Providing and Fabricating Acoustic Wall Partition for Classroom B505 at Academic Block in NUALS Campus

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. Electric resistance or induction butt welded tubes. Preferred Brand : TATA/ Jindal/ Appollo

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete. Preferred Brand : TATA/ Jindal/ Appollo /Equivalent brands (Brand approval has to be taken)

Providing and fixing expansion hold fasteners on C.C./R.C.C./Brick masonry surface backing including drilling necessary holes and the cost of bolt etc complete. Wedge expansion typeFastener with threaded dia 10 mm

Supply and installation of magnesia drywall partition system (having high water & fire resistance) which includes one layers of Magnesia board Square edge of size1200x2400x12mm having density1000kgs/m3, weight 12kg/m2 fixed on the either side of framework. Frame cavity insulation :Synth polyfibre having thickness 50/25mm, width 600mm, density 1000gsm filled between the Studs and held in position by using chicken wire mesh/cross bracings/pasting on one side of the board. The Magnesia board 12mm thick should be fixed on one side of the framework in a staggered (ashlar or brick) pattern by using suitable metal fasteners at 300mm center. Same procedure to be followed on other side of the framework to give one layers Tufbloc on either side of framework. 4mm gap should be maintained between boards on all sides of Tufbloc 4mm gap to be filled by using seam kit as per recommendations. Including the cost of all materials, labour, accessories, transportation, screws, fasteners, and all incidental charges etc complete as per the direction of Engineer-in-Charge. Technical Parameters: Fire (Class): 1 & P, Acoustics - STC 55, Thermal conductivity (W/mk): 0.118, Climate (°C, RH): 50, 95, Light reflectance (%): Paint dependent, Green (VoC, RC %): Low, 30. Preferred Brands: Anutone /Armstrong /Saint Gobain

Supply and installation of Synth Slim, polyfibre panels, core-pigmented, high-density, Synth polyfibre rigid panels of size 1200x2400x9mm thick, volume density 210 - 230kg/m3, weight 1.9 - 2.1kg/m2 installed by using Strut framework system. The Strut framework systems includes Strut CC25 Cross Channel having thickness 0.55mm, length 3600mm, knurled web 50, depth 25mm and equal flanges 15mm is fastened to wall positioned horizontally in a regular manner at 600mm c/c. Strand, Square edge, Magnesite bonded pinewood fibre core tiles of size 600x2400x20mm, density 400 kgs/m3, weight 8kg/m2 are fastened to Strut CC25 Cross channel with suitable fasteners. Longer edges of the panel should be perpendicular to Strut CC25 Cross Channel. Synth Slim Panels are then adhered to strand behind with stick adhesive. Including the cost of all materials, labour, accessories, transportation, screws, fasteners, and all incidental charges etc complete, as per the direction of Engineer-in-Charge. Technical Parameters of Synth Slim: Fire (Class): B, Acoustics: NRC 0.4 (For A mounting), Thermal conductivity (W/mk): NA, Climate (° C, RH): 50, 99, Light reflectance (%): Colour Dependent, Green (VoC, RC %): Nil, 30. Technical Parameters of Strand: Fire (Class): 1 & P, Acoustics: NRC 0.73 (For 25mm C50 Mounting), Thermal conductivity (W/mk): 0.1, Climate (°C, RH): 50, 95, Light reflectance (%): 80, Green (VOC, RC %): Low, 35. Preferred Brands: Anutone /Armstrong /Saint Gobain

Supply and installation of Acoustic Door system comprising double leaf shutter suitable for a clear wall opening of 1200 mm (W) × 2370 mm (H), designed to achieve minimum 35 dB sound insulation, including providing and fixing first class hardwood door frame of section 120 mm × 60 mm having minimum density of 650 kg/m³, properly seasoned and treated, complete with necessary fixtures; door shutter of size 1000 mm × 2300 mm × 68 mm overall thickness, constructed with 50 mm thick core comprising 10 mm thick Tufbloc boards on either side with treated hardwood internal framework of size 100 mm × 30 mm, infilled with minimum 50mm thick Synth PF insulation of 1000 GSM density, finished with reinforced FR silicate coating on both faces and externally cladded with 12 mm thick plywood, edges extremely lipped with hardwood beading, with all joints sealed using approved sealant between Tufbloc board and shutter beading to ensure acoustic performance; including supply and fixing of all necessary hardware such as stainless steel ball bearing hinges, stainless steel back-to-back handles, stainless steel door lock, door closer, panic exit device (where required), stainless steel tower bolts, drop-down acoustic seal, and all accessories, complete in all respects including cost of materials, labour, transportation, tools, and installation as per drawings and direction of Engineer-in-Charge. Preferred Brands: Anutone /Armstrong /Saint Gobain

