Restoration of rain damages to GWSS for Multi villages of GP Nohradhar UNDER Special Central Assistance

Designing, Constructing, Testing & Commissioning of Water Treatment Plant (Rapid Sand Filter) including cost of site development i/c retaining walls/ breast walls to adjust hydroulic leves as per contour plan and structural requiremnts Construction of all civil works, hoisting and erection of steel works, providing and installation of mechanical equipments/Electrical equipment/accessories and machinery, laying of interconnecting CI/GI/MSERW pipes with required valves with chambers and scouring arrangement from all units with disposal arrangement to appropriate place i.e. nearby Nallah/Khad/Natural drainage and all types of valves fittings and other works contigent there to capable of taking inputs and giving outputs as per CPHEEO manual under all climatic conditions specified therein. As per design parameters specification and condition, the treatment plant includes construction of inlet chamber, pre settling tank, row water tank, cas code aerator parshall flume units for chemical handling and feeding for coagulation and flocculation with mechanical scrapper and V notch, approach channel, alum solution tanks with filter media as per specifications alum dozer, lime solution tanks, mixing channel with mechanical mixture, flocculator etc. settling tanks, sedimentation tank , tube settler, rapid sand filter, back wash unit with pumping arrangement, chlorination units for disinfection and plant building comprising office,laboratory based on manual on water supply and treatment published by CPHEEO, Ministry of Urban Development Govt. of India New Delhi (latest edition with up to date amendment). All the structures shall be interconnected by 1.20 mtr. wide path with railings . Proper walkways shall be made in the boundary limit of plant area. This further included combinations of various treatment unit based on flow dia. gram as per above manual for consideration of alternative proposals or any other low cost treatment methods based on existing plants working under similar conditions with performance certificates. The structures to be designed and constructed in RCC with M30 design mix as per latest relevant IS codes based on measured SBC.

Excavation in foundation and trenches in all type of soil such as pickwork jumper work Kankar, moorum, shingles including decomposed soft and hard rock etcupto all heights stacking the excavated earth not more than 3mtrs clear from the edge of excavation and then returning the stacked soil in 15cm layers when required into plinths sides of foundations etc. consolidating each deposited layers by ramming and watering and then disposing of all surplus excavated earth in all leads and lifts as per the direction of Engineer in-charge. please refer data sheet

Providing and laying cement concrete plum concrete 1:5:10(1cement:5sand:10graded stone aggregate 40mm nominal size) with 15% plum and curing complete excluding cost of form work in retaining walls/breast walls, the size of plums shall usually be 150mm to 300mm as per HPPWD specification. including entire carriage of material upto all leads and lifts.

Providing and laying cement concrete 1:3:6(1cement:3 approved sand:6 app.graded stone aggregate 40mm nominal size) and curing complete excluding cost of form work in foundation and plinth and as per the direction of Engineer-in-charge including entire carriage of material upto all leads and lifts.

Providing and laying cement concrete 1:1.5:3(1cement:1.5approved sand:3approved graded stone aggregate 20mm nominal size)and curing complete excluding cost of form work and reinforcement for reinforced concrete work in:-

foundation and plinth with in all leads and lifts and as per the direction of the Engineer in charge.

Wall (any thickness but not less than 0.1m thickness) attached pillasters,buttresses plinth and string courses etc. from top to foundation level upto floor two level and as per the direction of Engineer-in-charge.including entire carriage ofmaterial upto all leads and lifts.

Providing and laying reinforced cement concrete work 1:2:4 ( 1 cement :2 sand :4 graded stone aggregate 20 mm nominal size ) excluding cost of form work and reinforcement for reinforced concrete work in suspended floors, roofs, landings, shelves and their supports balconies beams, girders bressumers and cantilevers upto floor two level in all heights and depths includiing all leads lifts and carriage of material at site and as directed by the Engineer Incharge.

Providing form work with steel plates 3.15mm thick welded with angle iron in frame 30x30x5mm so as to give a fair finish. Including centring,shuttering strutting and propping etc. with wooden battens and ballies height of propping and centring below supporting floor to ceiling not exceeding 4mtrs and removal of the same for insitu reinforced concrete and plain concrete work in:-

Flat surfaces such as soffits of suspended floors, roofs, landings and the like, floors etc., up to 200mm in thickness.

Vertical surface such as wall of (any thickness) partition and the like including attached pillaster buttresses plinth and string courses and like and as per the direction of Engineer-in-charge .including entire carriage of material upto all leads and lifts.

Providing tor steel reinforcement for RCC work including bending,binding and placing in position complete upto floor two level.as per the direction of Engineer-in-charge including entire carriage of material upto all leads and lifts.

Providing in RCC work smooth finishing of the exposed surface with cement mortar 1:3 (1 cement : 3 sand)

steel work welded in built up sections, trusses, framed work, including cutting, hoisting, fixing in position and applying a priming coat of red lead paint in gratings, framed guard bars, ladders railling, brackets and similar works with all leads and lifts.

Providing and fixing double flanged cast iron sluice valve (with hand wheel) of following dia. of brass, spindle as per IS 780 class PN-1.6 and capable of with standing the normal seat pressure as per IS 5312-1884 P-1 and as per direction of the Engineer- in-charge upto all lead and lifts.

150 mm dia

Excavation in drains and channels etc in earth work in all kinds of soil such as kankar moorum , shingles, conglomerate saturated soil decomposed of soft rock & hard rock by blasting including dressing of sides and beds, disposing of excavated earth with in all leads and lifts, disposed earth to be levelled and neatly dressed and then returing the stacked soil in to foundation and trenches etc including ramming and watering and consolidating the same whereever required with all leads, lifts and including jungle clearance and as per the direction of the Engineer Incharge.

Providing, laying, Jointing and testing in trenches galvanized mild steel tubes (Light grade) tube fitting such as tees, bends, unions etc following dia metres of GMS pipes ( Earth work to be measured and paid for separately ) including all leads , lifts and carriage of material at site and as directed by the Engineer Incharge.

25 mm dia (L)

32 mm dia (L)

150 mm dia (scour pipe)

Providing, laying , jointing, testing & commissioning at site in trenches following plain ended GMS pipe of following dia. of heavy/medium grade as under conforming to BIS 1239 (part-1) 1990 or latest with upto date amendments, capable of withstanding required test pressure as prescribed in BIS code in random lengths of 5.5 to 6.5 mtr. The pipes ends shall be bevelled suitable for butt weld, including the cost of jointing with butt welding conforming to IS 816-1969 or latest as applicable (leak proof) in three layers at site of work with welding rods of standard make and all allied accessories whatever required for welding at site tail pieces tees bends manufactured from parent pipes etc. and cutting of pipes wherever rerquired as per site requirement including carriage in all leads and lifts as directed by Engineer-in-charge (earth work shall be measured and paid for separately).

RD Dia Grade

0 to 2500 150 mm Medium

Providing welding and fixing M.S plate flanges of following dia (nominal bore) of following flanges Table conforming to IS 6392-1971 or latest with upto date amendments to MSERW/G.I. pipe after every 100 metres or as per site requirement including cutting of pipes wherever required welding in three layers (leak proof) conforming to specifications as prescribed in relevent IS code i.e IS 816-1969 or latest as applicable with upto date amendments with nuts, bolts & washers and specials etc. fonforming to IS 1963 or latest with upto date amendments including packing sheet i.e. asbestos fibre sheet minimum 3mm thick and painting with anticrossive paints complete in all respect in all leads lifts and carriage of material at site and as directed by the Engineer-in-charge.

Dia Flange table

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