Repair/replacement of damaged water supply line from Ponda to Residential colony at Bhabanagar. and cleaning of water storage and septic tank of Project Sr. Sec. School Bhabanagar.

Scope of Work

Opening of existing water supply GI pipe line of 125mm diameter and relaying of the same after welding the flange site ( Providing and welding the flanges to be measured and paid separately )

Welding of ms fange (is:6392-1971)of 5 100 mm dia the welding of flanges with pipe should conform to is: 816-1965 with electrode as per is :1369-1967 & 3 mm thick asbestos fibre jointing gasket sheet conforming to is:2712-1965 the welding of flange should be done in two layers on both faces to make the joints air tight & to entire satisfaction of engineer in charge

Providing and fixing 25mm dia anchor bars with one end driven into 32mm dia hole upto 0.72mtr deep i/c all ,material cost cleaniong holes, cement slurry epoxy erasin etc complte as per drawing and specification or Direction of EIC.

Providing & fixing of MS bend fixed on 100 mm dia pipe with required Nos. of bolts & nuts as per 15:1 as per 15:1369-1967 & 3mm thick asbestos fiber jointing Basket conforming to IS: 2712-1965. The welding o welding of flanges with bend should conform to IS: 816-1965 with electrode as per IS: 814-19678 welding of bend & flange/pipe should be done in two or three layers on both faces to make the joints air tight & as per the direction of Engineer-in-charge.

18.12 Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. External work 18.12.8 100 mm dia nominal bore

18.12 Providing and fixing G.I. pipes complete with G.I. fittings including trenching and refilling etc. External work 18.12.8 125 mm dia nominal bore

Providing, fixing MS flange made of 20mm thick MS plate on G.I. pipe, the welding of flanges with pipe should conform to IS : 816-1965 with electrode as per IS : 814-1967 including required Nos. of bolts & nuts as per IS:1369-1967 & 3mm thick asbestos fiber jointing gasket conforming to IS: 2712-1965.The welding of flange should be done in two layers on both faces to make the joints air tight & as per the direction of Engineer-in-charge . 125mm dia

Providing and fixing Gate valve (125mm dia) with both ends flanged as per specification complete in all respect.

Providing and fixing Gate valve (100 mm dia) with both ends flanged as per specification complete in all respect.

Providing and fixing Gate valve (80mm dia) with both ends flanged as per specification complete in all respect.

Providing and fixing Gate valve (50mm dia) with both ends flanged as per specification complete in all respect.

14.46 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)

14.49 Cleaning of under ground sump, Over Head R.C.C. Tank ( independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-Charge. The cleaning shall consist following operations:- (i)Tank shall be emptied of water by pumping & bottom shall be cleaned of slit and other deposits. (ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc.and pressure washed with water. (iii) Chlorination of RCC internal surface by liquid chlorine. (iv) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface. (v) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge. Let a underground tank of capacity 272000 litre or 272 KL and area of tank is 570sqm (a) Dewater and slit cleaning Considering through pumping 20% of water to be lifted, water discharge =(272 x 20/ 100=54.40KL) Cost of pumping water with pump of capacity 4000 litres per hours , = (54.4/4 = 13.6 hours = @ 8 hours/ day = 1.7 day)

GMS Tubes as per IS :1239 - 1990/2004 of Medium Class welded in requisite number of weld runs so as to achieve the minimum effective throat thickness of weld conforming to IS 816 -1969 specifications, by using welding electrodes of 2.5 mm to 6.3 mm of Advani Oerlikon (Adore) - CITOJET / ESAB make, conforming to IS 814-1991, at site of work complete in all respects, including manual / mechanical handling of pipes in all leads and lifts to the entire satisfaction of Engineer-in-Charge. Dia 100mm

GMS Tubes as per IS :1239 - 1990/2004 of Medium Class welded in requisite number of weld runs so as to achieve the minimum effective throat thickness of weld conforming to IS 816 -1969 specifications, by using welding electrodes of 2.5 mm to 6.3 mm of Advani Oerlikon (Adore) - CITOJET / ESAB make, conforming to IS 814-1991, at site of work complete in all respects, including manual / mechanical handling of pipes in all leads and lifts to the entire satisfaction of Engineer-in-Charge. Dia 125 mm

Cleaning of Spectic tank

GREENWILD INFRATECH PRIVATE LIMITED

VINOD CONSTRUCTION