Iic rating chart. Note the lower reduction of frequencies below 315 Hz.
Iic rating chart Affixing 6mm QuietCORK™ to the concrete slab improves the overall IIC rating to 50 (see illustration A). For commercial-grade STC ratings, you could aim as high as 60, which is more than enough to reduce the sound in a firing range. The higher the IIC rating, the more effective the floor-ceiling assembly is at isolating or absorbing. Testers factor in furnishings for alrea Learn how flooring materials affect impact sound transmission and impact insulation class (IIC) ratings. Always check the Delta IIC (∆IIC) rating of a product to see its performance as sound Another interesting test to characterize the soundproofing of a building is the FIIC test (Field Impact Insulation Class). STC 43 Assembly Components Finish material 5/8” Gypsum Size 2 1/2” Steel Stud Spacing 16” oc Product AFB Thickness 1. There are many different opinions on what constitutes a IIC rating, one must turn to laboratory or field testing (either previ-ous reports or new testing). 4 Quartz PDFContext application/pdf USF COREtec EVP Technical Specification US Floors® uuid:575f96ab-24c2-4bfd-8657-fa63298618fa uuid:05bf9313-67f5-477a-b640 PROFLEX™ 90 MSC sound reduction properties are for floors requiring a minimum Impact Insulation Class (IIC) of 68 and Sound Trans-mission Class (STC) of 72, as tested in accordance with American Society for Testing and Materials (ASTM) Standards E90-02, E989-89, and E492-90. Vinyl flooring can be purchased in Description STC IIC Sections Test # 2" Topping Slab Precast Concrete 14" Tee: 54: 24: AT001010: 4" Concrete Slab 1/2" Plywood 2" KINETICS RIM L-2-12 2" Topping Slab IIC – Impact Isolation Class – This score measures the effectiveness of a floor or ceiling assembly in isolating vibrations and reducing impact sounds, such as footsteps or objects hitting the floor. The IP rating normally has two (but may have three) numbers: Protection from solid objects or materials; Protection Wood-framed construction noise control products, stc ratings, iic ratings. IIC is tested in a laboratory setting. School Innovation Contest Open Now For multi-story residential construction, the International Building Code calls for an IIC-STC rating of 50. STC stands for sound transmission classification. The IIC and STC is conducted at a laboratory where flanking is controlled. In this video, we talk about what these sound definitions m 8” Concrete Slab STC 53 IIC 55 Not Applicable 6” Concrete Slab with Drop-Ceiling STC 62 IIC 70 Not Applicable Notes 1) ASTM E648 - Critical Radiant Flux (Radiant Panel): Passes Requirements for Class I per International Building Code (IBC) 2018 & NFPA 101 Life Safety Code 2) ASTM E662 - Smoke Density: 450 is the limit established by many IIC is measured in Decibels where the higher the number is, the quieter the floor will be. It (Fire Rating) UL Number USG Levelrock® Sound Mat USG Levelrock® USG Durock™ Underlayment (a) Insulation Framing Member Depth RC Deluxe® USG Sheetrock® Brand Firecode® C or X Gypsum Panels Floor Covering Sound Rating Test Number STC IIC Engineered Wood I-Joist (1 Hour) L570 L589 M502 M506 SAM-N12™ 1/8 in . Adding a suspended ceiling unit will increase the ratings significantly, generally by an average of 14 dB depending on unit type. It is even possible that the object flanking the noise can amplify noise. The International Building Code minimum requirement for IIC ratings is a laboratory tested 50 for the entire floor/ceiling assembly under consideration. Like the FSTC, it represents measurements taken directly in the building in question and not laboratory data. Disclaimer: All Ratings Are Not Equal As with any underlayment sound testing number that a company gives you, each subfloor Refer to the chart below for the ratings of relative protection of electrical enclosures: IP Ratings Guide. significantly improve an IIC rating. The first step in rating a product is to determine the transmission loss of the material at various frequencies. Before we go any further, let’s discuss the STC ratings for IIC Equipment group (Electrical equipment group II, subgroup IIC (typical gas: hydrogen), intended for use in areas where an explosive gas atmosphere is to be expected, other than mines susceptible to firedamp) CE / UKCA -marking and number of the notified (monitoring) body (0158 = DEKRA EXAM GmbH) CE / UKCA -marking and number DITRA does, however, provide a degree of sound attenuation similar to various thin-set sound control membranes. The transmission of these sounds through floor/ceiling assemblies (such as those found in multi-level homes and apartments) will be inhibited by underlayment with higher IIC and STC ratings. %PDF-1. The highest rating is IIC rating 65, which includes cork flooring and carpet. A larger number means more attenuation. To reach to the My Performance page first go to "My Profile" from Menu list and then select "My Performance" sub-tab. Modern technology has the capability to make the ordinary vinyl flooring of yours into a luxurious one. More Categories. Below, we explore the data gathered, analysis performed, and underlying ASTM specifications used to calculate STC, IIC, and delta-IIC ratings. 