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| 1 | Hiring of Security Services from DGR sponsored agency at NERLDC, Guwahati |
| 2 | Providing and laying in position cement concrete of specified gradeexcluding the cost of centering and shuttering: 1:5:10 (1 cement : 5 coarse sand (zone-III): 10 graded stone aggregate 40 mm nominal size) |
| 3 | Providing and laying in position machine batched and machine mixed design mix M-25 grade cement concrete for reinforced cement concrete work, using cement content as per approved design mix, including pumping of concrete to site of laying but excluding the cost of centering, shuttering, finishing and reinforcement, including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and durability as per direction of Engineer-in-charge.(Note :- Cement content considered in this item is @ 330 kg/cum. Excess/ less cement used as per design mix is payable/recoverable separately).5.33.1 All works upto plinth level |
| 4 | Centering and shuttering including strutting, propping etc. and removal of form for :Foundations, footings, bases of columns, etc. for mass concrete |
| 5 | Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. Thermo-Mechanically Treated bars of grade Fe-500D or more |
| 6 | Earthing with copper earth plate 600 mm X 600 mm X 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe |
| 7 | Extension of D.G. Exhaust pipe line by using 6-inch dia. MS Pipe and heavy class long radius bends of matching diameter along with necessary nut, bolt, washers and U-clamps etc thereon as required, welding to be done as per best engineering practice by following high standard welding procedure, complete in all respect finished with one primary followed by two secondary coats of heat resistant heatex paint. The upper most end to be bend and chamfered at 45 degree and to be closed by welding a wire mesh of mi. 10 gauge MS wire having 1-inch x 1-inch openings to stop entry of any bird into the pipeline. |
| 8 | Providing and fixing MS supporting structure at the horizontal position of the chimney, duly joined to each other to form a ladder type structure. Entire structure to be provided two coats of zinc chromate metal primer followed by two coats of weatherproof epoxy paint of appropriate shade in such manner that successive coat shall be applied only after fully drying of previous coat. (As per drawing) |
| 9 | Providing and fixing Thermal insulation of exhaust pipeline by LRB (light resin bonded) / mineral wool/ rockwool mattressesof thickness 50 mm x densityof minimum120 kg/m3 |
| 10 | Support for LRB/ mineral wool/ rockwool withembedded chicken wire mesh, cladding by aluminium sheets, Including the bends/ flanges therein, by fixing appropriate size steel screws and washers; cladding to be done in such a manner and workmanship that it shall protect direct entry of rain water into the insulation done; workmanship of work should be good to ensure proper finishing having regular diameter of 10 inch all over (Providing of sectionalization point as per drawing) |
| 11 | Supply and installation of SS Flexible Bellows, suitable for 6\" dia. pipe, complete with counter flanges, heat resitant gaskets, nuts-boltswashers etc., complete as required |
| 12 | Wall (U shape) clamp with necessary nut, bolts and washer etc. (wherever required) for total aluminium pipe structure including wall drilling |
