Delhi Development Authority-DDA has published Tender For Maintenance Of Work Pertaining To Completed/Closed Scheme (Mig/Lig/Janta/Ews/Sfs).Sub Head: Cleaning & Desilting Of Rainwater Harvesting And Drain Under The Jurisdiction Of Spd-1/Sz In Kaveri (805 DuS) & B-2, Vasant Kunj (Specialized Work).. Submission Date for this Tender is 14-05-2024. Drainage Tenders in New Delhi Delhi. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 09-May-2024 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 14-05-2024 |
| Sl. No. | Item Description |
| 1 | Removal of existing SFRC cover from the drain & RWH and refixing in position after cleaning the drain as per the direction of Engineer-in-charge( Payment of cleaning of drain to be made separately). |
| 2 | Desilting of drain of variouscross section/ sizes i/cremoval of silt,malba,buildingrubbish etc and disposal of the same to the dumping ground (Payment for disposal will be paid separately.). |
| 3 | Removal of RCC beams/slabs of different sizes from top of rain water harvesting chambers by mechanical/manual means and shifting within the work area and placing the same in position after cleaning & opeation of rain water harvesting chambers complete as per direction of Engineer-in-charge. |
| 4 | Earth work in excavation by mechanical means (Hydraulic excavator)/manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and for all lift, as directed by Engineer-incharge. a) All kinds of soil |
| 5 | Supplying, filling, spreading & leveling stone boulders of size range 5 cm to 20 cm, in recharge pit, in the required thickness, for all leads & lifts, all complete as per direction of Engineer-incharge. |
| 6 | Supplying, filling, spreading & leveling gravels of size range 5 mm to 10 mm, in the recharge pit, over the existing layer of boulders, in required thickness, for all leads & lifts, all complete as per direction of Engineer-in-charge. |
| 7 | Supplying, filling, spreading & leveling coarse sand of size range 1.5 mm to 2 mm in recharge pit, in required thickness over gravel layer, for all leads & lifts, all complete as per direction of Engineer -in-charge. |
| 8 | Development of tube well in accordance with IS : 2800 (part I) and IS: 11189, to establish maximum rate of useable water yield without sand content (beyond permissible limit), with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by “V” notch method or any other approved method, measuring static level & draw down etc. by step draw down method, collecting water samples & getting tested in approved laboratory, including disinfection of tubewell, all complete, including hire & labour charges of air compressor, tools & accessories etc., all as per requirement and direction of Engineer-in-charge. |
| 9 | Providing and fixing suitable size threaded mild steel cap or spot welded plate to the top of bore well housing/ casing pipe, removable as per requirement, all complete for borewell of: a) 100 mm dia |
| 10 | Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in: a) Cement mortar 1:4 (1 cement : 4 coarse sand) |
| 11 | Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level: a)1:2:4 (1 cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources) |
| 12 | 12 mm cement plaster finished with a floating coat of neat cement of mix : a) 1:4 (1 cement: 4 fine sand) |
| 13 | Providing and placing in position 100 mm thick factory made machine batched & machine mixed Precast RCC Rectangular Covers on drains of footpath of various sizes, of M-25 grade cement concrete for RCC work, including cost of centering, shuttering, reinforcement of 8 mm dia TMT bars of Fe 500 grade @ maximum 100mm c/c on both ways, neat cement punning on finished surface, properly encased on all edges with 1.6 mm thick, 100 mm wide MS sheet duly painted over priming coat, reinforcement to be welded at edges with MS sheet and providing 2 Nos. 12 mm dia bar for hooks etc including cost of cartage, all leads & lift, handling at site etc. all complete as per direction of Engineer-in-Charge. |
| 14 | Cleaning and desilting of gully trap chamber, including removal of rubbish mixed with earth etc. and disposal of same, all as per the direction of Engineer-in-charge. |
| 15 | Cleaning of chocked sewer line by diesel running vehicle mounting hydraulic operated high pressure suction cum jetting sewer cleaning machine fitted with pump having 4000 litres suction capacity and 6000 litres water jetting tank capacity including skilled operator, supervising engineer etc. for cleaning and partial desilting of manholes and dechocking of sewer lines. Dechocking and flushing of sewer line from one manhole to another by high pressure jetting system of 2200 PSI for sewer line from 150mm dia upto 300mm. |
| 16 | Cleaning of house manhole (Rectangular) i/c pumping out waste water and desilting of sludge with bucket taking all safety precautions against poisnous gases etc., i/c necessary euipment and T&P etc., taking out silt in foul condition for all lead and lift as per direction of Enginner-In-Charge. |
| 17 | Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved. |
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