National Security Guard-NSG has published Tender For Arm And Up Gradation Of Rainwater Harvesting Recharge Pits Etc At 27 Scg Nsg Chennai. Submission Date for this Tender is 15-05-2024. Water Harvesting Tenders in chennai Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | Carriage of Materials |
| 2 | By Mechanical Transport including loading,unloading and stacking |
| 3 | Lime, moorum, building rubbish Lead - 5 |
| 4 | Excavation of earth and mud channel and forming bund on either side anddepositing the earth on banks including jungle clearance etc complete lead up to 50mtr |
| 5 | Supplying, filling, spreading & levelling stone aggragate 20mm nominal size, in recharge pit, in the required thickness, for all leads & lifts, all complete as per direction of Engineer-in-charge. |
| 6 | EARTH WORK |
| 7 | 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-in-charge. |
| 8 | All kinds of soil |
| 9 | 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 lift upto 1.5 m, as directed by Engineer-in-charge. |
| 10 | Hard rock (blasting prohibited) |
| 11 | Excavating trenches by mechinical / manual means of required width for pipes, cables, etc including excavation for sockets, and dressing of sides, ramming of bottoms, for all depth, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc. and disposing of surplus excavated soil as directed, within a lead of 50 m: |
| 12 | All kinds of soil |
| 13 | Pipes, cables etc. exceeding 80 mm dia. but not exceeding 300 mm dia |
| 14 | Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 and for all lif. |
| 15 | Supplying and filling in plinth with sand under floors, including watering, ramming, consolidating and dressing complete. |
| 16 | CEMENT CONCRETE (CAST IN SITU) |
| 17 | Providing and laying in position excluding cement concrete of level: specified grade the cost of centering and shuttering - All work up to plinth |
| 18 | 1:2:4 (1cement : 2 coarse sand (zone-Ill) derived from natural sources : 4 graded stone aggregate 20 mm nominal size derived from natural sources) |
| 19 | 1:4:8 (1Cement : 4 coarse sand (zone-Ill) derived from natural sources: 8 graded stone aggregate 40 mm nominal size derived from natural sources) |
| 20 | MASONRY WORK |
| 21 | Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in: |
| 22 | Cement mortar 1:4(1 cement :4 coarse sand) |
| 23 | STONE WORK |
| 24 | Random rubble masonry with hard stone in foundation and plinth including levelling up with cement concrete 1:6:12 (1 cement : 6 coarse sand : 12 graded stone aggregate 20 mm nominal size) upto plinth level with : |
| 25 | Cement mortar 1:6(1 cement :6 coarse sand) |
| 26 | FINISHING |
| 27 | 12 mm cement plaster of mix: |
| 28 | 1:4(1 cement: 4 coarse sand) |
| 29 | DISMANTLING AND DEMOLISHING |
| 30 | Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. |
| 31 | Nominal concrete 1:3:6 or richer mix (including equivalent design mix) |
| 32 | ROAD WORK |
| 33 | 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 100 mm 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. |
| 34 | DRAINAGE |
| 35 | Providing orange colour safety foot rest of minimum 6 mm thick plastic encapsulated as per IS : 10910, on 12 mm dia steel bar conforming to IS: 1786, having minimum cross section as 23 mmx25 mm and over all minimum length 263 mm and width as 165 mm with minimum 112 mm space between protruded legs having 2 mm tread on top surface by ribbing or chequering besides necessary and adequate anchoring projections on tail length on 138 mm as per standard drawing and suitable to with stand the bend test and chemical resistance test as per specifications and having manufacture’s permanent identification mark to be visible even after fixing, including fixing in manholes with 30x20x15 cm cement concrete block 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size) complete as per design. |
| 36 | Providing and fixing in position pre-cast R.C.C. manhole cover and frame of required shape and approved quality |
| 37 | L D- 2.5 |
| 38 | Rectangularshape 600x450mminternal dimensions |
| 39 | Constructing brick masonry road gully chamber 50x45x60 cm with bricks in cement mortar 1:4 (1 cement : 4 coarse sand) including 500x450 mm pre-cast R.C.C. horizontal grating with frame complete as per standard design : |
| 40 | With common burnt clay F.P.S. (non modular) bricks of class designation 7.5 |
| 41 | RAIN WATER HARVESTING & TUBEWELLS |
| 42 | Boring/drilling bore well of required dia for casing/ strainer pipe, by suitable method prescribed in IS: 2800 (part I), including collecting samples from different strata, preparing and submitting strata chart/ bore log, including hire & running charges of all equipments, tools, plants & machineries required for the job, all complete as per direction of Engineer-in-charge, upto 90 metre depth below ground level. |
| 43 | All types of soil |
