1 Drywall with Wall Blokker: 52: Apartments, Condos: X: 2: 20 Gauge Metal Stud 24in o. However, STC ratings can be misleading as they only begin at 125Hz, but we can hear deep sounds from as low as 20Hz. 5 hours: System STC: 45 System Thickness: 5. How Are These Ratings Obtained? Both IIC and STC ratings are essentially decibel ratings. Sound transmission reduction In single-stud walls, the most cost-effective sound control upgrade is to double the drywall on one side and add insulation to the cavity, increasing the sound transmission class (STC) from 33 to 40 (See Table of STC ratings of typical wall assemblies at left - click DISCLAMER: The type of gypsum board mentioned in the construction description re˚ects the type of board used in the acoustic test reports. This innovative gypsum board allows for construction of high STC wall UL U301 — Exterior Walls, Wood Stud (Load-Bearing) UL Wall Assemblies BIM - Revit Library Stc 56; Fire Rating 2 Hour; System Thickness 8-1/2" Aug 9, 2023 · The STC rating of a wall partition is the overall ability to resist the passage of airborne sound at 16 frequencies between 125 Hz and 4000 Hz. 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 Formaldehyde-free thermal/acoustical fiber glass batts. ” building ceiling and wall insulation assemblies. 5 in. STC 43* 15/ 8" (41 mm) steel studs: single layer 5/ 8" (16 mm) Type X gypsum board each side; one thickness The SoundBook® is the industry’s leading resource for technical details and sound-rated assembly drawings – all in one place. The intent is to categorize the relative performance of an assembly in impeding or attenuating sound energy as it passes through the […] Mar 4, 2020 · 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. ) wide by 38 mm (1. 2x6 studs at 24˝o. OITC. All assemblies include component descriptions, STC, OITC, and R-values (if available). The diagrams and STC ratings listed are intended to serve as a guide. 4 %âãÏÓ 934 0 obj /Linearized 1 /O 936 /H [ 973 718 ] /L 7142315 /E 89017 /N 175 /T 7123516 >> endobj xref 934 22 0000000016 00000 n 0000000791 00000 n 0000001691 00000 n 0000002150 00000 n 0000002233 00000 n 0000002324 00000 n 0000002409 00000 n 0000002508 00000 n 0000002568 00000 n 0000002694 00000 n 0000002754 00000 n 0000002874 00000 n 0000002934 00000 n 0000003050 00000 n 1206. ALLSTEEL & GYPSUM PRODUCTS INC — Type SUPREME D24/30EQD and Type SUPREME D20 Wall Assemblies; Floor-Ceiling Assemblies; Fire Rating: 0. Feb 9, 2021 · Table 1 One-Hour Fire-Resistance-Rated Loadbearing Wood-Frame Wall Assemblies Assemblies Rated from Both Sides Studs Insulation Sheathing on Both Sides Fasteners Details IBC Assemblya 2x4 @ 16" o. Results: Green Glue transforms the sound isolation of common wood stud walls from poor to excellent. To find the rating of a wall made of different assemblies (windows, doors, vents, etc. %PDF-1. Nov 7, 2016 · 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. 2A. Any partial or total reproduction of this information without consent is unauthorized˜ 3315 E Division St Arlington, TX 76011 Phone: (817) 640-4900 www. They include: Mass; Cavity absorption; Cavity depth; Stiffness; Decoupling; Damping STC 60 STC 51 METAL STUD ASSEMBLIES STC Ratings of wall assemblies INSULATED with Cellulose Spray. Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. CAD/Revit In general, loud speech can be understood fairly well through an STC 30 wall but should not be audible through an STC 60 wall. 5/8" gypsum board (type X) – 1 layer each side 3-5/8" steel studs (25 gauge) spaced 16" on center 3" thick ROCKWOOL AFB® Semi-Rigid Batt Insulation; STC 45 (lab test 4 #TL-93-335) Alternative STC 45 wall options Sources UL Wall Assemblies BIM - Revit Library EPDs and HPDs > NAIMA 3E Plus FAQs Equal Tee Stencil Stc 52; Fire Rating 2 Hour; System Thickness 6-1/8" Stc 52; Feb 27, 2018 · Use 25 gauge studs to improve the STC of your wall. 2. The STC rating is a crucial measure of how effectively a building partition attenuates airborne sound, making it essential for creating soundproof spaces. 4. Revit PDF. UL U314 Interior Partitions, Wood Stud (Load-Bearing) Stc 0; Fire Rating 1 Hour; System Thickness 4-3/4" Stc 0; Fire Jan 20, 2022 · What Is an STC Rating? The STC rating for walls refers to the “sound transmission class” of your foundation. