Repairing/retrofitting/renovation of Effluent Treatment Plant buildings at GSECL Sikka TPS.

MS Scaffolding: Supplying, erecting scaffolding up to required height with necessary H-frames, pipes, couplers, buckles, bracings, top platform with support railing at top etc. including carriage of the materials to the location, erecting, fixing the scaffolding and dismembering the same after working and taking away the scaffolding materials etc. complete as per direction of engineer-in charge.

Safety net: Providing and fixing dust proof safety net with all required accessories and fixing arrangement so as to enclose the areas of work and prevent spreading of dust and all kinds of debris generated during the work, including, all as per site requirement and as per directions of Engineer-In-charge

Removal of damaged plaster: Dismantling existing damaged/loose plaster on RCC members or walls by mechanical means or by manual chipping without damaging the existing structure, raking out joints and cleaning the surface to remove all dust, loose particles, laitance etc. from the surface., etc. complete.

Removal of damaged concrete: Removing, chipping and cleaning of existing loose and damaged concrete carefully by low impact high frequency hammer or by manual chipping without damaging the existing concrete or controlled sand blasting including cleaning the surface by air jet or as per direction of Engineer in charge.

Application of rust converter: Clean existing reinforcement with wire/ rotary wire brush making the surface free from loose material, dirt, etc. complete, Apply alkaline rust converting primer Feovert or equivalent on the rebars by brush, including material, labour, etc. all as directed by Engineer-in-Charge. (Mode of measurement: per sqm of breaking area of concrete.) The application shall be as per Manufacturer's specifications and as directed by Engineer-In-charge.

Anticorrosive coating: Providing and applying anti-corrosive epoxy phenolic coating IPNet-RB or equivalent (CSIR or CBRI know how) in 2 coats with time interval of minimum 6 hours. The coating shall have ECorr value of -45 mV against SCE in 3.5 NaCl for 100 hours and electrochemical evaluation of max 0.5 mA per cm2. This coating shall be applied over Feovert coated rebars.

Corrosion inhibitor coating: Providing and applying concrete penetrating, migratory bipolar corrosion inhibitor EPCO KP-100 conforming to ASTMG-109) by brush or spray with dosage of 4Sqm per ltr, over the entire chipped off or exposed concrete area including material, equipment, labour etc. complete in order to arrest further corrosion of reinforcement bars. The application of EPCO-KP-100shall reduce the corrosion in terms of coulombs by 30 percentage minimum upon migration through the embedded side of concrete as measured by mA - hrs.

Canodes for Corrosion protection: For new reinforcement bar introduced Supplying & fixing Galvanic CANODES (60 mm x 30 mm) in compliance with ASTM B 418 Type II in RCC after tying them to it in a grid fashion of 1 m x 1 m to achieve corrosion potential more negative than rebar.

Fixing of packers: Clean the existing surface to remove all dirt, dust, loose materials and other contaminants, Drill holes of suitable diameters up to 20mm at an angle of 45 degree in a staggered manner across the deteriorated/ cracked concrete surface, at 300-500 mm center-to-center or as per site requirement. Clean the holes with air blowers and Fix NRV metal packers in the cleaned holes with epoxy putty, etc. all complete as directed by Engineer-in-charge.

Pressure injection grouting:Providing and repairing damaged concrete portion by applying low viscosity, moisture compatible repair mortar system EPCO 2020 LV having excellent bonding & setting characteristics (even in presence of water), by mixing in the ratio Part A : Part B (2:1), having compressive strength of 60MPa & Flexural strength of 30 Mpa Grouting to be done in cracks till the nozzle refuses to accept the grout or it flows from the adjacent nozzle and removing the nipples & sealing it with non-shrink epoxy sealant.

Additional steel reinforcement: Provide and fix TMT bars FE 500D as replacement of damaged reinforcement bars and as additional reinforcement of any dia. as per site requirement all as specified & as directed, including decoiling, straightening, cutting, bending and binding with coated binding wire. The rate shall include cost of binding wire, chairs, spacers, pins, etc. which will not be measured separately for payment, along with anchor grout Lokfix E77 or equivalent for anchoring the rebars into existing concrete, etc. all as specified and directed.

Polymer modified mortar: Providing and applying shrinkage compensated, fiber reinforced, Polymer modified, cementitious repair mortar to repair broken and deteriorated concrete patches. The application procedure includes mixing the powder product with adequate quantity of clean water as per Manufacturer's specifications, mixing thoroughly to obtain a smooth, homogeneous material of trowellable consistency, and then applying the same with trowel to the surface while the bond coat is still tacky, etc. complete. The material shall have Flexural strength less than 9 MPa at 28 days (as per BS EN196 Pt 1), Tensile strength less than 4 MPa at 28 days (as per BS 6319 Pt 7), Compressive strength up to 70 MPa at 28 days (as per BS 6319 Pt 2). It should have water absorption greater than 2 percentage (as per BS 1881 Pt 121) and permeability greater than 5mm (as per DIN 1048 Part 5). It should have fire rating of Class A1 (EN 1504-3 cl 5.5). The application shall be carried out as per manufacturer's specifications and as directed by Engineer-in-charge. Rate for Application thickness of 40mm. Additional thickness will be charged extra. Make: Renderoc SP 40 of Fosroc or equivalent.