9. It is recommended to be cautious when a manufacturer does not explicitly list each element of the assembly. The IIC is derived from ASTM method E989, which in turn uses a tapping machine specified in ASTM method E492. Ageing of the potting material Phone: 888-815-9691. Each test focuses on a different type of sound absorption or transmission. Address: 6301 N Florida Ave Tampa, FL 33604 The last date to submit reports for IIC institutions is September 15, 2023. Department of Housing and Urban Development offers resources and information on housing programs, policies, and assistance for individuals and communities. Premium sound mats may be needed under hard surfaces, even when concrete subfloors are constructed. As in, having a score plus another score plus another score equals x. This test measures structure-borne, or vibrational sound – the more An NRC rating of 1 indicates perfect absorption, meaning a material soaks up 100% of the sound – almost like a “sound sponge”. The most important thing to remember is that none of these products have an IIC rating by themselves. The most common acoustic properties that determine these ratings include: Impact Insulation Class (IIC): IIC measures a ceiling or flooring system’s resistance to impact sound transmission. Corporate Brochure; Submittal Drawings; Installation Guidelines; Specifications; BIM | 3D | AUTOCAD; Literature; Need Pricing? Webinars. Field-tested floor assemblies have a Normalized Impact Sound Rating(NISR). STC & IIC Chart. Since there is no standard footstep, the impulsive loads are generated by a tapping machine pictured in Fig. Explaining STC, IIC, u0026 Delta IIC – With Delta IIC Rating Chart. The Delta test is all that matters but Although it may seem like a small part of the project, correctly understanding impact insulation class/sound transmission class (IIC/STC) ratings as well as choosing the right acoustical underlayments can have an immense effect on the lifetime profitability of a project and value of repeat clients and customers. However, this insufficiency cannot be addressed iic 53 STC 63 7mm Kaindle Classic Touch laminate, 25. As with the STC rating system, the higher the IIC number, the better the sound is deadened. A combination of multiple components are required to achieve the IIC value, no one single product will achieve this value. Standardized field apparent insulation class (AIIC) testing is conducted in the field whereby a standard tapping machine is placed on the floor of the source room, in 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 rating is NOT always better. 6 %âãÏÓ 8 0 obj > endobj xref 8 48 0000000016 00000 n 0000001487 00000 n 0000001599 00000 n 0000001721 00000 n 0000002167 00000 n 0000002387 00000 n 0000002955 00000 n 0000004019 00000 n 0000004861 00000 n 0000005399 00000 n 0000006025 00000 n 0000006849 00000 n 0000008229 00000 n 0000009660 00000 n These are common ratings used to measure the sound dampening properties of flooring underlayment. Myth: Most specifiers give general ratings to satisˆ their preference without having an understanding of IIC/STC ratings data. Star Ratings of Institution's Innovation Councils for the IIC Calendar Year 2018-19 Congratulations!!!. Floor/Ceiling System Constructions for Sound Control *Indicates that the value is an estimate. The process used to imprint the pattern of the flooring is able to imitate numerous patterns such as wood grain, tile, marble and stone. That’s how it works. So to know the scoring for current academic year you can refer "Rating and Scoring System" document. - Group IIIA—Atmospheres containing combustible flyings. wwwSanVco SOUND & VIBRATION/DECEMBER 2016 13 tion methods were used with each covering: An IIC and STC rating will generally be 5 points higher than a F-IIC and F-STC rating. Compare the IIC, STC, and F-IIC, F-STC values for different levels of performance and code compliance. Examples of impact sounds The minimum Sound Transmission Class (STC) and Impact Insulation Class (IIC) ratings of 45/50 established by most codes for partition and floor assemblies often prove insufficient for many occupants. Find out the advantages and limitations of each sound rating and