extension works of various drinking water supply schemes

MAINTENANCE

18.12.8:Providing and fixing G.I. pipes complete with G.I fittings including trenching and refilling etc. External work80 mm dia nominal bore

18.19.6.1:Providing and fixing gun metal non-return valve of approved quality (screwed end): 80 mm nominal boreHorizontal

50.18.9.6.1:Providing and fixing PVC pipes includings jointing of pipes with one step PVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. 50 mm dia 10Kgf/cm2

OD165169/2025-2026:Providing and fixing G.I. pipes complete with G.I fittings Excluding trenching and refilling etc. External work80 mm dia nominal bore(Modified 18.12.8)

26.35.3:Providing and injecting approved grout in proportion recommended by the manufacturer into cracks/honey-comb area of concrete/masonry by suitable gun/pump at required pressure including cutting of nipples after curing etc. complete as per directions of Engineer-in-Charge. (The payment shall be made on the basis of actual weight of approved grout injected.)Epoxy injection grout in concrete/RCC work of approved make

50.10.2:Steel work for purlin/single section with G I pipes including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete

12.50:Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm (+0.05%), total coated thickness with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling/self tapping screws of size (5.5x55mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

14.75A:Cleaning of terrace/loft water storage tank (inside surface area) upto 2000 litre capacity at all heights with coconut brushes, duster etc., removal of silt, rubbish from the tank and cleaning the tank with fresh water disinfecting with bleaching powder @ 0.5gm per litre capacity of tank including marking the date of cleaning on the side of tank body with the help of stencil and paint and disposing of malba all complete as per direction of Engineer-in-Charge. (The old date already written on tank should be removed with paint remover or black paint and if date is not written with the stencil or old date is not removed deduction will be made @ Rs. 0.10 per litre) (if during cleaning any GI fittings or ball cock is damaged that is to be repaired by contractor at his own cost and nothing extra will be paid on this account)

OD170843/2025-2026:Finish walls with Acryllic Smooth exterior paint of required shade:Old work ( Two or more coats applied @ 1.67 ltr/10 sqm) on existing cement paint surface(old data 14.66.1)

13.61.1:Painting with synthetic enamel paint of approved brand and manufacture to give an even shade:Two or more coats on new work

OD171039/2025-2026:Painting with synthetic enamel paint of approved brand and manufacture of required colour to an give even shade:One or more coats on old work(OLD DATA 14.54.1)

51.18.12.6:Providing and fixing G.I. pipes complete with G.I. fittings (Cost of fittings to be paid separately) <br> External work - 50 mm nominal dia

51.18.12.5:Providing and fixing G.I. pipes complete with G.I. fittings (Cost of fittings to be paid separately) <br> External work - 40 mm nominal dia

50.18.9.6.2:Providing and fixing PVC pipes includings jointing of pipes with one step PVC solvent cement, trenching, refilling & testing of joints complete as per direction of Engineer in Charge. 50 mm dia 6 Kgf/cm2