Dismantling of existing glassfibre core fully encapsulated ceiling tiles of size 595×595×15 mm, white colour, including the complete removal of T-24 grid system of 600×600 mm module comprising wall angle with unequal flanges of 14 mm and 20 mm width, 3000 mm length and 0.43 mm thickness fixed along the perimeter using nylon sleeves and suitable fasteners at 300 mm centres, and main T-24 sections having flange width 15 mm, height 32 mm and length 3600 mm suspended from soffit using soffit cleats, wire rods and leveling spring clips at 1200 mm c/c; the work shall be executed carefully to ensure removal of ceiling tiles without any damage, including dismantling of the entire grid framework, stacking of serviceable materials as directed, and disposal of unserviceable materials within the campus with all leads and lifts, and including cost of all labour, tools and plants, scaffolding, and incidental charges, complete as per the directions of the Engineer-in-Charge.

Installation of Subtex nubby ceiling tile of size 595x595x15mm (using Subtex nubby ceiling tile supplied by the department at free of cost) ,which is suspended by using 0.3mm thick and 24mm wide pre coated metal T24 grid system. The T 24 Grid system of 600x600mm module shall include wall angle with unequal flanges of size 14&20mm wide, length 3000mm, 0.43mm thick fixed along the perimeter of walls with the help of nylon sleeves and suitable fasteners at 300mm centers. Then suspend the Main T24 having flange width 24mm, height 32mm and length 3600mm. Main "T" runners to be suspended from ceiling using GI slotted cleats of size 27 x 37 x 25 x 1.6 mm fixed to ceiling with 12.5mm dia and 50 mm long dash fasteners, 4 mm GI adjustable rods with galvanised butterfly level clips of size 85x 30x 0.8 mm spaced at 1200 mm center to center along main T. Cross T24 having flange width 24mm, height 32mm and length 1200mm is then interlocked into the pre-cut slots in the Main T24 at 600mm centers in the direction perpendicular to the Main T 24. Finally Cross T24 having flange width 15mm, height 32mm and length 600mm are then interlocked into the pre cut slots in the 1200mm Cross T24 at 1200mm centers and in direction parallel to the Main T24. ceiling tile of size 595x595x15mm thick shall be placed into the grid size of 600x600mm. Ensure arrow marks behind the tiles panels are orianted in one direction to achieve uniform shade. Including the cost of all materials, labour, accessories, transportation, screws, fasteners, and all incidental charges etc complete, as per the direction of Engineer-in-Charge. Technical Parameters:• Core - Glass fibre,• Fire – Class 1 & P, • Acoustics – NRC 0.9,• Climate (OC RH) – 40, 95, • Termite resistance – Yes, •Green (RC %) – 35,• Hygiene (VoC, Clean room) – Low, Class 3,• Strength, Load capacity (Kg) -Antisag , Preferred Brand : Anutone /Armstrong/Saint-Gobain

Providing and fixing 16 mm thick Marine plywood conforming to IS 303, BWP grade, with a minimum 7 years manufacturer warranty, for paneling, doors, windows, and clerestory windows, including cutting to size, edge finishing, drilling, and fixing with suitable screws, nails, and approved fasteners on existing or new framework as required, ensuring proper alignment and finishing, complete in all respects including cost of all materials, labour, tools, transport, loading/unloading, and conveyance, as per drawings and specifications and as directed by the Engineer-in-Charge. Preferred Brands: Century Ply/ Kitply/ Greenply

Dismantling doors, windows and clerestory windows (steel or wood ) shutter including chowkhats, architrave, holdfasts etc. complete and stacking within 50 metres lead:Of area 3 sq. metres and below