Department Of Electronics And Information Technology Tender

Supply and Fixing of 4-Layer Sound Absorption System on Ceiling Supply and installation of a four-layer acoustic treatment system on the ceiling to enhance overall soundproofing and acoustic absorption, targeting both low-frequency noise isolation and reduction of airborne sound, echo, and reverberation. Layer 1: Low-Frequency Sound Absorber (Base Layer on Ceiling) Material: 20 mm thick polyurethane-based sound absorber, composed of open-cell and closed-cell acoustic foams. Noise Reduction Coefficient (NRC): ≥ 0.95 Density: 100 kg/m³ Fixing Method: To be fixed directly on the ceiling using Fevicol Heatx adhesive and nails. Brand/Model: MMT Acoustix – BassBloc (Bass Absorber) or approved equivalent Layer 2: Vinyl Noise Barrier Membrane Material: 2.5 mm thick vinyl noise barrier membrane system made from rubber and resins. Sound Transmission Class (STC): Up to 28 dB Density: 2100 kg/m³ Fixing Method: To be fixed over Layer 1 using Fevicol Heatx adhesive. Brand/Model: MMT Acoustix – Sound Blanket (MLV Noise Barrier) or approved equivalent. Layer 3: Suspended Acoustic Cavity with Polyester Wool Material: 18 mm thick marine plywood framework suspended 2 feet below the existing RCC ceiling using a marine-grade wooden structure. Cavity Fill: The depth of the framework shall be completely filled with 50 mm thick, 1500 gsm polyester wool. Noise Reduction Coefficient (NRC) of Polyester Wool: ≥ 0.98 Layer 4: Polyester (PET) Acoustic Panels Material: 9 mm thick PET acoustic wall panels. Noise Reduction Coefficient (NRC): ≥ 0.30 Fixing Method: Fixed over Layer 3 using Fevicol Heatx adhesive. Brand/Model: MMT Acoustix – Echsorbix (PET Acoustic Wall Panels) or approved equivalent.

Supply and Fixing of Acoustic Door with Frame Supply and installation of an acoustic door with frame, designed to provide effective sound insulation for enclosed spaces. Door Construction: Core Material: 18 mm thick marine plywood in a sandwich configuration Infill: 50 mm thick, 1500 gsm polyester fibre for enhanced acoustic insulation Outer Covering: Layer 1: 20 mm thick BassBloc sound absorber Layer 2: 2-inch thick acoustic foam panel Perimeter Sealing: Fix soundproof rubber seals along all four edges of the door for airtight acoustic sealing Size: 90 cm x 200 cm Hardware: Includes standard steel lock and handle Door Frame: Material: 18 mm thick marine plywood Finish & Installation: Properly finished, leveled, and secured to ensure perfect fit with acoustic sealing performance All materials used shall be from approved brands only. Workmanship shall ensure tight sealing,durability,and soundproofing performance. The complete assembly must comply with standard acoustic door design practices.

Supply and Installation of Acoustic Floor Carpet Supply and installation of an 18 mm thick acoustic floor carpet to enhance sound absorption and reduce impact noise in the designated area. Material: 18 mm thick acoustic floor carpet Color & Make: To be of approved color and brand as per the Engineer-in-charge. Surface Preparation: The existing floor shall be cleaned, dried, and prepared for proper adhesion Fixing Method: The carpet shall be fixed using approved special floor adhesive Adhesive Brand: Solutia or approved equivalent All materials must be fire-retardant, durable, and compliant with acoustic performance standards Installation must ensure seamless finish and proper edge trimming Workmanship shall ensure firm adhesion without air bubbles or wrinkles.