Tender For Demolition And Reconstruction Of Oht At Installation Mandovi
Tender Value
1.40 Crore
Estimated cost
Bid Submission
24 Sep 2026
25 days left
EMD
2.15 Lakhs
Bank guarantee accepted
Document Fee
1000
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
goa → Goa
EMD Exemption
Available
Quantity
Not Available
Website
Contact Person
Address
Project Description
Tender For Demolition And Reconstruction Of Oht At Installation Mandovi
BOQ
| Sl. No. | Item Description |
| 1 | Demolition and dismantling of the existing 15.00 meter high staging Reinforced Cement Concrete (RCC) overhead water tank structure of 75000 gallon capacity, including top dome, ring beams, cylindrical container walls, floor slabs, galleries, walkways, internal/external staircases, chajjas, balconies, staging columns, braces, and ground-level or underground foundations, raft, and footings.Work shall be executed at all heights, depths, lifts, and leads, strictly conforming to safety standards (IS 4130 or equivalent) and structural stability requirements complete all as specified and as directed by Engr-in-ChargeThe scope of work is fully comprehensive and explicitly includes the following interconnected operations:-Scaffolding & Protection: Providing, erecting, maintaining, and dismantling heavy-duty, design-approved cup-lock or tubular steel staging and scaffolding up to the maximum required height. This includes installing catch platforms, heavy-duty safety industrial nets, and 100% enclosure with green debris/dust-prevention netting to completely isolate the hazard zone. |
| 2 | Controlled Dismantling & Lowering: Executing top-down demolition using specialized techniques such as diamond wire saw cutting, core drilling, high-reach hydraulic pulverisers, or controlled mechanical breakers. The item includes the safe, controlled lowering of severed concrete blocks, pipes, and heavy structural components to the ground using mechanical cranes, winches, or pulleys, strictly prohibiting the unconfined free-fall drop of debris.Foundation & Ground Breaking: Demolition of the massive ground-level column pedestals, underground foundations, and raft down to a minimum depth of 1.00 meter below the existing natural ground level using heavy hydraulic excavators equipped with rock breaker attachments. |
| 3 | Material Segregation & Scrap Management: Breaking down large demolished concrete chunks at ground level to transportable sizes (under 150 mm). This includes gas cutting, separating, straightening, cleaning, sorting, and systematically stacking all salvaged reinforcement steel bars, structural steel sections, and internal/external GI/CI/MS piping assemblies at a designated on-site location. (Note: Salvaged scrap material shall be credited as per contract conditions).Dust & Environmental Control: Operating continuous water-sprinkling systems, water tankers, or industrial mist cannons throughout the demolition cycle to achieve total dust suppression and comply with environmental pollution control norms.Site Safety & Perimeter Protection: Erecting and maintaining a 3.00-meter-high temporary corrugated GI sheet barricading wall around the entire operational footprint, complete with high-visibility reflective caution tape, night-warning LED blinkers, hazard signage, and dedicated safety watchmen/traffic marshals |
| 4 | Removing all unserviceable muck, concrete debris, and demolition slush from the site by Manual/ Mechanical loading, handling, and The scope explicitly covers sorting, loading onto commercial tipper trucks, and transportation/ carting away of all waste materials completely outside defense land to an authorized dumping ground or registered waste recycling plant located at a lead distance beyond 30 Km from the site. This includes securing defense gate passes, tracking via transit slips, paying all tipping fees/taxes, and leaving the entire defense site completely cleared, leveled, dressed, and safe for subsequent use complete all as specified and as directed by Engineer-in-Charge |
| 5 | Material and labour for providing, assembling, testing and commissioning approved make factory manufactured Hot Pressed Moulded Sheet Moulding Compound (SMC/GRP) Panel Water Storage Tank having net storage capacity of 341 KL (Approx. Size 12.00 m × 10.00 m × 3.00 m), complete in all respects, erected over RCC staging at approximately 15.00 m height, including all labour, materials, tools and plants, lifting arrangements, transportation, loading, unloading, testing and commissioning as specified herein.The tank shall be manufactured from hot pressed moulded food grade SMC/GRP panels suitable for storage of potable water and shall conform to the requirements of IS 14399:1996 (Part I & Part II) or latest revision, IS 17243 (where applicable), IS 2062, IS 800, IS 875 (Part 1, Part 2 & Part 3), IS 1893, IS 3370 and all other relevant BIS Specifications/Codes as amended up to date. The tank shall be modular in construction consisting of interchangeable panels of sizes 1000 mm × 1000 mm, 1000 mm × 500 mm and 1000 mm × 2000 mm, factory moulded under hydraulic hot press and assembled at site strictly in accordance with the approved manufacturer's design and recommendations. |
| 6 | The SMC panels shall be manufactured from premium quality unsaturated polyester resin reinforced with alkali-free glass fibres and shall be UV stabilised, corrosion resistant, fungus resistant, weather resistant, non-toxic and suitable for storage of potable water. The minimum panel thickness shall not be less than 18 mm for bottom panels and bottom corner panels, 16 mm for first tier side wall panels, 14 mm for intermediate side wall panels, 12 mm for top tier side wall panels and 10 mm for roof panels. Wherever the manufacturer's approved structural design requires thicker panels based on hydrostatic pressure, wind load, seismic load or any other design requirement, thicker panels shall be provided without any extra cost to the Government.Under no circumstances shall panel thickness less than those specified above be accepted. |
| 7 | The tank shall be supplied in ready-to-assemble condition and assembled at site using minimum Grade 8.8 High Tensile Hot Dip Galvanized or Olive Green coated nuts, bolts and washers together with minimum 75 mm wide × 3 mm thick food-grade butyl rubber sealing tape/gasket placed continuously between adjoining panels to ensure complete watertightness throughout the service life of the tank. The sealing tape shall be non-toxic, non-shrinkable and suitable for potable water applications. |
