Banali G.O.V. Pumping Water Supply Scheme of Block Chamba, District Tehri Garhwal Uttarakhand funded from STATE SECTOR NABARD

Amount

Raft top of the well shall be up to 4.5 m higher than HFL and bottom of well shall be 1.00 m from max. scour depth of the lowest water level of the Song river as per the decision of Engineer-in-Charge and designer’s suggestions.

A collecting chamber of appropriate size attached structurally with the main Intake Well and having the same depth with the feeding channel / pipe to carry the raw water from river to collecting chamber.

The Intake well shall have a 60 cm wide RCC or MS circular stair case with suitable landing and 1.00 m high GI pipe 20 mm railing in 3 rows supported on ISA 40x40x5 angle iron posts. The stair case should be started from deck slab to the lowest foundation beam of the Intake well.

Construction of various RCC foundations for installing pumping plants with motors, arrangement of fixing of various valves etc complete.

Intake well deck floor slab bottom shall be1.00 m above HFL and steinning wall height shall not be less than 9.5 m high above raft. The slab shall have suitable opening for the inside circular stair case and opening have suitable 1.00 meter high railing of GI pipe 20 mm Ø in 3 rows supported on MS angle iron posts of ISA 40x40x5 for prevention of falling of men and material in the well.

1.20 m wide RCC circular balcony around outside the well and 2.00 m wide RCC approach path not less than 1.00 m high on HFL and having GI pipe 20 mm railing 3 rows supported on MS angle iron post ISA 40x40x5 grouted in RCC deck slab.

The ceiling of roof slab of Intake well pump house shall not be less than 4.0 m above deck slab and projecting 1.00 Meter outside the pump house wall providing roof over the balcony. The roof slab shall be sloping and should have good architectural look as per satisfaction of engineer in charge. Pump house shall be provided with the following doors and windows:- (a) Entrance 1 No door of size 1.5 m x 2.1 m, (b) 3 Nos windows of size 0.9 m x 1.2 m. The door and windows shall be heavy size “Z” section and windows having outside MS grill of MS squre bar of 10 mm x 10 mm size and opening shall not be more than 10 cm x 10 cm and mosquito proof net and fitting welded on door and windows to the satisfaction of Engineer in charge of work.

The structural design of the Intake well shall have a suitable 2.00 m wide and 12 m long span RCC bridge with approach road. Span of the bridge and lenght of approach road may vary as per site requirements for making approach to the Intake well cum pump house including iron gate on entrance.

All the expose masonry works shall either be of well plastered or of raised pointing or of ornamental plastering as per direction of Engineer in charge of work.

Pump house and Intake well shall be painted with two coats of approved quality and shade of apex or equivalent quality exterior paint over one coat of suitable primer and railing/ MS posts shall also be painted with approved quality and shade of two coats of anti corrosive enamel paint over one coat of approved quality primer.

All necessary arrangements for dewatering during construction, diversion of river and necessary safe guards against flood shall be done by the contractor at his own cost and risk and no extra payment shall be made for these appurtenant works.

The detailed structural design of the Intake well cum pump house showing all the details shall be supplied in 3 copies by the contractor within 21 days of acceptance of tender. The contractor shall be bounded to supply any other information asked for in respect of the above, failing which his tender will be liable to be rejected and earnest security deposit shall be forfeited. The contractor shall also give reference of all the relevant IS/BS codes, which ever and where ever applicable in the design and also other clarifications as and when asked for.

Variation in rates of item no. 1 (1.01 to 1.13) above for variation in depth of RCC Intake well.

Increase in rates for each 0.50 m increase in depth (upto a total of 1.50 m)

Decrease in rates for each 0.50 m decrease in depth of well (upto 1.50 m).

Increase in rates for each 0.5 m increase in internal diameter intake well.

Decrease in rates for each 0.5 m decrease in internal diameter intake well.

Increase in rates for each 1.0 m increase of RCC approach bridge length.