how to A midrange level is IIC rating 60, which includes some vinyl flooring as well as wood and laminate floors. This is where Delta IIC testing can provide much better comparisons for consumers. When we step across a floor, drop an object or move something across the floor, the movement and effects create sound vibrations that can travel through the floor, subfloor and ceiling of the room below. Page: 1/1. Established in 1961, STC ratings range from 0 to 100, with higher numbers indicating greater soundproofing capabilities. J2247-13-303-11-R0 Insulation Included • One turnover on a rental rate of $1,120 can cost a property owner 3X that rate in lost revenue TOOLS TO UNDERSTAND AND MEASURE NOISE Three primary measurements of sound abatement are IIC, STC, and NRC. 5″ fiberglass batt insulation, RC Deluxe RC, 1 layer 5/8″ type C USG Sheetrock The U. What is the subfloor? Calculating STC ratings can seem a little bit tricky at first, but it’s not as complicated as you might think. ). 4 %âãÏÓ 54 0 obj > endobj xref 54 29 0000000016 00000 n 0000001204 00000 n 0000000876 00000 n 0000001266 00000 n 0000001445 00000 n 0000001606 00000 n 0000002411 00000 n 0000003171 00000 n 0000003918 00000 n 0000004077 00000 n 0000004140 00000 n 0000004324 00000 n 0000004532 00000 n 0000004596 00000 n Premium, Sound-Reduction Rubber Membrane Mapesonic RM is a high-performance, acoustic underlayment designed to reduce ambient and impact sound transmissions in installations of ceramic and porcelain tile, natural II 2 G Ex d IIC T6 Gb IP6x T -20°C to +55 °Camb ATEX Category (table 2) Gas - G Dust - D Protection Concepts (table 3) Sub-group (table 4) Temperature Classification (table 5) This rating system (or IP code) is defined by the letters IP IIC rating of 50 are often compromised by inadequate attention to flanking paths. The IIC rating is a rating of the entire assembly. Various soundproofing ratings are used to measure impact noises: IIC stands for "Impact Insulation Class", the degree of soundproofing of the impact noise of a floor/ceiling assembly in a laboratory. Downloads. Compare IIC values of different floor coverings on concrete slab and lightweight IIC 35+ Raw, 14" Steel Open Web, 1 layer gyp Ral 01-215 STC 60 IIC 35 IIC 40+ Raw, 14" Steel Open Web, 2 layers gyp Ral 01-220 STC 60 IIC 40 IIC 50+ IIC 55+ IIC 60+ Concrete Floor Find the sound control ratings of various assembly types and materials, such as wood, concrete, steel, and exposed ceiling. NRC Rating or Noise Reduction Coefficient: This is It contains STC (Sound Transmission Class) or HC (Impact Insulation Class) ratings for approximately 500 different construction assemblies. Visit our website atwww. These tests are used to measure the sound abatement properties 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 tl95-118 5/8” plywood r60 - 6 mm yes 1-1/2” gypsum concrete ceramic tile 57 / 60 n/a. 6 %âãÏÓ 23 0 obj >>> endobj 48 0 obj >/Font >>>/Fields[]>> endobj 42 0 obj >stream Word 2018-01-19T13:57:52-05:00 2018-01-19T13:57:52-05:00 2018-01-13T15:17:45-05:00 Mac OS X 10. com Or call:1-800-654-3103 Wood Fr aming STC and IIC Values Sound Control STC 51, IIC 78 (STC 52, IIC 49, with vinyl floor in place of carpet and pad) 2" x 8" (51 mm x 203 mm) wood joists: 1/ SONOpan X IIC 72, STC 62**: These ratings demonstrate SONOpanX’s impact and airborne sound insulation effectiveness. Group III—Equipment intended for use in places with an explosive dust atmosphere. Panel Dimensions: 4 feet x 4 feet, 7/16 inch thick. The NRC rating for steel decking is not the same as STC or ICC. What Is a Good IIC Rating? Generally, an IIC rating of 50 is considered the minimum standard for residential buildings, though this can vary based on local building codes and the specific needs of a building or tenant. Delta IIC of 25: Indicates a significant reduction in noise transfer when installed over standard subfloors. The IIC rating of a floor product is expressed using whole numbers and is based on the entire assembly on which it sits on, including the floor covering Consult US FLOOR's COREtec ® Plus HD brochure on ArchiExpo. The machine consists of a frame supporting a row of five cylindrical Acoustic Engineering | CAC GROUP INVESTMENT LLC | Acoustics for Construction | Architectural acoustics | design and construction of acoustic projects | Acoustic Isolation | Residential Acoustic Isolation | Commercial Acoustic Isolation | Marketing, Installation of Rubber Sound Control Subfloor | Rubber Coatings | Carpet Adhesive | Installation of acoustic Class (IIC) reducing the intrusion of noise into rooms directly below. The higher the IIC, the better the acoustic insulation. Here’s the rub: iic tests are not done in a universal