CONSTRUCTION FOR UPGRADATION OF MAPAO KHULLEN WATER SUPPLY SCHEME

Trace path cutting for raw and clear water main pipeline : (a) Clearing of vegetation grass, brush wood tree etc above GL and removal of rubbish upto distance of 50 m. (b) Earthwork i/c hill cutting, excavation work by mechanical means(hydraulic excavator) for length , breadth (1100x5)m and upto depth of 1.5 m including getting out the excavated soil and disposal of excavated soil, refilling of soils as directed within lead upto 50 m.

Land Development of treatment site : (a) Clearing of vegetation grass, brush wood tree etc above GL and removal of rubbish upto distance of 50 m, earthwork i/c hill cutting, excavation work by mechanical means(hydraulic excavator) for length , breadth (25 x 25 )m and upto depth of 1.5 m including getting out the excavated soil and disposal of excavated soil, refilling of soils as directed within lead upto 50 m. (b) Shingling of approach road for 800 Rm within lead of 32 km with min thickness & breadth of (0.10 x 3.00) m.

Design, Drawing, Construction, Testing and commissioning of 2 nos of: (a) weir across the stream of (30.00 x 1.60 x 1.20)m, boulder apron laid in wires crates of 4mm dia GI wire conforming to IS:280 & IS:4826 in (100 x 100) mm diagonal mesh with stones boulders weighing not less than 40 kg etc. complete. (b) RCC Intake structure (8.50 x 3.00 x 1.50) m, Collection Chamber (4.50 x 2.50 x 1.50) m in good foundation and providing, fixing and testing internal pipes (80 mm dia), pipe specials etc. complete.

Design, Drawing, Construction, Testing and Commissioning of RCC Settling Tank of size (11.00m x 5.10m x 3.00m) provided with step type aerator with inlet, wash out system, providing, fixing and testing internal pipes, pipe specials etc. complete.

Design, Drawing, Construction, Testing and Commissioning of RCC Slow Sand Filter (4.00 x 4.00)m 2 units with an area of 32 sqm having inlet, under-drainage, washout system, collection chamber with filter media of following specification- P/L of bricks 2nd Class (Local 1st class) for under drainage system of filter media i/c carriage by mechanical transportation i/c loading, unloading and stacking at site. P/L 30cm thick gravel to be laid in layers of 10cm each having effective size of 2mm to 10mm for the top layer, 15mm to 25mm for the middle layer and 30mm to 40mm for the bottom layer. P/L 60cm thick Filter media sand which shall satisfy the following specifications in respect of quality, shape and size. a) Sand should be of hard and resistant quality free from clay and fine particles, soft grain and dirt of every description. b) Silica content should not be less than 90 percent. c) Effective size should limit from 0.20mm to 0.30mm. d) Uniformity coefficient should not be less than 5%,with RCC outlet chamber, wash out system, providing, fixing and testing internal pipes, pipe specials etc complete.

Design, Drawing, Construction, Testing & Commissioning of RCC Clear Water Reservoir (140 KL cap.) with slab roofing manhole cover, wash out system ,MS Ladder, air vent, masonry chamber, with disinfection dosing unit and providing, fixing and testing internal pipes, pipe specials etc. complete.

Design, Drawing, Construction, Testing & Commissioning of RCC Zonal Reservoir 6 nos (24 KL cap.) with slab roofing manhole cover ,MS Ladder, air vent, with provision of washout system, disinfection dosing unit and providing, fixing and testing internal pipes, pipe specials etc. complete.

Design, Drawing, Construction, Testing & Commissioning of RCC Distribution tank 9 nos (5 KL cap.) with slab roofing manhole cover , MS Ladder, air vent, with provision of washout system, providing, fixing and testing internal pipes, pipe specials etc. complete.

Design, Drawing, Construction of RCC pipe support for raw water main, clear water main including barb wire fencing of 100 Rm of 1.52m with angle iron post of 50x50x6mm height with MS iron gate, protection work of treatment plant in RR work of 36 Rm all complete with necessary fitting as directed by Engg in charge.

Providing and laying of GI Pipes for Raw Water Main (100 mm dia), Clear Water Main (65 mm dia), Distribution and Feeder Lines (40 mm, 32 mm and 25 mm dia), conforming to IS:1239 (Part-I)/2004 with latest amendments, screwed at both ends as per IS:1239 (Part-II)/1992 – Fourth Revision with Amendment No. 1, in random lengths of 4 m to 7 m, for the final combined length as per approved drawings i/c excavation of trenches in all kinds of soil, sand bedding, lowering, laying, alignment, jointing and fixing of pipes, providing and fixing of GI/CI fittings (GI specials) and suitable GI valves as per relevant IS Codes, construction of necessary anchor blocks and masonry valve chambers, testing of pipes, joints, fittings and valves, disinfection of all pipelines, trial run, backfilling and compaction of trenches, restoration of excavated trenches including road restoration, transportation, handling and all incidental works, complete as directed by the Engineer-in-Charge, testing and commissioning, etc. complete of the following nominal bore sizes and quantities: (a) 100 mm dia – 600 Rm (b) 65 mm dia – 3600 Rm (c) 40 mm dia – 5000 Rm (d) 32 mm dia – 6700 Rm (e) 25 mm dia – 2100 Rm