Decrease in rates for each 1.0 m decrease of RCC approach bridge length.

Civil Works - Excavation of earth for pipeline trenches of Raw, Clear water rising main, Feeder Main and Distribution System in following strata requiring the use of specials, T&P such as pick axes, sabbals crow bars etc with a lift upto 1.5 m and lead upto 30 m. including refilling, watering, ramming of excavated earth into the trenches and removal & disposal of surplus earth upto a distance of 60 m. from the trenches including supply of all materials, labour, T & P etc. all complete.

Soil mixed with boulder and bajri

Medium rock

Design and Supply of all materials, labour T & P etc. and equipments to construct 0.75 MLD capacity (for 16 hours operation per day) Rapid Sand Gavity filteration plant consisting of all required arrangement viz inlet chamber, clarifloculator, settling tank, filteration unit of 0.75 MLD each of specified gravel bed media with wash water trough, wash water storage back wash arrangement and scour & under drainage system and chemical solution tank & appropriates valves etc all complete,all the units of WTP Shall be connected minimum 1.0 mt. wide R.C.C. approch path with railing on both sides considering local safety features including cartage of all materials, labour, T & p etc. as per CPHEEO guidelines required for proper completion of work.all

Confirmatory Survey and economic design of rising main including supplying, cartage, laying, jointing, fixing & welding of following API pipe (X-42 grade), duly painted out side with anticorrosive paint from factory and in case of damege of this painted layer it shall be done at site before laying without any extra cost and other appurtenent works such as fixing of wheel valve, sluice valve, reflux valve at suitable points including making scouring arrangment at suitable location by fixing tee and gate valve, making of by pass arrangments at sump cum CWR & TOP CWR etc. complete and also testing and commissioning of laid pipe line including supply of all materials, labour, T&P etc. complete.

From Intake Well to MPS 125 mm dia 4.80 mm thick

From MPS to I.P.S 125 mm dia 4.80 mm thick

From IPS to Top CWR 125 mm dia 4.80 mm thick

Supplying, Carting, fixing of following size of Cast Steel Sluice / Gate valve of rising main as per API-600 at suitable points including supply of all materials, labour and T&P etc. complete. Gate/Sluice Valve.

125 mm dia (Class -300)

Supplying, Carting, fixing of following size of Cast Steel scour valve of rising main as per API-600 at suitable points including supply of all materials, labour and T&P etc. complete.

125 mm dia (Class-300)

Supplying, Carting, fixing of following size of Cast Steel refelx valve of rising main as per API-600 at suitable points including supply of all materials, labour and T&P etc. complete.

125 mm dia (Class-300)

Supplying, Carting, fixing of following sizes of Cast Steel double orifice, double acting air valve with SS-302 steel ball and with isolated sluice valve at suitable points including supply of all materials, labour and T&P etc. complete.

CS air valve 32 mm (with suitable pressure)

Confirmatory survey and design of Supply / Feeder Main and Distribution System including Supply, Carting, Laying & Jointing GI Medium Pipe of following size and also provision of specials and other appurtenant works such as fixing of air valve, sluice valve etc. at suitable points including making scouring arrangment at suitable location by fixing tee & gate valve etc. complete and also testing and commissioning of laid pipe line including supply of all materials, labour, T&P etc. complete.

80 mm dia

65 mm dia

50 mm dia

40 mm dia

32 mm dia

25 mm dia

20 mm dia

Supply & Construction of Sluice / Gate Valve / Wheel Valve Chamber / Air Valve Chamber of ( 1.2 x 1.2 x 1.2 mtrs ) in brick masonnry with fixing of M.S. manhole cover on top including supply of all materials, labour, T&P etc. complete required for proper completion of work as per drawing & design.

Supply & Construction of Wheel Valve Chamber ( 60 x 60 x 75 cm) in brick masonnry with fixing of M.S. manhole cover on top including supply of all materials, labour, T&P etc. complete required for proper completion of work as per drawing & design.