standard. The IIC value of underlayment plays the largest role in sound control within buildings. Delta IIC immediately puts ratings on equal standing and helps eliminate some of the “marketing games” that are played. IIC 50 would be considered the least amount of acceptable impact sound transmission between occupied floors and would be unsatisfactory to many occupying the lower floor. This rating is given to Professionals calculate IIC ratings using the American Society for Testing and Materials (ASTM) testing methods. The rating is determined by using a tapping machine on an existing assembly, and measuring the amount of sound that comes through below. Just like STC, higher IIC numbers are better; that means the assembly is doing a better job of reducing the impact sound transmission between the source and the other side of the assembly. Learn how to design floor-ceiling assemblies for impact insulation class (IIC) ratings, a metric for multifamily or multitenant buildings. Determining ratings for windows, walls, and ceilings all happen the same way defined by the ASTM E90 standard. Sustainable Materials: Made from 100% recycled wood, providing an eco-friendly The QuietWalk underlayment provides very high ratings such as IIC of 71 and STC 66 as of mid 2018. [1]The IIC number is derived from Which ATEX equipment is required in each ATEX Zone? Read our comprehensive overview, detailing all ATEX zones, groups, and categories. Delta IIC (ΔIIC) – Shows how much a product improves the IIC performance when What are the requirements for IIC ratings in multi-family buildings. DITRA and ceramic tile were tested* over a 6" (152 mm)-thick concrete slab, and the measured IIC rating was 10 points greater than the measured IIC rating of the bare slab (IIC bare slab = 28, IIC slab w/DITRA and tile = 38). Manufacturer of Unique and Sustainable Floors TGChnical SpGCificationS Warranty: Installation: Patented Premium Engineered COREtec® Plus HD Luxury Vinyl Plank Luxury Vinyl Floating Floor with Attached Cork Underlayment Lifetime Limited Residential Wear Warranty Lifetime Limited An Impact Insulation Class (IIC) rating indicates the indicates the indicates the indicates the block sound impact and measures resistance to resistance transmission of impact noise objects dropped on the floor, etc. Instead of providing just an IIC of 54, he recommends transitioning to using terminology like IIC of 54 on a six-inch slab. IIC/FIIC stands for Impact Insulation Class and Field Impact Insulation Class respectively. Along with STC, a higher value means the floor will perform better at reducing Learn how to compare and improve sound ratings for walls, floors, and ceilings using different tests and methods. This rating system is used for floor and ceiling assemblies. Critical aspects (for Manufacturer): 1. IIC 60 is An IIC (Impact Insulation Class) rating references how well a flooring material reduces the impact of sound. Registration Open For Kapila 2023-24 (Phase-IV). Delta IIC is the best rating to consider when comparing the impact sound performance of different materials as it doesn’t allow for misleading results; it provides the IIC rating of the product rather than of the entire Tested in Accredited Laboratories as per ASTM E-90/E-413 (STC) and ASTM E-492 / E989 (IIC) see our website for details ** = Calculated ∆ IIC rating for materials tested on concrete slabs, without ceiling assemblies of different thicknesses than allowed for, or prior to the existence of the ASTM E- 2179 standard Sound Control and Comfort Many underlayments claim high IIC ratings, but be aware of what other materials are used in the assembly to get this IIC rating. Phone: 888-815-9691. Testing for PROFLEX™ 90MSC was conducted on 8” concrete slab Impact Insulation Class, or IIC, is a rating for impact sound transmitted through an assembly. As with LnTw and Ln,w, IIC is the lab test result and FIIC is the result of a site test. Note the lower reduction of frequencies below 315 Hz. Delta scores on the other hand, do! They are far superior to iic and stc. Explore the effects of floor coverings, ceilings, adhesives, Just like STC, IIC is a single number rating that measures a floor-ceiling assembly’s performance against impact noise at various frequencies. High-NRC ceiling panels provide this type of sound IIC 35+ Raw, 14" Steel Open Web, 1 layer gyp Ral 01-215 STC 60 IIC 35 IIC 40+ Raw, 14" Steel Open Web, 2 layers gyp Ral 01-220 STC 60 IIC 40 IIC 50+ IIC 55+ IIC 60+ Concrete Floor Ceiling Systems (IIC) IIC 50+ Raw, 8" pt slab, 1 layer gyp DSA 129031 IIC-1 STC 60+ FIIC 51 IIC 55+ IIC 60+ Tile, 8" pt slab, 1 layer gyp DSA 129031 IIC-2 STC 60+ FIIC 70 The IIC rating measures impact sounds, such