Epoxy bond coat: Providing and applying high strength solvent-free epoxy resin based bonding agent for effective bonding of the new repair material to the existing concrete, including mixing of the two components - base and hardener thoroughly until a homogeneous mixture is obtained, applying with soft bristle nylon brush on the prepared substrate where new concrete or mortar is to be placed, ensuring that the bond coat is in tacky state while placing the repair material, etc. complete all as directed by Engineer-In-charge. The bonding agent material shall have specific gravity of 1.15 to 1.2 g/cc; Compressive strength of 50 MPa @ 7 days (as per BS 6319 Pt 2); Flexural strength of 35 MPa @ 7 days (as per BS 6319 Pt 3); Tensile strength of 20 MPa @ 7 days (as per BS 6319 Pt 7); Shear strength of 10 MPa @ 7 days (as per BS 6319 Pt 4) and the adhesive bond to concrete substrate shall exceed the tensile strength of host concrete. The application shall be as per Manufacturer's specifications and as directed by Engineer-In-charge. Make: Nitobond EP of Fosroc or equivalent.

Formwork/ Shuttering: Providing and fixing leak-proof shuttering, including centering, shuttering, propping, etc. all complete as per site requirement and as directed by Engineer-in-charge.

Plaster: Providing and applying Ready-to-mix cement plaster with high quality Polymer additives in average thickness of 24 mm or as per site requirement including adding adequate quantity of water to the powder content of the product and mixing until a uniform trowellable consistency is achieved, applying the material with trowels or any other suitable spreader, etc, all complete as directed by Engineer-In-charge.

Protective coating: Providing and applying Epoxy and Polyurethane based multi-coat protection system (CSIR- CECRI) know how technology consisting of redoxide primer coat, ironoxide middle coat, Titanium dioxide top coat and final Aliphatic Polyurethane based finish coat. The application includes surface preparation, cleaning of dust, dirt, treatment of surface irregularities if and as required, followed by application of the protective coats. The application of each coating includes thoroughly mixing the base and hardener components until homogeneous material is obtained, and applying the mixed material in seamless coats over the entire prepared surfaces. Item rate is inclusive of all materials, labour, tools and tackles, etc. complete as per specification and as directed by Engineer-In-charge. Make: Karaikote 4 coat system.

Providing and installing FRP panels in doors, windows, chajjas, etc. in required thickness as per site requirement including all materials, accessories and fittings of SS 316, labour, tools & equipment, all complete as per directions of Engineer- In-charge

Dismantling tiled of stone floors laid in mortar including stacking of serviceable materials and disposal of unserviceable materials with all lead and lift.

Dismantling doors, windows, ventilators etc. (wood or steel) shutters including chowkhats architraves, holdfasts and other attachment etc. complete and stacking them within all lead and lift.(i) Not exceeding 3 Sq.M. in area.

Dismantling C.I. pipes G.S.W. pipes and A.C. rain water pipes with fittings and clamps including stacking the materials with all lead and lift ( for any dia, of pipe)

Dismantling steel work including distempering and stacking the materials and crediting the scrap to Main store with all lead and lift as directed by EIC.

Providing and fixing rolling shutters of approved make made of 80 mm wide M.S. laths inter-locked together through their entire length and jointed together at the ends by end locks mounted on specially designed pipe shaft with bracket plates, guide channels and arrangements for inside and outside locking with push-pull operation including the cost of hood cover and spring. etc completed (A) Shutters having width below 3.5.M.

Providing and fixing window having extruded aluminum Colour anodized section frame main outer size 63.50 x 38.10 x 1.95 mm,atWt 1.094 Kg per Rmt, horizontal two track member size 61.85 mm x 31.75 mm x 1.20mm at wt. of 0.695 Kg/mt, vertical member of size 61.85 mm x 31.75mm x 1.30 mm at wt. of 0.659 Kg/mt with sliding shutters of horizontal member size 40mm x 18mm x 1.29mm at wt. of 0.456Kg per mt, vertical member of size 40mm x 18mm x 1.29mm at wt. of 0.456Kg per mt, at Wt. 0.457 Kg per mt with 5 mm thick transparent bronze colour tinted float glass with powder coated aluminum fittings and fixtures and transparent silicon sealant glass fixing to frame as per details etc complete for window.

Providing and fixing standard extruded of alluminium section of size 63.50 x 38.10 x 1.95 mm, at Wt 1.094Kg per Rmt with colour anodized alluminium frame with 5 mm thick transparent bronze colour tinted float glass as details etc complete for Fix window.

Providing and laying polished kota stone slab 25mm thick in sides of window or door laid on 10mm thick cement mortar 1 gem 3 (1-Cement gem 3 coarse sand) and jointed with gray cement slurry mixed with pigment to match the shade of slab including rubbing and polishing etc. complete.