Design & Supply of all materials, labour T&P etc construction of anchor/thrust block along the alignment of rising main with PCC 1:2:4 with nominal reinforcement on top as per design cement & sand mortor complete.

Design & Construction of following size of pump house considering all local safety features including supply of all materials, labour T&P, cable trenches, pannel & pump foundation etc complete as per type design.

At MPS / IPS (8 x 7.0 x 5.0) mtr.

Supplying, Carting, fixing of following sizes of gun metal wheel valve as per IS: 14846 with caps etc. flange drilled as per IS: 1538/70 ISI marked etc. at suitable points including supply of all materials, labour and T&P etc. complete.

80 mm dia

65 mm dia

50 mm dia

40 mm dia

32 mm dia

25 mm dia

20 mm dia

Supply and fixing of Automatic solution feeder Chlorinator etc. complete including supply of all materials, labour, T&P etc. complete.

Design and Construction of following R.C.C. M 25 grade semi sunk circular service water reservoirs as per latest IS codes of following capacity and other appurtenant works including supply of all materials, labour and T&P etc. with all necessary scaffolding, shuttering and other accessories alongwith construction of valve chambers, supply and fixing of inlet and outlet pipes, lightining conductor, water level indicator, bye pass connections with chambers & M.S. Manhole cover with locking arrengment including supply and fixing of M.S. Steel Ladder of 65 mm x 65 mm x 5 mm angle outside and inside the tank ( For tanks 20 KL capacity or more) and colour washing of approved apex or other exterior high class paint, on the tank, manhole SS mosquito wire mesh over expanded metal mesh including supply of all materials, labour, T&P etc. complete required for proper completion of work or as per direction of engineer incharge of work. The reservoirs shall be checked for water tightness i.e for leakage, seepage in the tank and before making the final payment to contractor.

60 K.L. at M.P.S.

45 K.L. at I.P.S.

130 K.L. at TOP CWR

Design and Construction of staff quarter of type - I plinth area (43 sqm) made up of brick masonry with R.C.C. flat roof at each pumping station and Top CWR's with other appurtenant works considering all local safety features including supply of all materials, labour, T&P, etc. complete for proper completion of work including cartage of material at various sites.

Design and Construction of boundary wall made up of half brick masonry and column of full brick masonry 1.5 m height with suitable foundation detail at each pumping station and CWR's including supply of all material, labour, T&P etc. complete for proper completion of work including cartage of material.

Construction of protection works for Site Development of Intake, WTP, Clear Water Reservoir, Pump House, Staff Quarter, Sump cum Reservoirs, Service Reservoirs, Rising Main, Feeder Main etc. as per site conditions wherever necessary as follows ( with the prior approval of Engineer incharge) :-

P.C.C. 1:4:8 with 40 mm gauge stone ballast including supply of all materials, labour, T&P etc. complete.

Random Rubble stone masonry in 1:6 with cement and sand mortar including supply of all materials, labour, T&P etc. complete.

Random Rubble stone masonry laid dry including supply of all materials, labour, T&P etc. complete.

PCC 1:2:4 including supply of all materials, labour, T&P etc. complete.

Design, Supply & Fabrication of Iron Gate 3mm thick M.S. sheet with frame of 50x50x6 mm angle iron and 3 mm M.S. gusset plates at the junctions and corners, all necessary fittings complete, including applying a priming coat of approved steel primer. 10.5.1 Using M.S. angles 40x40x6 mm for diagonal braces3 mtr wide.

Construction of Briddle Path 2.0 mtr wide On hill side excavation will be 1.00 m while on valley side no excavation will be made. Collie walls shall be laid no 50% of length to retain earth. Protection will be done in 50% of length to retain earth including supply of all materials, labour, T&P etc. complete.

Painting of API pipe with black anti-corrosive bitumastic paint of approved brand and manufacture to give an even shade, two or more coats on new work

Supply & Construction of Pillar type Stand Post of Distribution System (for GP's) including supply of all materials, labour, T&P etc. complete required for proper completion of work as per drawing & design.