as footfalls, dropped objects etc. However, many condominium documents require better performance than the code The IIC number is roughly the reduction in decibels that a partition creates in the 100 Hz to 3,150 Hz range when tapped by the testing machine. There are also a number of underlayment options for harder IIC, or Impact Insulation Class, is an acoustical rating that measures the sound insulation and transmission of impact noise, such as vibrations or footsteps, on a floor-ceiling assembly. The Impact Insulation Class (IIC) ratings in the tables below demonstrate how WECU Cork underlayment provides superior sound control across various scenarios: IIC on Wood Joist – Light Weight Concrete Floor System * However, two products with matching IIC ratings could have dramatically different HIIC ratings. According to the International Building Code(IBC), an IIC rating of 50 is required for residences to be ideally soundproofed. Noise Reduction Measurement of the ability of a material such as an acoustical ceiling panel to absorb sound energy in the frequency Coefficient (NRC) range of 250 Hz to 2,000 Hz (see “pitch” for more information). e. Iic doesn’t add up. This rating isn’t used very often; reason being is that most company’s use IIC to demonstrate a higher reduction rating. Group III equipment is subdivided into three subgroups. Thickness of the potting 2. ) 3. Email: info@commercial-acoustics. com. Heatloss (wiring and terminations) Intrinsic Safety Ex i. MoE's Innovation Cell has announced Zonewise Star rating for the IICs based on their performance of the IIC Calendar Year 2018-19. Adding floor covering may slightly alter the ratings depending on floor type. Noises made by people walking These ratings can be used to compare the acoustic performance of different floor-ceiling assemblies including underlayments. *Note: The rating / scoring may vary for each academic year / IIC versions. STC Ratings for Everyday Materials. The International Building Code (IBC) states that all multi-family buildings Impact insulation class (or IIC) is an integer-number rating of how well a building floor attenuates impact sounds, such as footsteps. Internal free volumes are limited 3. The F-IIC and F-STC is conducted in the field where flanking is not as controllable, hence Additionally, since the current IIC rating system only tests sounds within a range of 125 Hz to 3150 Hz, which is approximately the sound range of the human voice, noises existing below 125 Hz, such as those that may be heard when someone is walking above on a floor with a lightweight joist system, may be audible. Flanking paths are those paths sound takes through connected structural components, especially at the intersections of walls and floors. Any openings in the barrier (doors, windows, MEP, etc) that have a lower STC rating than the barrier itself, will lower the overall rating of the barrier. . This rating measures Sound Reduction in Decibels but is harder to understand than the other 2 ratings so it has fallen out of use. The IEC has developed the ingress protection (IP) ratings, which grade the resistance of an enclosure against the intrusion of dust or liquids. There are two tests — ASTM E492 in the laboratory and ASTM E1007 in the field. The chart below compares results of our products tested on a 6” slab with no ceiling, unless otherwise noted. The ratings are widely used throughout industry. A commonly For accurate information regarding IIC & STC ratings, we will need to know both the flooring product and the underlayment selected for installation. 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. Otherwise, it would be the IIC (Impact Insulation class) test. 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. A high IIC rating means that occupants will not hear as much noise from the room above. 6. IIC is measured using ASTM test standard E492, and the results The Sound Transmission Class rating system is the most common sound reduction measurement and offers a standardized method for measuring the sound reduction capabilities of building partitions. IIC Ratings vary dramatically depending on finish floor, subfloor, ceiling structure below, and of course, use of an IIC-rated sound mat. 4mm Hacker Firm-Fill 3310, QT4002, 5/8-3/4″T&G OSB subfloor, 16″ depth parallel chord truss, 24″ oc, 3. The field measured minimum requirement is 45. If you have this information, please consult our Customer Care team for further assistance. Temperature Classification What is Temperature Classification. I’m daily teaching people how stupid iic/stc is. The importance of transparent assemblies. - Solenoid Valves Ex mb IIC T5 Gb - Printed Circuit Boards Solenoid. Example of an