Bids Are Invited For Fabrication Of Soundproof Lab Total Quantity : 1, DELHI-Delhi

Bids Are Invited For Fabrication Of Soundproof Lab ---1 Side Paneling: For Room Size 18Ft X 12Ft X 12Ft ( Approx ) 1A 80Kg / M3 ( Acoustic Material With Nrc 0.9 Or Better ) . A: ( Jsw / Tata ) Gi Galvanised Iron Box Panel Frame Work Of 24 Gauge Perforated To An Extent Of 70% And Of 4 Inch Thick Box Panels Of ( 2 Feet X 2 Feet ) In Dimension. 1B The Panels With 100Mm Thick Box Panel Should Have Infill Acoustic Material Density Varies From 50 & 1C The Material Should Have The Ability To Attain 50% Insertion Loss And Attenuate Incident Sound Energy From Frequencies That Are Concentrated In The 125 To 8000 Hertz Range To Meet The Ansi Standards. 1D The Extemal Surface Having Cladded With Noise Reduction Coefficient Rated Fabric With Nrc 0.9 Or Better Above The Grooved Wooden Slats & The Encapsulated Panels Will Be Secured To Floor With Mild Steel Track Framework Made Up Of 16 Gauge Of U Channel Approx Size ( 20Mm X 105Mm X 40Mm ) And Fasteners Complete. Grooved Wooden Slats Upto 4Feet Above The Floor Having Nrc 0.9 Or Better. 2 Ceiling Paneling: Similar To Wall Paneling With Additional Layer Of 2Mm Thick Sound Damping Layer At Innermost Layer 3 Floor: Acoustic Floor Shall Be 80Mm Thick Made Out Of 2X2 Ft Grid Framework Filled 19Mm Thick High Quality Plywood Sheet. Further A 3Mm Thick Acoustic Underlay ( Mass Density 1000Kg / M3 ) Shall Be Provided Which Should Be Covered With 6-8 Mm Thick Loop Pile Carpet. The Material Attenuates Waves 125 To 8K Hz And Less Interference From Low Frequency Sound. Soft Carpet Should Be Laid Over Final Finish. 4 Door Frame: 19Mm Plywood / Hardwood Type, Cladded With Layer Of 3Mm Thick Non-Woven Carpet. Groove To Facilitate Perfect Sealing Of The Door Shutter. Double Doors Frameworks And Single Door Frameworks Constitute This Requirement 5 Double Door: Each Door Leaf Will Be Of 2Inch Thick Double Layered 12Mm Plywood With Frame Work Of 19Mm Plywood Which Will Be Insulated Internally With Material Of Mass Density 96Kg / M3 Or Better. The Face Of Door Should Be Covered With 3Mm Non-Woven Carpet / High Quality Laminates. High Quality Door Handle, Closer And Lock Shall Be Provided. Performance: The Soundproof Lab Shall Be Designed To Achieve Noise Level 30 Dba Or Less As Per The 6 Testing Requirements. 7 Design Standard: Sound Lab Is Designed Considering The References From Below Test Standards: Iso 3745:2012: Acoustics - Determination Of Sound Power Levels And Sound Energy Levels Of Noise Sources Using Sound Pressure - Precision Methods For Semi-Anechoic Sound Labs. 8 Standards Of Acoustical Products / Treatment Utilized Ba Wooden Acoustic Door: Acoustic Enclosures Door Panel Must Have Stc Rating 45 As Per Is:9901 ( Part-Iii ) -1981, Din: 52210, Part Vi-1989, Iso: 10140 ( Part I ) -2016 Acoustic Wall Paneling: Acoustic Enclosures Wall & Ceiling Panel Must Have Stc Rating 44 For Airborne Sound Insulation As Per As Per Is: 9901 ( Part-Iii ) -1981, Din-52210 Part-Iv-1984, Iso: 140 Part-Iii-1995. Bc 9 Absorbing Medium: Is 8183 / Bs 476 Sound Dampening Layer For Walls, Floor And Ceiling: Vss 302 Pass And Ul 94, & Iso 717-1 Ventilation: Providing Silenced Ventilation System For Soundproof Room Lab To Maintain The Working / Testing Temperature Requirements. There Shall Be Cassette / Suitable Ac With Required Ducting And Ventilation Grills. 10 Electrical: Wiring & Sockets ( Modular Fixture & High Quality Wires ) For Required Number Of Points For The Test Apparatus To Function And For The Illumination. 20 Nos Of 10 / 15Amp 12 Nos Of Lighting Points 8B Total Quantity : 1

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