Supply & Construction of break pressure tank of ( 1.2 x 1.2 x 1.2 mtrs ) in brick masonry with fixing of 4 mm thick M.S. sheet manhole cover on top including supply of all materials, labour, T&P etc. complete required for proper completion of work as per drawing & design.

E & M Works

Intake Well- Centrifugal pump set

Addition/Deduction of rate for per 10 mt change in pumping head (Intake Well)

Motor

Base Plate

Control Panel cum starter

25 mm² Al. conductor 3.5 core XLPE cable of 1.1 KV grade

6 mm² Cu conductor 3 core submersible cable of 1.1 KV grade

Jointing material such as lugs, tape etc.

Earthing

100 mm dia C.S D/F Sluice valve of Class 150 ASA- 2 nos 80 mm dia CS DF sluice valve Class 150 ASA- 4 nos 80 mm dia C.S D/F Reflex valve of Class 150 ASA- 3 nos PIPE & FITTING- 1 set

GAUGES

Rubber resistance sheet

Tools

1 ton lifting tackle

Testing at works

MPS- Centrifugal pump set

Addition/Deduction of rate for per 10 mt change in pumping head (MPS)

Motor

Base Plate

FULLY AUTOMATIC AUTO TRANSFORMER STARTER

Control Panel

95 mm² Al. conductor 3.5 core XLPE cable of 1.1 KV grade

35 mm² Cu conductor 3 core submersible cable of 1.1 KV grade

Jointing material such as lugs, tape etc.

Earthing

100 mm dia C.I D/F Sluice valve of Class PN 1.0- 2 nos 80 mm dia CS DF sluice valve Class 300 ASA- 4 nos 80 mm dia C.S D/F Reflex valve of Class 300 ASA- 3 nos PIPE & FITTING- 1 set

GAUGES

Rubber resistance sheet

Tools

H.O.T. Crane 2 Ton

Testing at works

IPS- Centrifugal pump set

Addition/Deduction of rate for per 10 mt change in pumping head (IPS)

Motor

Base Plate

FULLY AUTOMATIC AUTO TRANSFORMER STARTER

Control Panel

70 mm² Al. conductor 3.5 core XLPE cable of 1.1 KV grade

35 mm² Cu conductor 3 core submersible cable of 1.1 KV grade

Jointing material such as lugs, tape etc.

Earthing

100 mm dia C.I D/F Sluice valve of Class PN 1.0- 2 nos 80 mm dia CS DF sluice valve Class 300 ASA- 4 nos 80 mm dia C.S D/F Reflex valve of Class 300 ASA- 3 nos PIPE & FITTING- 1 set

GAUGES

Rubber resistance sheet

Tools

H.O.T. Crane 2 Ton

Testing at works

SITC of transformer 63 KVA

SITC of transformer 100 KVA

Fencing of transformers

Earthing of transformers

GSM based remote terminal unit

GSM based wireless communication hardware

Electromagnetic insertion type flow meter 80 mm

Level transmitter

Energy meter

Valve actuator 80 mm

Actuator panel

Hard wire timer circuit

Pressure transmitter

Auto phase reversal for Intake well

Auto phase reversal for MPS

Auto phase reversal for IPS

Isolation transformer

Over voltage & under voltage trip protection

2 Core X 1.5 PVC quoted flexible screen cable

4 Core X 2.5 sq.mm copper power cable

4 Core X 1.5 sq.mm unscreened copper power cable

10 Core X 1.5 sq.mm unscreened copper power cable

Accessories

Customization of software & Integration with SCADA station

Erection commissioning of IRTU/PLC

Erection commissioning of flow meter

Erection commissioning of actuator

Erection commissioning of pressure sensor

Customized develop version of SCADA software

Master control station hardware

Front end Processor

0.5 KVA UPS

600 DPI inject color printer

GSM based wireless communication hardware (MCS)

Opeeration & Maintenance