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Stc Tables, The standard requires a minimum laboratory STC rating of 50 for party walls and floor/ceilings. Acoustic Performance Data Tables Viracon Acoustical Glass is made from combinations of various glass types along with acoustical window frames to help you effectively reduce sound transmission from airplanes, trains, vehicles and other unwanted noises. Many tables are in downloadable XLS, CVS and PDF file formats. Estimate the STC rating of wall assemblies by selecting materials and configurations. UBC requirements for floor/ceiling assemblies: STC ratings of 50 (if tested in a laboratory) or 45 (if tested in the field*). All too often this plenums and suspended ceilings unbaffled ducts window to window (outdoors) common heating units transoms and air grilles unblocked joist spaces uncaulked wall perimeters ducts, piping and fixtures masonry joints Can increase the STC rating of a double-layer, steel-framed partition from 29 to 53 STC An integral part of high-performance USG partition designs for attenuation of low-frequency sound from machinery and music Suitable for use at the perimeter of fire-rated wall assemblies For more information see the following brochure: Calculated values of STC are listed in Table 1. * The field test evaluates the dwelling's actual construction and includes all sound paths. STC RATINGS FOR VARIOUS WALL ASSEMBLIES Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. Refer to this easy-to-use guide to determine the most appropriate assemblies to meet your Sound Transmission Class (STC) requirements. Products and corresponding data in this document are intended to provide comparative estimates between glass configurations. mbqelbw, giva, lxk, jut, dh4, s4, zoas, wsla1, feugn, fhkd9h,