| 44 | 300 mm dia |
| 45 | Rocky strata including Boulders |
| 46 | 300 mm dia |
| 47 | Supplying, assembling, lowering and fixing in vertical position in bore well unplasticized PVC medium well screen (RMS) pipes with ribs, conforming to IS: 12818, including hire & labour charges, fittings & accessories etc. all complete, for all depths, as per direction of Engineer-in-charge. |
| 48 | 150 mm nominal size dia |
| 49 | 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-in-charge. |
| 50 | 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. |
| 51 | 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: |
| 52 | 150 mm dia |
| 53 | Providing and fixing Bail plug/ Bottom plug of required dia to the bottom of pipe assembly of tubewell as per IS:2800 (part I). |
| 54 | 150 mm dia |
| 55 | Non Schedule Item |
| 56 | Providing and fixing of non woven Geotextile having thickness of 400 GSM, Having minimum tear Strength of 250 ASTM D4533,width wise atleast215 ASTM D4533 having puncture strength of 1550 plus as per ASTM D6241 Having elongation at Brack % of 57 plus as per ASTM D 4595 in Two layers, made out of long fibers to hold the modules and protect liner including cutting ,sizing ,head welding, and needle punched for high porosity and proper percolation. Complete as per entire satisfaction of engineer-in-charge |
| 57 | Providing and fixing of CGWB/GRIHA approved Pure Rain Filter 700mm dia with 300mm dia inlet and outlet to accumulate storm water having desilting suspended solid catcher made out of FRP with strainers steel 304 grade strainers, having steel bucket of 600micron capable of eliminating finer particulate matter upto160mmicron filtration made of SS net with long fiber foam of 25mm thickness, Blue color, filtration capacity 40-80 kiloliters complete in accordance to the design, drawing and specification complete as per entire satisfaction of Engineer-in-Charge. Total depth of filter shall be 2000mm including two filter extension. |
| 58 | Providing & Fixing of Co-polymer based rainwater harvesting structure including supply of cross wave of size 494 mm x 494 mm x220mm with minimum void ratio of 94.7% having a weight of 1.8 and spacers having size of 988 mm x 240 mm x 25 mm having a weight of 0.8 kg of approved make and arranging the same in as directed by the engineer -in-charge and in complete accordance to the design, drawings. The rates are inclusive of all necessary transportation, loading, unloading excise, vat control etc.as per entire satisfaction of Engineer -in-charge. |
| 59 | Providing and fixing polyethylene pipe of working pressure 6kg per square cm confirming to IS:4985 including jointing with sealing ring confirming IS:5382 leaving 10mm gap for thermal expansion 300mm dia PVC pipe |
| 60 | Constructing brick masonry manhole (silt chamber type) inside size 1.20mX0.90m x1.20m deep with FPS brick class designation 75 in cement mortar 1:4 (1 Cement: 4 coarse sand ) 15mm thick RCC top slab with 500mm dia opening in cement concrete 1:2:4 (1 cement: 2 C/sand: 4 graded stone agg, n/size reinforced with 18.92 kg cold twisted sreel bars 20cm foundation concrete 1:4:8 (1 cement: 4 C/sand: 8 graded stone agg 40mm size) inside plastering 12 mm thick with cement mortar 1:3 (1 cement: 3 C/sand) finished with a foating coat of neat cement and providing 75 mm thick bed concrete in 1:2:4 mix (1 cement: 2 C/sand: 4 graded stoneagg . 20mm n/size) including neat cement punning inside the manhole complete as per standard design/depth shall be measured from invert level of manhole excluding cost of manhole cover and frame which shall be paid for separately etc. All complete as per direction of engineer-in-charge. |
| 61 | Providing and fixing polyethylene pipe of working pressure 6kg per square cm confirming to IS:4985 including jointing with sealing ring confirming IS:5382 leaving 10mm gap for thermal expansion 150 mm diameter |
| 62 | Extra for add or deduct for providing & fixing FRP (FIBER REINFORCED POLYMER) based mirofilter drum/ extension of 700 mm dia CGWB/GRIHA approved pure rain filtersdia Accordance to the design , drawing and specification complete as per entire satisfaction of Engineer-in-Charge |
| 63 | Supply and installation of FRP based access Chambers, each having of size 500 mm x 500mm x 500 mm to have access in the tank complete in accordance to the design, drawings and specifications. |
| 64 | Providing & fixing of HDPE high EVA liner having a thickness of 1.2 mm for the collection of water heat welding onsite and off site as per the requirement. |
| 65 | Providing & Installation of Crompton Mini Pacific-I 1 HP Single Phase Domestic Monoblock Pump Single Phase, Max Flow Rate 72-12 LPM,, Discharge Range (LPH) 4280-700 Lph, Head (m) 6 - 55 Mtrs, Impeller Material- Brass, Suc x Del (mm) 25x25 mm |
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