Recovery and Reconstruction of Duwaripara PWSS under PDNA 2022 for the year 2025-26

Supplying and placing of filter gravel of uniform size and shape without flaxy shape free dust, clay, soft grains, dirt and other foreign materials, washed and screened to different sizes as given below as per IS 8419 (Part-I) : 1977 all complete as directed. 2mm to 6mm

7mm to 12mm

13mm to 25mm

26mm to 32mm

33mm to 40mm

Supplying and placing of filter sand of hard and resistant quartz, uniform size and shape free from dust, clay, soft grains, dirt and any other foreign materials including inorganic salt and organic substance, washed and screened. Having uniformity coefficient between 1.3 to 1.7, effective size between 0.45 to 0.70mm, ignition loss not exceeding 0.7% by weight, soluble fraction in Hydrochloric acid not exceeding by 5% by weight, silica content not less than 90%, specific gravity between 2.55 to 2.65, wearing loss less than 3% as per IS: 1419 (Part-I):1977 all complete as directed.

Labour carge for changing of rapid sand filter with gravel and sand of different sizes including unloading the same. (i) skilled labour

(ii) Ordinary labour

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil.

Dismantling of C.I sluice valve including stacking of useful materials within a lead of 50 metres. Upto 150 mm diameter

Providing and fixing C.I. sluice valves (with cap) complete with bolts, nuts, rubber insertions etc. (the tail pieces if required will be paid separately) : 150 mm diameter Class II

100 mm diameter Class I

Cleaning, washing and disinfection of RCC underground reservoir, pumping out of stored water from the UGR, removal of mud, garbage and other disturbed elements etc. settle down at the bottom of the UGR and disposal of mud, garbage etc., to distant safe place including complete washing the tank with bleaching powder etc. complete as directed.

Supplying, installation, fitting & fixing, testing and commissioning of Electric driven 3-phase (for 5HP/ 7.5HP/10HP/12.5HP) / Single phase (for 1 HP / 2HP/ 3 HP pump) Centrifugal pump set of approved make with bronze impeller of suitable diameter with G.I. suction pipe, suction strainer, non-return valve, delivery piping up to sluice valve all complete. The pump set should be coupled with electric motor drive of adequate power suitable for operation at 230V / 415 V, 50 Hz input power with DOL Starter /Star delta Starter including Electric Control panel board enclosure made of MS Sheet duly painted with Anti- corrosive paints complete, fitted with all electrical accessories i.e, Complete wiring from Panel Board to Main Line including supply of Aluminium Armoured Cable of adequate cross section, Earthing wire and all necessary materials for the same, including cost of CC pump foundation with base plate complete and other accessories and labour charge for the installation of the pump etc. all compltete as specified and directed by the Department with One year warranty from the date of commissioning and satisfactory testing against any manufacturing defect. (If any such defect is found during the year from the date of installation and satisfactory testing, supplier will have to rectify the defect at their cost and risk & if necessary replace the pump set.) Test Certificate of Pump, Motor , Starter, Panel Board, etc from tyhe manufacturer shall have to be submitted: 5 HP pump 3 phase

Providing, Laying, Jointing & field testing of HDPE pipes (High Density Polyethylene Pipes-PE 100) confirming to IS 4984/2016 with necessary jointing material like mechanical connector of jointing pipes by heating the ends of pipes with the help of Teflon coated electric mirror/ heater to the required temperature and then pressing the ends together against each other, to form a monolithic & leak proof joint by thermosetting process. It may be required to be done with Jack/ Hydraulic Jacks/ Butt fusion machine.(50 mm & above jointed & below 50mm mechanical jointed). The HDPE fitting should be ISI marked conforming to relevant BIS code. 125 mm dia HDPE PN 6

110 mm dia HDPE PN 6

90 mm dia HDPE PN 6

75 mm dia HDPE PN 6

63 mm dia HDPE PN 6

Construction of Brick masonry Sluice Valve Chamber 750mm(L) x 750mm(B) x 1250mm(H) inside, in 230mm brick work in cement mortar 1:5 (1 cement : 5 coarse sand) and precast R.C.C cover slab in prop. 1:2:4 mix (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size ) reinforced with 10 mm M.S. bar @ 150mm centre both ways tying with 20 gauge black annealed wire including necessary earthwork (excavation and return filling), 75mm PCC in prop. 1:4:8 (1 cement: 4 coarse sand : 8 coarse agg.) over brick flat soling and 15mm thick inside plastering and outside plastering in position, fitting and fixing 80mm diameter CID/F sluice valve all complete as directed. Approved good for construction drawing will be issued by the dept. A) For 100mm dia Sluice Valve against 90mm/75mm Distribution pipe line - 1 nos. 80mm dia CID/F ssluice valve with cap/wheel as per IS 14846-2000 PN 1.0 with ISI marking, 2 nos. 80mm dia GI Nipple(225mm long), 4 Nos. 80mm dia GI Threaded Flange, 2 bolts & nuts and 6nos. 3mm thick rubber insertion sheet for 100mm dia pipe

Construction of Functional Household Tap Connection including earthwork in excavation for pipeline (both for connection in distribution line and service connection) and refilling, dressing, etc., providing PVC Saddle piece of average size 110mm x 15mm (i.e. ranging from 63mm to 140mm) and make supreme or equivalent, making holes in the distribution pipe, providing 15mm dia bronze ferrule cock (PN-16) conforming to IS;2692(1989) as ammended and make Zoloto or equivalent, connecting it to the saddle piece , providing and fixing 3 layer (Outer green / GREY coloured UV stabilised, middle black coloured UV stabilized and intermost layer white coloured with.... brand of equivalent quality and PN-16 Pipe, 20mm OD, SDR-7.4) including all plain PP-R fittings and brass threaded PP-R fitting and clamping, cutting and making good to the damages, including all taxes and duties as applicable and including the cost of all required labour and materials as directed and specified... dia bar embeded to RCC Post in proportion 1:1.5:3 with 4nos 10mm dia main and 6 mm dia stirrups @150 C/c and fixing 15mm dia PPR pipe to the hydrant, with 6mm rings embedded in concrete for anchoring inclusive of cost of tranportation to site and also supplying, fitting, fixing PVC Bib cock all complete as directed and specified. Approved good for construction drawing will be issued by the dept.

Labour charge for making bore hole horizontally across road or embankment for crossing distribution pipe line including fitting fixing of GI casing pipe of required dia including the cost of pipe all complete as directed by the dept. 80 mm boring for 65mm dia pipe

100 mm boring for 80mm dia pipe