National Security Guard-NSG has published Repair And Maintenance Of Road, Footpath And Drainage Repair And Maintenance Of Road Footpath And Drainage At 27 Scg Nsg Chennai Tn For The Year 2024 25. Submission Date for this Tender is 13-05-2024. Road Work Tenders in chennai Tamil Nadu. Bidders can get complete Tender details and download the document.
| Sl. No. | Item Description |
| 1 | EARTH WORK |
| 2 | Filling with available fly ash and earth (excluding rock) in trenches or embankmentinlayers(eachlayer shouldnot exceed 15cm),with intermediate layer of compacted earth (Soil density of 98%) after every four layers of compacted depth of fly ash, sides & top layer of filling shall be done with earth having total minimum compacted thickness 30 cm or as decided by Engineer -in-charge, including compacting each layer by rolling/ ramming and watering, all complete as per drawing and direction of Engineer -in - charge. |
| 3 | CEMENT CONCRETE (CAST IN SITU) |
| 4 | Providing and laying in position ready mixed or site batched design mix cement concrete for plain cement concrete work; using coarse aggregate and fine aggregate derived from natural sources and using recycledconcreteaggregate(RCA) as coarse aggregate andfine aggregatewithinthepermissibleutilization,PortlandPozzolana / Ordinary Portland/Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering and finishing as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the minimum specified cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. |
| 5 | All works upto plinth level |
| 6 | Concrete of M10 grade with minimum cement content of 220 kg /cum. (Note: The permissible utilization of Recycled ConcreteAggregate (RCA)ascoarse aggregate and fine aggregate is 100% each). |
| 7 | REINFORCED CEMENT CONCRETE |
| 8 | Centering and shuttering including strutting, propping etc. and removal of form for |
| 9 | Walls (anythickness)includingattachedpilasters, butteresses, plinth and string courses etc. |
| 10 | Steelreinforcement forR.C.C.workincludingstraightening,cutting, bending, placing in position and binding all complete upto plinth level. |
| 11 | Thermo-Mechanically Treatedbars of gradeFe-500D or more. |
| 12 | MASONRY WORK |
| 13 | Brick work with common burnt clay modular bricks of class designation 7.5 in foundation and plinth in: |
| 14 | Cement mortar 1:4(1 cement :4 coarse sand) |
| 15 | STONE WORK |
| 16 | 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 : |
| 17 | Cement mortar 1:6(1 cement :6 coarse sand) |
| 18 | FINISHING |
| 19 | 15 mm cement plaster on rough side of single or half brick wall of mix: |
| 20 | 1:4(1 cement: 4 coarse sand) |
| 21 | ROAD WORK |
| 22 | Preparation and consolidation of sub grade with power road roller of 8 to 12 tonne capacity after excavating earth to an average of 22.5 cm depth, dressing to camber and consolidating with road roller including making good the undulations etc. and re-rolling the sub grade and disposal of surplus earthwith lead upto 50 metres. |
| 23 | Supplying and stacking at site. |
| 24 | Red bajri |
| 25 | Moorum |
| 26 | Providing and laying design mix cement concrete of M-30 grade, in roads/ taxi tracks/ runways, using cement content as per design mix, using coarse sand and graded stone aggregate of 40 mm nominal size in appropriate proportions as per approved & specified design criteria, providing dowel bars with sleeve/ tie bars wherever required, laying at site, spreading and compacting mechanically by using needle and surface vibrators, levelling to required slope/ camber, finishing with required texture, including steel form work with sturdy M.S. channel sections, curing, making provision for contraction/ expansion, construction & longitudinal joints (10 mm wide x 50 mm deep) by groove cutting machine, providing and filling joints with approved joint filler and sealants, complete all as per direction of Engineer- in-charge (Item of joint fillers, sealants, dowel bars with sleeve/ tie bars to be paid separately).Note:- Cement content considered in M-30 is @ 340 kg/cum. Excess/ less cement used as per design mix is payable/ recoverable separately. |
| 27 | Cement concrete manufactured in automatic batching plant (RMC plant) including transportation to site in transit mixer |
| 28 | Construction of granular sub-base by providing close graded Material conforming to specifications, mixing in a mechanical mix plant at OMC, carriage of mixed material by tippers to work site, for all leads & lifts, spreading in uniform layers of specified thickness with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per specifications and directions of Engineer- in-Charge. |
| 29 | With material conforming to Grade-I (size range 75 mm to 0.075 mm) having CBR Value-30 |
| 30 | DRAINAGE |
| 31 | Providing and laying Non Pressure NP-3 class (Medium duty) R.C.C. pipes including collars/spigot jointed with stiff mixture of cement mortar in the proportion of 1:2 (1 cement : 2 fine sand) including testing of joints etc. complete |
| 32 | 450 mm dia RCC pipes. |
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