Tender For A) Rehabilitation Of The Civil Structure Of The 16-Vent Outfall Sluice Of Storm Weather Flow Channel At Ghusighata Under Calcutta Drainage Outfall Division.
Tender Value
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Estimated cost
Bid Submission
05 Nov 2026
20 days left
EMD
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Bank guarantee accepted
Document Fee
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Non-refundable
Tender Type
Online
Tender Overview
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Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
24 Paraganas North → West Bengal
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Not Available
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Project Description
Tender for A) Rehabilitation Of The Civil Structure Of The 16-Vent Outfall Sluice Of Storm Weather Flow Channel At Ghusighata Under Calcutta Drainage Outfall Division.
BOQ
| Sl. No. | Item Description |
| 1 | A. CIVIL WORK FOR GHUSIGHATA 16 VENT Tomography before and after repairing a) SRT (Seismic tomography test) with 2D images before grouting including Interpretation of ERT & SRT survey reports, evaluation of subsurface anomalies |
| 2 | b) SRT (Seismic tomography test) with 2D images after grouting including Interpretation of ERT & SRT survey reports, evaluation of subsurface anomalies |
| 3 | c) SRT (Seismic tomography test) with 3D images before grouting including Interpretation of ERT & SRT survey reports, evaluation of subsurface anomalies |
| 4 | d) SRT (Seismic tomography test) with 3D images after grouting including Interpretation of ERT & SRT survey reports, evaluation of subsurface anomalies |
| 5 | e) ERT (Electrical tomography test) with 2D images before grouting including Interpretation of ERT & SRT survey reports, evaluation of subsurface anomalies |
| 6 | f) ERT (Electrical tomography test) with 2D images after grouting including Interpretation of ERT & SRT survey reports, evaluation of subsurface anomalies |
| 7 | Above water Raking out of weared out mortar and cavities of brick work from pier and abutment of inside and outside of the barrel, primarily near the bottom portion, and/or anywhere as necessary (with rotatory mechanical device to avoid large impact and/or any other suitable machine), including cleaning and preparation of surface by jetting of air and/or water to remove all loose particles. |
| 8 | Under water Raking out of weared out mortar and cavities of brick work from pier and abutment inside barrel, primarily near the bottom portion, and/or anywhere as necessary (preferably with rotatory mechanical device to avoid large impact and/or any other suitable machine), including cleaning and preparation of surface by jetting of air and/or water to remove all loose particles. |
| 9 | Pointing joints of all required brickwork by cavitation with sulphate resistant polymer modified cement mortar with Styrene Butadiene Rubber (SBR) latex and/or Hydroxypropyle Methylcellulose and silica fume after compatibility test with the existing mortar. (Mortar consists of SRC Cement 1 part, Silica Sand 2 to 4 part, Silica Fume 5-10% of cement, SBR Latex 10 - 20% of cement, by weight and water as required, Above water pointing |
| 10 | Underwater pointing |
| 11 | Above water polyuratherin coating as protective layer (minimum thickness 2 mm) |
| 12 | Underwater coaltar epoxy coating as protective layer with application by Epoxy + Coal Tar 3 part and Hardener 1 part (in 3 layers with total minimum thickness of 400 Micron) |
| 13 | Providing and inserting packers with approved fixing compound after drilling holes of dia 15mm to 20mm for grouting as per Technical specifications including subsequent cutting/removal and sealing of the hole as necessary after completion of grouting with Cement/Epoxy. a)Above Water |
| 14 | b) Under water |
| 15 | Providing and inserting packers with approved fixing compound after drilling holes of 75mm dia. for grouting upto a depth assumed to be 2.5m (being greater than the length of one third of the length above water ie.6.78m) as per Technical specifications including subsequent cutting/removal and sealing of the hole as necessary after completion of grouting with Cement/Epoxy.In foundation |
| 16 | Providing and executing pressure grouting in brick masonry with sulphate resistant cement admixed with fly ash/GGBS and well graded fine sand and plasticizer. (Mortar prepared with SRCement : Fly Ash / GGBS : Sand = 1:1-2:4-6) Underwater Grouting |
