Bhalson Pumping water supply scheme in Block Gairsain of District Chamoli

Amount

PART- A ( CIVIL WORKS ):- Survey, design, drawing, testing of bearing capacity, hydrological, geological survey and construction of water tight circular R.C.C. Dry Intake well cum pump house at the bank of gadhera Atagad near Village Adibadri with R.C.C. approach bridge of approximate 15 m length and 2.5 m width (including installation of railing) to withstand safely against the river current (last 30 year)/ discharge, seismic/wind or all other natural effects and suitable for taking approximate 0.18 MLD raw water discharge (in 16 hours), including supply of all material, labour, T&P etc. required for proper completion of work. Inner diameter of well shall be 6.0 metre. Height of well is approximately 11.50 metre (from raft level to 2.0 M above H.F.L. of Atagad gadhera at Adibadri Village) and depth of foundation below G. L. is assumed 4.0 M, which is liable to change according to geo-investigation, structural design and site conditions and HFL of river in last 30 year. Height of pump house will be 3.50 m (including space required for Motors, HT Pannels etc.). At least three inlets (on different levels/heights) with a common header should be installed at/above intake floor with stainer to tap river water, M. S. girder 350 mm , sluice valves as required, 1.00 metre wide balcony all around the well shaft above HFL, doors and windows, pump foundations, internal and external electrification work, painting, distempering and snow-cam all inside and outside of well, four layer M. S. railing should be on approach bridge/balcony with hand railing and there should be 0.75 metre wide MS ladder from pump house floor to bottom of intake. The rates should be inclusive of river diversion work(coffer dam) ,all excavation required for well and bridge and dewatering etc. The overall height of intake well is taken approximately 15.00 metre from top of raft foundation to pump house roof top, which will change according to conditions mentioned above. For any increase/decrease in these heights/lengths, rates are shouted below.) The well should have all provisions for pumps installation of required capacity including all labour material T&P or as directed by Engineer in Charge.

Rate for variation in height of Intak well

for increase in height

For decrease in heigh

Rate for variation in length of approach bridge of Intak well

for increase in height

For decrease in heigh

Survey, hydraulic/structural design, drawing, testing of soil bearing capacity and construction of water tight R.C.C. 0.18 MLD Capacity (Raw water in 16 hours) rapid gravity filter treatment plant. The design of filter plant has to be done on the CPHEEO manual for water supply and treatment. The filter plant consists of raw water inlet chamber with flow measuring device, P.S.T., Flocculation unit, S.S.T.(capable to remove all suspended monsoon impurities of river muddy water for removing maximum turbidity up to 1200 NTU), chemical house, laboratory, Rapid sand filter with alum dozer, bleaching or chlorine mixing dozer & back wash tank, operation platform, fixing of blower compressor, clear water chamber, approved filter media, gate/sluice valves and their chambers and all other appurtenant works. Including supply and fixing pipe for proper drainage arrangement upto out side of the WTP campus, MSERW pipes for connecting the units, electrification and lighting arrangement inside and outside of operating platform and filter, doors and windows in operating room, painting, distempering and snowcem all inside and outside of WTP, three layer M. S. railing should be on stairs, filter all as required. The work also include inter connecting RCC inspection path way with hand railing to all unit as per site requirement, testing of all supplied materials. Including supply of all material, labour, T&P etc. required for proper completion and functioning of WTP. The rates shall be including of running and maintenance for Six month including training of Peyjal Nigam staff during running and maintenance period of treatment works including all performance test of clarifier, settler, filters and quality of filtered water as per water supply manual.

Earth work in excavation by mechanical means (Hydraulic Excavator) / manual means in hill side cutting or in foundation, 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. (For all building works works including Site Development, except pipe line trenches)

Confirmatory survey , design, Supply, Carting laying and jointing with welding process with proper grade of electrodes suitable for jointing of water supply pipe line (ador, L&T for equivalent quality of electrodes) by cutting of pipes and making required bends by welding, making necssary conection for pumps and sump cum CWR at MPS, fixing of air valve, sluice valve, reflux valve at suitable points including making scouring arrangement by fixing tee and gate valve etc with all appurtenat works with testing of supplied maiterials and completion of work with testing of pipe line etc completed following sizes ERW pipe at site of work. (The contractor have to survey the site, take levels with total station, measure the length of pipe with metallic tape on prescribed alignment and submit the design of rising main/supply main & distribution main for checking of thickness of pipe before ordering for supply of pipe). On completion of work the laid length of pipe will be deemed eligible for supply. The respective amount for quantity of surplus supply of pipes (which remained unlaid or unutilized) will be deducted from final bill and surplus quantity of pipes will be the property of contractor.)