| 8 | The external structural support system shall consist of Hot Rolled Mild Steel ISMC 150 or ISMB 150 sections as minimum size, conforming to IS 2062 Grade E250, or larger sections wherever required by the approved structural design. The structural framework shall comprise vertical supports, horizontal stiffeners, tie rods, diagonal bracings, gusset plates, cleats, anchor brackets and all necessary structural members required to safely withstand the hydrostatic pressure of the fully filled tank together with dead load, live load, wind load and seismic load. The spacing of vertical supports shall be as per manufacturer's approved design but shall not exceed 6.50 metres centre-to-centre. The vertical supports shall extend above the roof level of the tank to facilitate safe movement and inspection over the tank roof. |
| 9 | All structural steel members forming part of the tank shall conform to relevant BIS Specifications and shall receive proper surface preparation followed by one coat epoxy zinc phosphate primer and two coats high-build epoxy paint of approved shade. Wherever hot dip galvanizing is specified, the galvanizing shall have a minimum zinc coating of 610 g/m² (approximately 85 microns) after fabrication. |
| 10 | The rate shall include supply, fixing and commissioning of FRP lockable manhole, FRP internal ladder, FRP external ladder extending from the base of the tank to the roof level, manual type water level indicator, air vent fitted with stainless steel insect-proof screen, inlet, outlet, overflow, scour, drain and vent nozzles complete with puddle flanges, all necessary gaskets, brackets, sealants, fasteners, anchor bolts and accessories required for complete installation and satisfactory operation of the tank. |
| 11 | After completion of erection, the tank shall be hydraulically tested by filling with water up to its full capacity and maintaining the water level continuously for a minimum period of 48 hours. During testing there shall be no leakage, sweating, seepage, deformation, bulging, distress or structural instability in any panel, joint or structural member. Any defect observed during testing shall be rectified by replacing the defective panel, gasket, fastener or structural member and the hydraulic test shall be repeated at the contractor's own cost until satisfactory performance is achieved |
| 12 | The contractor shall submit for approval manufacturer's catalogues, detailed shop drawings, panel layout drawings, fabrication drawings, structural calculations, design calculations for panel thickness and supporting members, anchorage details, fabrication methodology, installation methodology, quality assurance plan, factory inspection reports, BIS licence, ISO certificates and structural stability certificate duly signed by a Chartered Structural Engineer/Registered Structural Engineer before commencement of manufacture.The complete structural design of the tank, including panel thickness, tie rods, bracing arrangement and supporting members, shall be certified by the manufacturer and vetted by the Chartered Structural Engineer. No fabrication shall commence without written approval of the Engineer-in-Charge. |
| 13 | The SMC panels shall be tested in a NABL Accredited Laboratory and/or IIT/NIT/Government Engineering College, wherever such testing facility is available, and original test certificates shall be submitted before dispatch. The tests shall include :-(i) Flexural Strength Test, (ii) Tensile Strength Test, (iii) Compressive Strength Test,(iv) Impact Strength Test,(v) Barcol Hardness Test, (vi) Water Absorption Test, (vii) Specific Gravity Test, (viii) Resin Content Test, (ix) Glass Fibre Content Test, (x) Hydrostatic Pressure Test, (xi) Potable Water/Food Grade Suitability Test, (xii)UV Resistance/Accelerated Weathering Test, (xiii)Dimensional Accuracy Test, (xiv) Panel Thickness Verification Test, (xv)Leakage Test, (xvi) Joint Seal Compatibility Test and (xvii)any other test considered necessary by the Engineer-in-Charge to establish conformity with the relevant BIS Specifications. |
| 14 | The GE or his authorised representative shall have the right to inspect the manufacturer's works at any stage of manufacture and witness the testing of panels and accessories before dispatch. Any material found not conforming to the approved specifications shall be rejected and replaced by the contractor at no extra cost to the Government. |
| 15 | The manufacturer shall possess a valid BIS Licence for manufacture of SMC panel tanks and shall operate under a certified ISO 9001 Quality Management System. |
| 16 | The contractor shall provide a comprehensive warranty of Two (02) years from the date of successful testing and commissioning. During the warranty period, any manufacturing defect, leakage, seepage, panel cracking, bulging, deformation, joint failure, corrosion of structural members, failure of accessories or any defect attributable to materials, manufacture or workmanship shall be rectified immediately at no additional cost to the Government. Any defective panel, structural member, bolt, nut, washer, gasket, sealing tape or accessory shall be replaced with a new component of identical or superior specification. Repair by patching, sealant application or temporary measures shall not be permitted unless specifically approved by the Engineer-in-Charge. The contractor shall ensure that the tank remains completely watertight and fully serviceable throughout the warranty period. Please Enable Macros to View BoQ information |
| 17 | The contractor shall provide a comprehensive warranty of Two (02) years from the date of successful testing and commissioning. During the warranty period, any manufacturing defect, leakage, seepage, panel cracking, bulging, deformation, joint failure, corrosion of structural members, failure of accessories or any defect attributable to materials, manufacture or workmanship shall be rectified immediately at no additional cost to the Government. Any defective panel, structural member, bolt, nut, washer, gasket, sealing tape or accessory shall be replaced with a new component of identical or superior specification. Repair by patching, sealant application or temporary measures shall not be permitted unless specifically approved by the Engineer-in-Charge. The contractor shall ensure that the tank remains completely watertight and fully serviceable throughout the warranty period. Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Aug 27, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedSep 24, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 25 daysSep 26, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 27 daysTender Documents
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