EE(O and M-IIA)/T-53 of 2025-26

Site Preparation, Temporary Latrine, Placement & levelling of Rig Machine, Mast hoisting and Casing drilling (Upto 6 mtr.) Placement of Casing with all allied works necessary to commence drilling woks and wind up of all machineries after completion of Drilling.

Drilling by Reverse Rotary method of drilling using 9 7/8” dia. bit for pilot bore follwed by subsequently reaming using 12 1/4” dia. , 15 " dia. and 17.5" dia. Rock Roller Bits/ Drag Bits in consolidated, semi consolidated and soft formation up to required depth including casing boring and casing lowering as required including cost of fuels and lubricants etc. as required for drilling. Note: 1)Rate only for pilot drilling will be @ 50%. of item rate. 2)Rate for reaming by 12 1/4 " dia. bit will be @ 14% of item rate. 3)Rate for reaming by 15 " dia. bit will be @ 16% of item rate. 4)Rate for reaming by 17.5 " dia. bit will be @ 20% of item rate.

Note:1)Rate only for pilot drilling will be @ 50%. of item rate.

i) From 6 Mtr. to 60 Mtr.

ii) From 60 Mtr. to 90 Mtr.

iii) From 90 Mtr. to 120 Mtr.

iv) From 120 Mtr. to 150 Mtr.

v) From 150 Mtr. to 180 Mtr.

Note: 2) Rate for reaming by 12 1/4 " dia. bit will be @ 14% of item rate.

i) From 6 Mtr. to 60 Mtr.

ii) From 60 Mtr. to 90 Mtr.

iii) From 90 Mtr. to 120 Mtr.

iv) From 120 Mtr. to 150 Mtr.

v) From 150 Mtr. to 180 Mtr.

Note: 3) Rate for reaming by 15 " dia. bit will be @ 16% of item rate.

i) From 6 Mtr. to 60 Mtr.

ii) From 60 Mtr. to 90 Mtr.

iii) From 90 Mtr. to 120 Mtr.

iv) From 120 Mtr. to 150 Mtr.

v) From 150 Mtr. to 180 Mtr.

Note: 4) Rate for reaming by 17.5 " dia. bit will be @ 20% of item rate.

i) From 6 Mtr. to 60 Mtr.

Lowering the tube well assembly (UPVC Casing pipe, well pipe, strainer along with UPVC accessories) vertically in a position with proper lowering arrangement by applying necessary jointing compound including labour cost for subsequent gravel packing and machine operation cost etc.

Electro-logging charge.

Supply and delivery of UPVC pipe (CD) conforming to IS 12818:2010. (CIPET Certified)

300 mm dia UPVC Pipe

200 mm dia UPVC Pipe

Supply and delivery at site of UPVC Deep Well Screen (RDS) Pipes with Ribs at site conforming to IS 12818:2010. (CIPET Certified) a) 200 mm dia.

Supply and delivery of UPVC End Cap 200 mm dia

Supply and delivery of UPVC Reducer a) 300mmx 250 mm dia.

b) 250mmx 200 mm dia.

Supplying, Fitting, Fixing 300 mm dia. M.S. housing clamps of approved quality.

Supply and delivery of M.S .Centre guide (Special Type).

Supply and delivery of Washed gravels size ranging from 1.80 mm to 4.74 mm.conforming to IS 4097 : 1967. 0.785x(0.550^2-0.310^2)x44.00=7.13 m3 0.785x(0.550^2-0.210^2)x10.00=2.37 m3 0.785x(0.500^2-0.210^2)x100=16.16 m3 Total = 25.66 m3

Packing the annular space between the outside of the housing pipe & the bore with puddle clay balls of approval size as per direction of the EIC with cost of all materials & labour complete. 0.785x(0.550^2-0.310^2)x6.00=0.97 m3

Development (Min. 8 Hr. continuous) of tube well by using suitable air compressor (Min. Capacity: 600CFM & operating Pressure 14 Bar) followed by yield testing with BHT pump (Head :45 to 50mtr.,Discharge :1100 to 1000 LPM and 25 BHP engine) all complete including To & Fro Transportation cost and Cost of fuels, lubricants & Labour etc..

Water sample collection and chemical test including Arsenic Test.

Supplying, fitting & fixing G.I. cap at top. i) 300 mm dia.

Supply and delivery of Bentonite Powder conforming to IS 6186 :1986.

Cost of Consumables for drilling rigs and machineries.

Transportation cost of drilling equipment and accessories rig machine etc. including cost of fuel,Lubricant & loading unloading the materials from store/stack yard /suppliers godown and unloading /stacking the same at site. (Upto 60.0 km distance)

Socket & Spigot Ends D.I.Pipes (Class K-7) conforming to I.S.8329/2000 with inside cement mortar lining & outside zinc & bitumen coating. (a) 150 mm dia

Excavation of trial pit (3 M x 1 M, Depth upto 3M) for fixing of pumping main, washout lines etc., taking every precaution against damage of SW pipe line, electrical cables, gas main, sewer line, telephone cables etc. as under ground obstruction including 3.75 mm thick timber shoring, earth cutting, dewatering, barricading and again back filling etc. as per direction of the Engineer-in-charge.

Dismantling of cement concrete pavements by mechanical means using pneumatic tools breaking to pieces not exceeding 0.02 cum in volume and stock piling at designated locations and disposal of dismantled materials upto a lead of 1000 m, stacking serviceable and unserviceable materials separately as per Technical pecification Clause 202 for Rural Roads of MORD.

