Indian Tenders

Tender Notice

TDR 54610066
Tendering Authority Gun And Shell Factory-Calcutta
Tender No GSF/RD2526/EO (C)/Misc roof II
Tender ID 2026_AWEIL_270014_1
Tender Brief Corrigendum : Tender For Miscellaneous Roof Repairing Work At Works-I & Ii At Gun & Shell Factory, Cossipore, Kolkata-700002.
City Kolkata
State West Bengal
Document Fees Refer document
EMD INR 95116.0 /-
Tender Value INR 47.55 Lakhs /-
Tender Type Works
Bidding Type Open Tender
Competition Type Indian

Tender Details

Tender For Miscellaneous Roof Repairing Work At Works-I & Ii At Gun & Shell Factory, Cossipore, Kolkata-700002.

Corrigendum Details

Sr No CorrigendumDate Corrigendum CorrigendumType NewSubmissionDate
1 01-04-2026 CORRIGENDUM-2 Date 07-04-2026
2 24-03-2026 Bid Auto Extn Corrigendum Bid Auto Extn Corrigendum 31-03-2026
3 24-03-2026 Bid Auto Extn Corrigendum Bid Auto Extn Corrigendum 31-03-2026

Key Dates

Publish Date 01-04-2026
Last Date of Bid Submission 07-04-2026
Tender Opening Date 09-04-2026

Contact Information

Company Name Gun And Shell Factory-Calcutta
Contact Person Chief General Manager
Address Gun and Shell Factory (GSF), Cossipore

BOQ Items

Name of Work:- Miscellaneous roof repairing work at works-I & II at Gun & Shell Factory, Cossipore, Kolkata-700002.
Sl. No. Item Description
1Demoliation of brickwork, concrete work, RCC work built in cement morter, cut to reinforcement at any place and height.
2Demoliation of Mud/ damaged water proofing layers etc. of in roofs, any thickness, including plastering and leeping (whether full thickness removed or only a part thereof).
3Roughing surface of old concrete roof by picking, sweeping,clean and washing down with water to remove dust.
4M&L for 15 mm thk. 1:4 ratio new cement plaster. At any place and height. (Brand of cement : Ambuja, ACC, Ultratech or Shree Cement).
5M&L for roof treatment using 5 layered APP based polymeric membrane (centre core as 100 micron HMHDPE film sandwiched on both sides with polymeric mix and the polymeric mix is protected on both side with 20 micron HMHDPE film) minimum weight 3kg/sqm and minimum 3mm thk by first priming the roof surface with bituminous primer conforming to IS:3384 applied @ 0.40 kg per sqm followed by application of hot bonding material of blown type bitumen 85/25 grade applied @ 1.60 kg per sqm followed by laying of APP membrane using bitumen butane torch and sealing all joints and preparing the surface complete.
6M & L for Brick work with sub class brick-B in cement morter (1:6). (Brand of cement : Ambuja, ACC, Ultratech or Shree Cement).
7M&L for PCC (1:2:4) with 12.5 mm coarse aggregate, at any place and height, (Brand of cement : Ambuja, ACC, Ultratech or Shree Cement).
8S & F of Pre- painted galvalume aluminum zinc coating GI based corrugated steel sheet 0.50mm thick of an colour having tensile strength of 550 Mpa ( shape-flat / half circle as per existing roof truss shape) as in roof covering/cladding to wall, fixed with self tapping screws. Complete as directed.
9Dismantling of plain /Corrugated / semicorrugated steel sheeting any gauge and thickness, in roof covering.
10M&L for fixing of 1.00 mm thk plain galvanised mild steel sheeting in ridge, hips, valley gutter, drip, straigt flashing with grade of zinc coating 275.
11Fixing of 6 mm thk asbestos cement , (except sheets) corrugated or semi corrugated sheets in roof fixed with L-type or J-type or cranked hook bolt.
12M & L for Setting coat 3mm thick, over cement plaster 1:2 trowelled to even and smooth finish. Complete.
13M & L for preparation of new surface and applying two coats of black japan paint over steel surface.
14Taking up 100mm dia cast iron/ PVC pipe including all fittings,
15S & F of sheet glass 3mm thk. Ordinary quality, and galzing with oil putty in square n exe 0.5 sq.m. each pane.
16Supply only 150 mm dia (6\\") PVC rain water pipe. 10 feet length, single socket.
17Supply only 150 mm dia (6\\") plain PVC bend.
18Fixing of PVC (SWR) pipes (110 mm dia and above) in any length fixed to wall.
19Fixing of PVC (SWR) bend (110 mm dia and above) in any length fixed to wall.
20Removing the demolished building material outside the factory premisses.
21Recovery of old /damaged / dismanteled steel roof sheet/ gutter etc. Please Enable Macros to View BoQ information

Other Detail

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