| 17 | Above water Grouting |
| 18 | In foundation |
| 19 | Providing and applying polymer-modified sulphate resistant high strength cementitious mortar by guniting/shotcreting over prepared brick masonry surface, as approved by DRIP, CWC, and World Bank including surface preparation and incorporation of silica fumes. (IS-9012:1978) |
| 20 | Drilling percussion drilling machine of 75 mm diameter holes up to foundation level, including setting out, alignment, staging, and ensuring required line, level, and inclination as per drawings and directions of Engineer-in-Charge |
| 21 | Providing and executing grouting using a clay-based grout mix comprising bentonite/processed clay blended with pozzolanic materials such as fly ash or GGBS, with addition of cement (up to 20% by weight of dry materials) as per mix design. The rate shall include cost of all materials, labour, equipment, mixing, handling, pumping, injection, monitoring, and all incidental works complete, as per specifications and direction of the Engineer-in-Charge. |
| 22 | Providing and application of stitched, unidirectional, high strength CFRP fabric over Brick Structure (at crown portion) after surface preparation and cleaning it properly including epoxy based impregnating resin and thyrotrophic adhesive Wrapping the CFRP fabric to Brick Structure at desired orientation using tamping rollers to avoid any air voids etc. and sprinkling sand over it complete with all material, labour, equipment, tools and plants, chemicals and additives as per the direction and satisfaction of Engineer-in-charge (CFRP product used shall have minimum requirements : Tensile strength = 4000N/mm2, Tensile E-Modulus= 2.40KN/mm2, Elongation at break = 1.70%, Dry Fabric Thickness = 0.64(+/-) 0.03 mm for Arial Weight 600(+/-)3%gm/Sq-Mt)) |
| 23 | Temporary support with adjustable iron / steel props braced with pipes and clamps before taking up the renovation work complete |
| 24 | Providing and executing precision drilling and grouting stage wise in bridge masonry/concrete body from top using rotary/percussion drilling machine of 25 mm to 50mm diameter holes up to vent level top, including setting out, alignment in grid pattern and ensuring required line, level, and inclination as per drawings and directions of Engineer-in-Charge (Max height of drilling = 6.50 metre from top surface) |
| 25 | Providing and filling of foundation cavities, voids, honeycombed areas, and damaged portions in concrete/masonry structures using epoxy fillerised grout, comprising epoxy resin, hardener, and appropriate proportion of filler material , as per manufacturer’s specifications and direction of Engineer-in-Charge. (Epoxy Grout comprises of water, chemical & abrasion resistant Epoxy of high compressive and tensile strength, high bond strength with masonry surfaces, Compatible hardener, Silica sand / quartz powder or approved inert filler material in recommended proportion of the manufacturer. |
| 26 | Vertical grouting up to depth 6.5 m/3m from the top within 25-50 mm dia @ 1200mmx975mm c/c grid, Injection grouting with sulphate resistant cement admixed with fly ash/GGBS and well graded fine sand and plasticizer. (Grout mix comprising of SRC Cement = 1 part, Fly Ash conforming to IS 3812 / GGBS Conforming to IS 12089 = 20 to 40% by weight of cement, Fine sand passing through 2.36 mm sieve = 0.5 to 1 part, Water Cement ratio = 0.45 to 0.60, Plasticizer = As per Manufacturer's specification) |
| 27 | Labour for driving ISMB Joist piles by monkey in all sorts of soil including hoisting and placing piles in position, driving by pile engine set (with heavy staging or from specially made pontoon) under specific instruction of Engineer-in-charge, protecting the pile head with wooden or any suitable type cushioning and including hire and labour for necessary driving appliances and all tackles. a. ISMB 200 |
| 28 | b. ISMB 100 Note: 1) Payment to be made on the length driven into the ground. |
| 29 | Taking out ISMB Joist piles from river bed or from elsewhere including carrying, stacking materials in the nearest stack yard. a. ISMB 200 |
| 30 | b. ISMB 100 Note: 1) Payment to be made on the length driven into the ground. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Oct 14, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedNov 05, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 20 daysNov 05, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 20 daysTender Documents
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