From Intake well to MPS M.S ERW pipe 65mm dia 4.00mm thickness

From MPS to CWR M.S ERW pipe 65mm dia 4.00mm thickness

Supply and fixing of the following fitting including cartage of materials labour T&P etc. complete.

65 mm dia CS Sluice Valve (P.N. 1.6).

CI air valve Double acting. 20mm dia

Constructing masonry Chamber 120x120x120 cm, for Reflux/sluice/air valve, with C.I. surface box 100 mm. as per standard design. with locking arrangement.

Supply of all materials, labours, T&P etc complete & construction of 0.6x0.6x0.6m size gate valve chamber

Painting of following sizes API Pipes with 2 coats of approved quality. (Anti-Corrosive paint over one coat of Primer)supply and cartage of all material, Labour and T&P etc, complete

65 mm dia

Supply of all materials, labours, T&P etc and construct of 2.0 M wide briddle path along the alignment of rising main for cartage of rising main and later on for effective maintenance including R. R. Dry masonry in Retaining or brest wall (as and where required, as per site requirement) .

Construction of Anchor Block as per requirement of site) in R.C.C. with necessary reinforcement along the alignment of Raw water and Clear Water Rising Main including supply of all materials, labour, T&P etc. complete including cartage of materials

Subsoil Investigation, drawing, design and construction of following capacity RCC semi sunk reservoir, including testing and commissioning for water tightness, cost of all pipes/fittings etc. required for inlet/outlet/washout/byepass, excavation for foundation, 0.60 M wide appron with 15 cm PC drain, required sluice valve chamber, fixing water level indicator, lighening arrester, fixing 03 rowse railing at top dome (20 Kl & above), MS ladder (inside and outside of CWR), MS manhole with locking arrangement, ventilator with mosquito net, two coat snowcem/distemper/painting. carting & supply of scafolding & shuttering, making supply and cartage of all material, Labour and T&P etc, complete. (Cap. in KL)

ACTARIS Bulk Water Meters model Woltex Class B magnetically coupled pre equipped for remote reading

65mm dia

Constructing masonry Chamber 120x120x100 cm, inside with 75 class designation brick work in cement mortar 1:4 (1 cement :4 coarse) for Bulk water meter with C.I. surface box 100 mm. as per standard design. with locking arrangement.

Supply & fixing of MS Bucket type chlorinator of 25 liter Capacity including cartage of material, labour T & P etc complete

Supply carting , laying true to aligment and gradient, jointing and fixing of following pipe lines including all specials fittings and other appurtenant works including connecting existing house hold Connections with control plate devices etc complete and proper functioning ,confirming to IS:1239 at site of works G I PIPE (Medium):-

20mm dia

25mm dia

32mm dia

50mm dia

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. For pipe line in following strata including supply of labour, T&P. etc complete. Assuming that 90% pipe line is laid in trenches, it is estimated that 75% excavation will be in soil mixed with shingle, bajri & boulders and rest 25% will be in medium rock.

Soil mixed with boulder and bajri

Medium rock

Supply and fixing of the following fittings including cartage of materials, labours, T&P etc complete gate/Wheel valves (Class-I) as per I S 788/1997

20mm dia

25mm dia

50mm dia

Supply of all materials, labour, T&P etc and construct earthquake/vibration resistant, Pump house at having size 7.00 x 5.00 x 4.50 M. Including drawing, design, testing of soil bearing capacity, pump foundation et complete. Also including excavation for foundation, supply & fixing 01 rolling shutters, glazed windows, ventilator, 0.60 M wide sunshades, arrangement to support girders,girders, CC flooring, cable trench, electrification works, 0.60 M wide appron with drain, 0.60 M wide slab projection and two coat .snowcem/distemper/painting and proper drainage system.or as directed by Engineer in Charge. At MPS.

