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| 1 | Supply, assembly and erection in replacement GI sheet 24 gauge with C & SS rectangular/ square duct made out of \"L\" shaped hollow profile, duly factory boxed, including all accessories such as Corner, Cleat, Carriage bolt, Gasket and appropriate sealant on longitudinal joints etc complete including necessary MS Channels, gurder supports as approved by Engr-in-Charge including making of hole in any type of wall (masonary/ concrete) and making good with existing work, masonry work and necessary MS channel supports complete all as specified and directed |
| 2 | Description all as item No. 01 above but using GI sheet 22 gauge complete all as specified. |
| 3 | Supply & erection in replacement 19 mm thick nitrile duct thermal insulation with Aluminium foil, non-fibrous, fire retardant, closed cell, tri-dimensional, chemically cross linked polyethylene foam, conform to class \"O\" for fire propagation and class 1 for surface spread of flame & factory laminated aluminium foil complete all as specified and as directed. |
| 4 | S&F in replacement acoustic lining of supply air ducting complete with GI frame, tissue paper, 26 Gauge perforated Aluminium Sheet,25mm thick, of density 32 Kg/cum fiber glass insulation complete all as specified and as directed. |
| 5 | M & L in replacement under deck insulation for metal roof with bonded fibre glass wool of density 24 Kg/Cum, 50 mm thick, suitably factory laminated with aluminium foil backed up by scrim and Kraft paper (FSK), facing with 50 mm projection for overlap and buttingin following operations complete all as directed and specified:-(a) S&F in replacement 6 mm dia M S rods between purlins suitably for supporting the required thickness of insulation material beneath the metal roof.(b) S&F in replacement 22 SWG GI/ Aluminium wires supports for insulation.(c) S&F in replacement chicken wiremesh 12.5 mm x 22 SWG of hexagonal construction below the insulation for supporting the same.(d) S&F in replacement under deck insulation with bonded fibre glass wool of density 24 Kg/Cum, 50 mm thick, suitably factory laminated with aluminium foil backed up by scrim and Kraft paper (FSK), facing with 50 mm projection for overlap and butting.Note:- Insulating material shall be conforming to BS - 476, Part 4, 5, 6 & 7. |
| 6 | S&F in replacement Acoustic treatment/ lining of area of AHUroom with 22 Gauge, GI channels of 50x50 mm size fitted at 600x600mm girds, fitted with 50mm thick, 32 Kg/cum fibber glass insulation, covered with fibber glass tissue and 24 Gauge Aluminium perforated sheet as required, The joint shall be with minimum overlapping of 75mm with 30mmx 3mmaluminium strip covering, All corners shall be provided with 20x20x2mm aluminium angle with stainless steel counter sunk screws complete all as specified and as directed. |
| 7 | Supply, installation, testing and balancing in repair square shape supply air diffusers with removable core and antismudge ring and volume control dampers, powder coated, extruded aluminium construction complete all as specified and as directed. |
| 8 | Supply, installation, testing and balancing in repair square shape return air diffusers with removable core and antismudge ring and without control dampers, with powder coated, extruded aluminium construction complete all as specified and as directed. |
| 9 | Supply and apply tack coat of STARBOND 30-36 of following items for out door ducting. (a) After eraction nitrile duct thermal insulation apply tack coat of STARBOND 30-36 and embed the selective lagging fabric (glass fiber cloth/canvas cloth) immediately.(b) Apply first coat STARBOND 30-36by brush or roller when tack coat is cured that is 2-3 hours. (c) Apply final coat STARBOND 30-36 by brush or roller after first coat is fully cured. |
| 10 | Supply and fixing in replacement air volume control damper with connected accessories, made out of 22 Gauge GI sheet with flap and operatig handle complete all as specified and as directed. |
| 11 | Supply and fixing fire proof double layered canvas cloth connection for AHU outlet including inspection opening complete with flanges made out of 22 SWG Sheet on both side for connection to AHE and duct completewith nuts , bolts complete all as specified and directed. |
| 12 | Supply, installation, testing and balancing of Return air grill without dumper powder coated extruded aluminum construction complete . |
| 13 | Supply, installation, testing and balancing of Supply air grill with aluminum dumper powder coated extruded aluminum construction |
| 14 | Supply, installation, testing and commission of Factory fitted UL-555 motorized fire dampers of required size complete with smoke detector/ thermister linkage etc in AHU Room Supply Air Ducts as required for operation complete all as specified and directed. |
| 15 | Supply, installation, testing and commission of Fire damper Actuator with control panel in AHU Room Supply Air Ducts as required for operation complete all as specified and directed. |
| 16 | M&L for air duct cleanning filter vacuum unit of high pressure as required with robotic video camera, used for inspection cleaning of duct while using robotic camera and the video filmcopied on CD in duplicate before and after cleaning, one copy of CD will be kept on record and provided to Engineer-in-Charge & other complete all as specifed and directed. |
| 17 | Supply and fixing GI Pipe 80mm dia heavy class fixing on wall for ducting supports including making of hole in any type of wall and making good with plastering work, masonry work complete all as specified and directed. |