Providing, laying and jointing in true line and level 110 diametre U.P.V.C (Type B) conforming to IS 13592-1992 with one end plain and other end socketed with rubber ring, & fittings conforming to ISI 14735-1999 of approved make for drainage system pipe line, pipe shall be jointed with each other with rubber lubricant, pipe shall be fixed on wall using of PVC clamp of the size 110 mm diametre x 149 mm length x 145 mm heigh at every 2000 mm center to center or shall be concealed in walls as directed including necessary fittings such as bends, shoes etc. including testing of pipes and joints and jointed with adhesive solvent cement including cost of all materials.

Providing and Erection of FRP grade Hand railing (two tier, 1.5 mtr height, Vertical Support after 1.5 mtr each, including toe guard)

Providing and applying one coat of water based cement interior primer of approved brand and make as mentioned below on surfaces after thoroughly brushing the surface free from mortar droppings and other foreign matter. Item includes making the surface even and smooth by sand papers/ brush /cloth etc. Rates are inclusive of all the material and labourers and scaffolding work, cleaning of the floors etc. required for the work. - 1. Asian Paint Decoprime Cement Primer, 2. Nerolac Paint Nerolac Cement Primer, 3. ICI Dulux (Akzo Nobel) Lite Master primer, 4. Berger Paint BP Cement Primer, 5. GROWEL Paint Kangaroo Cement Primer

Providing and applying two coats of washable interior emulsion paint (excluding priming coat) of approved brand and make as mentioned below on surfaces to give an even shade including finishing and thinning as per manufacturer's specification after thoroughly cleaning the surface free from mortar droppings and other foreign matter. Item includes very minor touching with lapi whenever required, making the surface even and smooth by sand papers. A gap of 6 hours should be given between two subsequent coats. Rates are inclusive of all the material and labourers and scaffolding work, cleaning of the floors etc. required for the work. - 1. Asian Paint : Premium Emulsion, 2.Nerolac Paint : Lotus Touch, 3. ICI Dulux (Akzo Nobel) ICI Dulux 3 in 1, 4. Berger Paint Easy Clean, 5. GROWEL Super Acroplast Plastic Emulsion Paint

Providing and laying cement concrete flooring 1 gem 2 gem 4 (1- cement gem 2-coarse sand gem 4-graded stone aggregate 20mm nominal size) laid in one layer and finished with a floating coat of neat cement. (B) 50mm thick.

Providing and laying water proofing treatment with three layers fully bonded system, comprising first layer, middle layer and cap sheet. First layer and third layer polyethylene foil, middle layer with non woven polyester mat of 160 grams per sq. mtr. High density polyethylene film (PE) inforcement. All the layers of felt shall be fully bonded with polymer bitumen weight of the felt is 4 Kg. per Sq. Mtr. Softening point more than 150 degree Centigrade. The special treatment over terrace of any type of building and any height as directed by EIC, Including cleaning the terrace surface with wire brush and cleaning till the satisfaction of EIC. The rate is inclusive of all materials and labour etc. complete as directed. Water proofing treatment includes the following:(A) Preparing of surface by cement plaster, Repairing of cement vata, Water spout outlet repairing , Repairing of crack by making v groove. (B) Applying a coat of bituminous primer over the surface at the rate of 0.3 Ltr. per Sq. Mtr. This coat shall be allowed to dry for about 24 hours or up to the satisfaction of EIC. (C) A coat of hot bitumen 90 oblique 15 grades IS 702, 1992 shall be applied at the rate of 1.2 Kg. per Sq. Mtr. (D) Laying the APP polymer modified membrane by using Butane or LPG torch and heating the entire membrane and then laying it since the membrane has almost 4kg of modified bitumen in it on heating it shall melt and act as an adhesive. (E) The overlaps have to be properly heat by Butane or LPG torch flam bonded with minimum 75 mm to 100 mm over lap. The membrane must be always be adhered to each other.(f) Applying two coat of Super silver shield and anti corrosive and water proofing paint with aluminum finish about 0.1 Ltr. Per Sq. Mtr. By brush. The payment of actual work done shall be measured and paid in Sq. Mt after observing no leakage.”

Steel work, welded in built up sections framed work including cutting, hoisting, fixing in position and applying a priming coat of red lead paint. (A)In beams and joists, channels angles Tees, flats, with connecting plates or angle cleats as in main and cross beams. Hip and jack rafters, purlins connected to common rafters and the like

Providing and applying Anti-Corrosive paint on various new or existing structural steel and other metal surface. The rate is inclusive of labour cost and scrapping out the corrosion, cleaning the surface by course paper, air or brush or cloth, removing all rust, grease, oil, dust, any foreign material like cement mortar, splashes etc. with wire brush and emery paper including scaffolding, platform, jhoolas and machinery, equipment required for the work shall be arranged by the contractor at his own cost and take all safety measures etc. complete as directed by EIC.

Brick work using common burnt clay building bricks having crushing strength not less than 35 kg. per Sq.Cm. in superstructure above plinth level up to floor two level in Cement Mortar 1 gem 6 (1- Cement gem 6 -fine sand)(C) Fly Ash Bricks

Any Item Executed as per R&B SOR 2024-25 as per the requirement of GSECL. Payment will be made on actually work done. Work executed as per instruction of EIC.