Earth work in excavation in trenches & pits for water supply line and appurtenant structures in all sorts of soils or loose materials (excluding laterite or sand stone) including removing spreading or stracking the spoils within a lead of 75m including bailing out water due to seepage complete as per instruction of the Engineer - in - Charge. (Use of buckets for removal if necessary shall be within the rates). as directed. The item includes necessary trimming the sides of trenches, levelling, dressing and ramming the bottom, bailling out water as required.

(a) Depth of excavation not exceeding 1,500 mm.

All types of Ductile Iron (D.I.) Specials (viz. Bend, Tee, Taper, Tail piece etc), size conforming to I.S. Specification No. 9523/2000 with cement mortar lining (inside) and bituminous coating (outside).

(a) Double socket bend

(i) 100 to 300 mm dia.

(b) Flange Tee

(i) 100 to 300 mm dia.

Supply of Single/Double bit SBR gasket suitable for jointing C.I./D.I. pressure pipes, conforming to I.S. 5382 : 1985.[popularly known as ''Tyton Gasket"]

(a) 150 mm dia.

Cutting of C.I/D.I pipes for fitting with pipes and/or specials of similar or dissimilar materials at the time of laying without damaging any part of the required length including taking out of the broken pieces from the trench and restacking the same at the specified location as per direction of the Engineer-in-Charge.

(a) 150 mm dia.

Chamfering the spigot end of C.I./D.I. pipes for fitting with the socket of C.I./D.I. pipes and/or specials in tyton jointed water mains or other wise using electric grinder as per specification and direction of the Engineer-in-Charge.

(a) 150 mm dia.

Lowering any type of D.I. pipes & specials and laying along trench at any depth as per specification and direction of the Engineer-in-charge. [For laying over ground, the rates shall be reduced by 10% and the rates so reduced shall be inclusive of cost of all sorts of holding arrangements]

(a) 150 mm dia.

Labour for Rubber gasket joints to C.I./D.I. pipes and specials all complete to makes the joint water tight at required hydraulic pressure as per specification and direction of the Engineer-in-Charge. [Cost of Rubber gasket of approved make including supply to any point within the Kolkata Metropolitan Area shall be paid separately.]

(a) 150 mm dia.

Dewatering by pupms including all leads, lifts and making all arrangements of disposal, where continuous flow of water from a source other than natural or ground water is encountered in case of emergency maintenance works related to leakage, breakage and making wet connections.

Supplying, fitting and fixing of C.I. Mechanical flexible Flange Socket Tailpiece suitable for making flanged connection with the plain barrel of C.I. Spun Pipes (as per IS : 1536) and D.I. Pipes (as per IS : 8329). The Tailpieces to be supplied complete with Sealing Rubber Gasket of EPDM quality (IS:5382/1985 Type-4), Cast Iron Follower Glands and Mild Steel Nut Bolts (Zinc Coated). The whole assembly should be mechanically and hydraulically tested to the provisions as laid down in IS: 1538. Fitting and fixing should be in proper position with proper care of main pipe line for leak proof condition.

(a) 150mm with length 100mm

Ductile iron double flanged manually operated sluice valve generally conforming to IS : 14846, having body, door, dome, gland in graded ductile iron to IS 1865, four faces and spindle nut of gun metal to IS : 318, inside screw non- rising stainless steel AISI-410 spindle valves suitable for maximum working pressure of 10/16 kg/cm² and body tested 15/24 kg/cm². Flanges drilled to IS: 1538 table 4 & 6. Valves tested by closed end method only. 350mm and above valves are complete with enclosed gear box with anti friction device.

(a) 150 mm dia.

Lowering, fitting and fixing of all types of valves in proper position and alignment using chain pully block or crane (for diameter above 250 mm) by providing temporary support, as required, gaskets, nuts & bolts etc. all cornplete as per specification and direction of the Engineer-in- Charge. [The rate Includes cost of flange joints]

(a) 150 mm dia.

Flange joint to C.l./D.l/MS. pipes and specials including supply of rubber gasket. nuts. bolts. washers etc. of best quality to make the joint watertight at required hydraulic pressure all complete as per specification & direction of the Engineer-in-Charge.Flange joint to C.l./D.l/MS. pipes and specials including supply of rubber gasket. nuts. bolts. washers etc. of best quality to make the joint watertight at required hydraulic pressure all complete as per specification & direction of the Engineer-in-Charge.

(a) 150 mm dia.

Construction of different dia Sluice valve /Air valve /Washout chamber in different sizes for village road where light traffic run and for main road where heavy traffic run as deptt.approved drawing with 25cm thick brick work (1:6) over cement concrete (4:2:1) over a single B/F soling over150mm.thick sand filling in foundation including earth work in excavation and disposal of excess earth from work site with RCC (1:1.5:3) cover slab 100mm / 150mm thick slab on top of chamber with 1% reinforcement in RCC cover slab with necessary opening for operation of valve all complete including cost of labour & materials as per Departmental

(a) 80 mm to 150 mm dia pipe

Earth work in filling in trenches and pits with good earth obtained from excavation of trenches and pits including consolidation by watering and ramming in layers not exceeding 150 mm etc. complete as per instruction (payment to be made on the basis of finished quantity)

Filling in foundation or plinth by silver sand in layers not exceeding 150 mm as directed and consolidating the same by thorough saturation with water, ramming complete including the cost of supply of sand. (Payment to be made on measurement of finished quantity)

a) With silver sand.

Single brick flat soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with powdered earth or local sand.

Ordinary Cement concrete (Mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement,if any, in ground floor as per relevant IS codes.

(a) Pakur variety

Removal of rubbish, earth etc. from the working site and disposal of the same, beyond the compound (working site) in conformity with the Municipal / Corporation Rules for such disposal, loading into truck and cleaning the site in all respect as per direction of the Engineer-in-charge.

Added:- @ 18% as GST

Added:- @ 1% as labour cess

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