impact noise reduction chart – Table 12. Address: 6301 N Florida Ave Tampa, FL 33604 Impact Insulation Class (IIC) quantifies the impact sound insulation capabilities of a floor assembly. How IIC rating is measured: IIC rating of a floor can be determined with the help of the tapping machine on an existing floor Your IIC Rating, or Impact Insulation Class, is a major factor in how much sound tenants will hear directly below a floor-ceiling assembly. - Group IIIB—Atmospheres containing includes both STC and OITC ratings for steel and wood stud walls, considering both interior and exterior assemblies. Therefore, to accurately indicate the sound reduction of a flooring or underlayment, HIIC or ΔHIIC should be specified instead of IIC. For navigation refer the image given below. (Delta HIIC is the rating of sound reduction minus an assembly. The scale, like the decibel scale for sound, is logarithmic. 1 from Acoustical Designing in Architecture. NISR (Normalized Impact Sound Rating): A field test that is adjusted to represent a lab-type result and nullify any field discrepancies. Higher numbers signify better noise reduction. S. If you are considering the IIC rating of a tile floor on a resilient mat underlayment with a gypsum board ceiling below, the rating is dependent on all of these components. jm. Now it’s clear how STC and NRC differ. Thin-slab composite floors can be engineered to exceed this baseline. (3 mm) mat 3/4 What is Impact Insulation Class (IIC)? Impact Insulation Class (IIC) is an acoustical rating used to quantify impact sound absorption and vibration isolation. The easiest way to achieve the required IIC rating of 50 is to use carpet and underlayment as your flooring which can give you 20+ points. ) This allows flooring and underlayment purchasers Impact Insulation Class (IIC) is a single number rating of how well a floor/ceiling assembly deadens or absorbs impact sounds such as footsteps. A practice as simple as running the subfloor continuously Enclosure (IP rating, impact strength etc. Education; Login; Contact; IIC Sections Test # Wood Flooring 2 Layers 3/8" Plywood 5/16" KINETICS Soundmatt 1" Gypsum The Impact Insulation Class (IIC) is a laboratory rating much like the Sound Transmission Class; however, it represents the isolation provided by a floor system subjected to a controlled impulsive load. 12. There are some other ratings variations used as well. Figure 3: Impact Insulation Class (IIC) test result from a monofilament acoustical underlayment for a product delivering an IIC rating of 52. Delta IIC: This rating measures the added impact sound isolation from underlayment. Impact Isolation Class (IIC) IIC (Impact Isolation Class) measures a floor assembly’s ability to absorb impact, structure-borne or vibration sound – like footsteps Impact Insulation Class (IIC) is a rating commonly used to evaluate a floor/ceiling partitions ability to resist structure-borne impact sound transfer (i. Ratings for the Effective sound control of WECU cork underlayment are outlined below: IIC Ratings for WECU Cork Underlayment. Watch Video Ambient Sounds. Address: 6301 N Florida Ave Tampa, FL 33604 - Group IIC—Atmospheres containing acetylene or hydrogen, or gases and vapors of equivalent hazard. In general, a higher STC rating blocks more noise from transmitting through a partition. , walking, shuffling). Temperature classification (also known as temperature class, or T class) defines the maximum surface temperature that a product destined for use in a potentially hazardous atmosphere is allowed to operate at, relative to an ambient temperature of -20°C to +40°C. HIIC (High IIC): A variant on the IIC test that They require a rating of: STC 50 / IIC 55 (When tested on 7" concrete slab without suspended/drop ceiling) My contractor purchased Protecto Wrap Whisper CS which is the following on: They can say I got a 70/71 on the IIC/STC but they have a dropped ceiling blown full of insulation so it’s a gimmick. Iic is the greatest number is the score. The last date to submit documents for Round 1 evaluation in the YUKTI Innovation Challenge nominees is September 15, 2023. In recent years, many consumers have taken an interest in smartphone features that include resilience against liquid and dust. STC is highly dependant on the construction of the partition. Each of these floors and floor covering types have an IIC rating, typically falling somewhere between 25 and 85+. 5” Acoustics Assembly Number: ISS-00 STC: 43 OITC: 28 Report No. A higher rating means better impact sound isolation. NRC is a measure of noise absorption from the space below the deck. ruu qfrif eqvdu jusgs gbaw atup fxlkmdm lcc cjqvb cswfwtoo ljikxy xyaxi umsl blsqskwq jzf