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| 1 | Fabrication of Pipe lines |
| 2 | Site fabrication of MS pipes including edge preparation, fit up, welding (root pass-TIG & final pass-arc) and testing. The testing includes 100% DPT on both root & final weld and Hydro test at every 100 m length at 10 kg/cm2 after final completion. |
| 3 | Erection of Pipe lines |
| 4 | Safe handling of preinsulated fabricated pipes and erection of pipes at site on the RCC pedestals using Mobile crane including transportation of pipes from CWCP to site. |
| 5 | Supply, Fabrication and erection of MS structure |
| 6 | Supply of MS structural items like plates, anles, channels etc as per IS 2062, Fe 250 grade, fabrication and erection of MS structure to suit conditions by ARC welding process which include edge preparation, fit up, root and final die penetration test (100%) and grinding if any to complete as specified and as required. Arc welding to be carried out using E6013 electrode only. |
| 7 | Dismantling of pipes, MS structure etc. |
| 8 | Dismantling of MS/GIstructures, chilled/condenser water MS pipe, AC ducts, etc and safe handover to CWCP/Department stores. It includes cutting & loading, shifting of removal materials by means of mobile crane, if any, as per the standard practice and as specified within the lead distance of 2 km. |
| 9 | Painting of structure / Equipments |
| 10 | Supply and application of two coats of enamel paints over one coat of red oxide/zinc primer on MS structure, sheet metals, pipe lines, etc. This includes thorough cleaning of members using steel wire brush or buffing wheel emery sheets and inclusive of all consumables, to complete as per specifications. |
| 11 | Thermal Insulation |
| 12 | Supply and fixing of 9 mm closed cell Nitryle foam rubber / cross linked polyethylene (Class \"O\") Thermal insulation on ducts after applying suitable adhesive or shall have self adhesive on one side and aluminium foil of 40G thickness on outer side as per the specifications and complete as required. All the joints shall be properly sealed with 150mm wide nitrile rubber insulation and complete with self adhesive aluminium sealing tape. |
| 13 | GI Ducting |
| 14 | Supply, installation, balancing and commissioning of site/factory fabricated GSS sheet metal rectangular/ round ducting complete with neoprene rebber gaskets, elbows, splitter dampers, vanes, hangers, supports etc. as per approved drawings and specifications of 22G sheet thickness complete as required. |
| 15 | Supply Air Grills with Aluminium VCD |
| 16 | Supply & fixing of powder coated extruded aluminium Supply Air Grills with double difflection louvers & aluminium Volume Control Dampers as per specifications. |
| 17 | Return Air Grills/ continuous air grilles without Alumninum VCD |
| 18 | Supply & fixing of powder coated extruded aluminium Return air grills with double difflection louvers & bird screen but without Volume Control Dampers complete as required. |
| 19 | Brass ball valve: Supply and installation of forged brass ball valve. The stem, body, ball and gland nut shall be forged brass as per IS 6912 Gr. FLB, nut & washer of carbon steel as per IS 1367, gland packing and body seat ring shall be PTFE as per BS EN 12086-1, operting lever shall be CS as per IS 2062, test pressure body 25kg/sqcm and seat- 16kg/sqcm. |
| 20 | 25 mm |
| 21 | Earth excavation and refilling: Manual earth excavation in all kind of soil, refilling after work completion. This includes removal of shrubs, vegetation, roots and rocks along the trench and disposal to identified locations and de-watering the trench wherever necessary. Route marker shall be provided for every 50 m length. Refilling earth after completion of piping works. |
| 22 | Hire charges for mobile cranes/ earth excavators used for shifting/movement of materials, removing vegetation and scrap disposal. |
| 23 | Supply and installation of GI fasteners |
| 24 | M 10 x 125 mm long GI hexagonal head fasteners with 2 nos of 3 mm thick GI plain washers. |
| 25 | M 12 x 125 mm long GI hexagonal head fasteners with 2 nos of 3 mm thick GI plain washers. |
| 26 | M 14 x 125 mm long GI hexagonal head fasteners with 2 nos of 3 mm thick GI plain washers. |
| 27 | M 16 x 180 mm long GI hexagonal head fasteners with 2 nos of 3 mm thick GI plain washers. |
| 28 | M 18 x 180 mm long GI hexagonal head fasteners with 2 nos of 3 mm thick GI plain washers. |
| 29 | M 20 x 180 mm long GI hexagonal head fasteners with 2 nos of 3 mm thick GI plain washers. |
| 30 | Maintenance of valve chambers |
| 31 | Maintenance of valve chambers connected with CWCP pipelines.The work involves cleaning, dewatering, gland packing of valves, repair of insulation, wall painting etc. |
| 32 | Repair of valve chamber: providing repair/construction of valve chamber withbrick masonry work, cement plastering in 1: 5 proportions and 20 mm thick. Construction of valve chamber shall be as per the drawing. |
| 33 | 230 mm brick masonry wall |
| 34 | 20 mm thick plastering to the external surfaces of wall |
| 35 | Casting of RCC pedestal and preparation of supporting bed: Casting, supply and erection of RCC pedestal as per drawing using 12 mm dia torr steel, bending, placing in position, tying of steel, RCC works in 1:2:4 ratio. Preparation of supporting bed by leveling, ramming the bottom of excavation, laying of 50 mm thick Mud mat with river sand / M sand and 75 mm thick PCC works in 1: 2: 4 ratio with 20 mm blue metal. The rate shall include shuttering charges, mudmat, PCC, torr steel,tying, all labour and RCC. |
| 36 | Supply, bending, cutting , binding, fixing in position of 12 mm dia steel reinforcement TMT bar for RCC pedestal |
| 37 | Fabricating, erecting and fixing in position at all levels, centering and shuttering to correct line and levels including strutting, propping, etc |
| 38 | CAST IN SITUProviding and laying in position specified grade of reinforced cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), excluding the cost of centering, shuttering, finishing and reinforcement. |