Design, testing bearing capacity of soil for construction of Staff Quarter of type Ist made up of Brick masonry with R.C.C. flat roof at pumping station i.e. MPS, IPS and other appurtenant works as per approved design & drawing including proper arrangements of electrification work at inner and outer side, complete sanitory works as per requirements & supply of all materials, labour, T&P etc. complete.

R.R. Stone masonary with 1:6 cement and sand mortar including cartage and supply of all materials,labours,T&P etc. complete for proper completion of work.

R.R.Stone masonry laid in dry including cartage and supply of all materials,labours,T&P etc. required for proper completion of work.

Concrete with 2 Cm gauge stone ballast, local sand and cement in proportion of 1:2:4 in foundation and floors including supply of all materials, labour and T&P etc.required for proper completion of work.

E& M WORKS FOR BHALSON PUMPING WATER SUPPLY SCHEME

RAW WATER

Raw water-Centrifugal pump (200 lpm discharge of raw water against a total head of 30 metres, speed 1450 RPM

Electric motor suitable for above pump

base plate

fully automatic auto transformer starter

Control Panel as per site requirement

35 mm² 3½ core Al Conductor Armoured XLPE, PVC Sheathed cable of 1.1 KV grade.

10 mm² 3 core Submersible cable 1.1 KV grade.

Jointing materials

Double loop earthing of all electrical equipments as per site req

Main piping and valves as per site requirement

Gauges as per site requirement

Tools as per site requirment

Lifting tackle as per site req

Rubber resistance sheet of size 1m x 2m x 0.025m

Spare Pump

Spare Motor

Installation,Testing and Commissioning of Pumping Plants

Testing of Pumping Plants against guaranteed figures of Schedule 'E' at Manufacturer works

Painting of entire installation

MPS- Centrifugal pump (200 lpm , 230 metres)Seeed 2900 RPM

Electric motor suitable for above pump

base plate

fully automatic auto transformer starter

Control Panel as per site requirement

50 mm² 3½ core Al Conductor Armoured XLPE, PVC Sheathed cable of 1.1 KV grade. (Double run)

16 mm² 3 core Submersible cable 1.1 KV grade. (Multi run)

Jointing materials

Double loop earthing of all electrical equipments as per site req

Main piping and valves as per site requirement

Gauges as per site requirement

Tools as per site requirment

Lifting tackle 1 Tonne chain pully block, 3 mt lift complete

Supply of rubber resistance sheet of size 1m x 2m x 0.025m

Spare Pump

Spare Motor

Installation,Testing and Commissioning of Pumping Plants with acessories

Testing of Pumping Plants against guaranteed figures of Schedule 'E' at Manufacturer works

Painting of entire installation

ELECTRIFICATION- For Intake well, M.P.S as per site requirement

AUTOMATION- GSM based remote terminal units with Analog and Digital Parameter as per site req

GSM based wireless communication hardware for RTU’s.

Intelligent Energy meters suitable for automation.

Valve Actuator for 80 mm dia valve.

Actuator Panel

Hard wired timer circuit for actuator

Pressure Transmitter

Level transmitter of 10 mt range

Isolation Transformer (440 V step down 220 V for protection of site automation)

Electromagnetic Flow meter for line sizes of 80 mm NB size

Single cabling between RTU and field instruments, 2 Core x 1.5 sqmm PVC coated flexible screened cable.

4 C x 1.5 sq mm PVC coated flexible unscreened Cu cable.

10C x 1.5 sq mm PVC coated flexible unsreened Cu cable.

Conduit pipe 1” PVC

Conduit pipe 1.5” PVC

Accessories like conduit pipe flexible pipes, PVC bend, AC & DC relays with base, lugs etc.

Erection commissioning of all instruments and customization of software.

O&M- After testing & commissioning of scheme running & maintenance of scheme by running pumping plant for 8 hrs per day (for a period of 6 months or complete Distribution line testing of civil works which over later ) including supply of skilled O&M staff, account maintenance including supply of all materials, labour, T&P etc. complete but excluding electricity charges for pumping of water.