Delhi Development Authority-DDA has published Tender For M/O Completed Scheme Under Narela Zone Sub Head - Redevelopment Of Boring/Tubewell And P/L Pp-R Pipe From Tubewell To Ugr In Housing Pockets 3,4,And 5 Sector G7/G8 Narela.. Submission Date for this Tender is 22-02-2024. Tube Well Tenders in narela Delhi. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Re-Development of tube well in accordance with IS : 2800 (part I) and IS:11189, to establish maximum rate of usable 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, i/c 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. |
| 2 | Gravel packing in tubewell construction in accordance with IS: 4097, including providing gravel fine/ medium/ coarse, in required grading & sizes as per actual requirement, all complete as per direction of Engineer-in-charge |
| 3 | 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) 150 mm dia |
| 4 | Providing and fixing M.S. clamp of required dia to the top of casing/ housing pipe of tubewell as per IS: 2800 (part I), including necessary bolts & nuts of required size complete.(a) 150 mm clamp |
| 5 | Providing and fixing 3 layer PP-R (Poly propylene Random copolymer) pipes confirming to IS:15801 UV stabilized & anti - microbial fusion welded, having thermal stability for hot & cold water supply, including all PP - R plain & brass threaded polypropylene random fittings, including trenching, refilling & testing of joints complete as per direction of Engineer-in-Charge. External work (a) PN - 10 Pipe, 75 mm OD (SDR-11) |
| 6 | Providing and fixing of PP-R ball valve of 75mm dia of approved quality as per direction of Engg-In-charge |
| 7 | Constructing masonry Chamber 30x30x50 cm inside, in brick work in cement mortar 1:4 (1 cement :4 coarse sand) for stop cock, with C. I. surface box 100x100 x75 mm (inside) with hinged cover fixed in cement concrete slab 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size), i/c necessary excavation, foundation concrete 1:5:10 ( 1 cement : 5 fine sand : 10 graded stone aggregate 40mm nominal size ) and inside plastering with cement mortar 1:3 (1 cement : 3 coarse sand) 12mm thick, finished with a floating coat of neat cement complete as per standard design :(a) With common burnt clay F.P.S.(non modular) bricks of class designation 7.5 |
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