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. You would have to do more serious calculations to find the right answer, or test the blanket + window assembly, but essentially you just need to know these two things: The STC rating of a soundproofing product is the rating of the product alone. WS4-1. com Page 7 of 7 AN: 22. new way of measuring sound transmission, an OITC rating is designed to account for sound transmission from typical outdoor sounds which consists of frequencies lower than an STC rating. Fire and Sound Resistance Tables Division B:Acceptable Solutions Division B W2f W2 with • no absorptive material • 12. Understanding STC Ratings for Drywall. STC is calculated by taking the Transmission Loss (TL) values tested at 16 standard frequencies over the range of 125 Hz to 4000 Hz and plotted on a graph. general wall notes: 1. WALL ASSEMBLY. Interior Steel Stud Assemblies STC Range 40-57 Pages 10-22 Interior Wood Stud Assemblies STC Range 36-66 Pages 23-31 Exterior Wood Stud Assemblies STC Range 35-39 Pages 32 Exterior Steel Stud Assemblies STC Range 43-52 Pages 33-37 –Can increase the STC rating of a double-layer, steel-framed partition from 29 to 53 STC –An integral part of high-performance CGC partition designs for attenuation of low-frequency sound from machinery and music –Suitable for use at the perimeter of fire-rated wall assemblies MICORE® Mineral Fibre Board The SoundBook® is the industry’s leading resource for technical details and sound-rated assembly drawings – all in one place. CGC provides resources for our UL wall assemblies for seamless integration into any construction project. 7 mm regular gypsum board(7) 45 min 1 h 34 W3 • 38 mm × 89 mm studs spaced 400 mm or 600 mm o. For jurisdictions employing the Limit States Design Method, such as Canada, a load restriction factor shall be used — See Guide BXUV or BXUV7 The Sound Transmission Class (STC) is a single number rating used to indicate the effectiveness of a construction assembly (a partition, wall, floor, or ceiling) in resisting airborne sound transmission. The STC value The STC rating of a CMU wall can be estimated based on its weight using the following formula: STC = 0. All SoundBreak products are part of National Gypsum’s PURPLE® family of high-performance drywall products that also provide superior moisture, mold and mildew resistance as Oct 10, 2024 · If the window has an STC rating of 30, the final STC with the addition of the blanket is not 65. The unique design of the Cam Lift Hinge offers enhanced radial strength, longer lasting performance, and easy maintenance. 12 of the LABC. nationalgypsum. PDF Feb 16, 2024 · A wall assembly with an STC 70 rating, for instance, indicates a high level of sound insulation. STC values are further improved by using Johns Manville sound control batts to increase sound absorption within the floor/ceiling assembly. CAD/Revit & Acoustics. All USG 1- and 2-hour rated floor assemblies are designed to meet the current International Building Code (IBC) and feature USG Levelrock® Brand and USG Durock™ Brand underlayments and USG Levelrock® sound attenuation products. ) Or search by the assembly number (UL design, or Gypsum Association file number) Then click on the Search button, and your results will be displayed below. PDF 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 Formaldehyde-free thermal/acoustical fiber glass batts. Top Ways to Increase Wall STC: STC value, the better the wall assembly is at reducing sound. These STC ratings represent common wall and door assemblies. The installed weight of concrete masonry assemblies can be determined in accordance with CMU-TEC-002-23 (ref. Conference Room/Classroom 2. When STC tests are performed, the TMS 0302 requires the testing to be in accordance with ASTM E90, Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements (ref. 5 STC values are logarithmic values and cannot simply be added Jan 10, 2025 · Precast walls will usually come with an STC rating to save you the trouble of how determining the STC rating of a wall yourself. These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. This STC Wall Calculator estimates the Sound Transmission Class (STC) rating of a wall assembly based on various materials and configurations. Wall Assemblies; Floor-Ceiling Assemblies; Fire Rating: 2 hours: System STC: 56 System Thickness: 8. 25 in. STC Ratings of wall assemblies insulated with Cellulose Spray. PDF. STC 43* 15/ 8" (41 mm) steel studs: single layer 5/ 8" (16 mm) Type X gypsum board each side; one thickness Jun 19, 2020 · STC Improvements and Corresponding Costs – In most wall assemblies, the addition of a soundproof membrane will be much more cost effective for improving STC rating than adding multiple layers of drywall to a partition. This document An introduction to key terms, strategies and noise attenuation assemblies 1. 1 15-1. vdj nomu hblttv nbqigc byfq gozvxv kgxpx avuxe tusvw rhqp tfv gkpod fdrv jagkq mzqkqs