Drilling of Boreholes for Ground Water Sampling and Surveillance in Plant Site and Infra area of FRFCF at Kalpakkam

Amount

Drilling 200mm dia bore hole to inserting 110 mm dia pipe through over burden with staright rotary drill such as sand clay gravel or any other hard soil, alluvial soil, sedimentary strata of clay and sand stone shale pebbles boulders etc, upto the depth of 20m all as per specification and as directed by the Engineer-in -charge. Note :- supply and errection of 110 mm dia HDPE pipe will measured in seperate item.

All kinds of soil with depth upto 1.5m below average Ground level and disposing surplus excavated earth upto a lead of 1Km.

Supplying & placing Filcrete using cement crushed stone sand in proportion of 1:15 at temperature not exceeding 38 deg C for filling at all elevation inclusive of all labour, batching, mixing, transportation, material, compaction, pumping, curing etc all complete as per specification, drawing and as directed by the Engineer In-charge.

Providing and laying plain cement concrete M20 grade using 300 kg/cum of PPC, 20mm maximum size graded aggregates and washed crushed stone sand including mechanical mixing, transporting and placing in required position, ramming, compaction, levelling, curing, shuttering, dewatering if any, complete all as per specification for levelling courses in foundation for walls, footings, floor drains etc., encasing pipes, screed concrete at terrace and other required works directed by Engineer-in-Charge complete all as per specifications. Dosage of PCE based admixture as per workability requirment at site conditions. Note: 1. The rate of concrete shall include all labour, equipment, charges for mixing & cost of admixture. Polycarboxylate ether (PCE) based chemical admixture confirming to IS 9103 shall be mixed in fresh concrete and prior permission from engineer-in-charge shall be obtained for dosage and compatibility. 2. Test certificate of cement, procured from dealer/company to be submitted for all cement related works by the Contractor. 3. The rate shall be quoted on the basis of using minimum cement per cu.m. of concrete mentioned below for relevant grade of concrete. Any upward/ downward variation required to obtain the specified strength will be paid for or deducted at the rate of cement specified in Schedule F.

Providing and laying cast insitu controlled reinforced cement concrete of specified grade at all levels and lifts mentioned below using 20mm maximum size hard granite machine washed crushed graded stone aggregates and washed crushed stone sand including testings as per QAP, weigh batching, charges for mixing & cost of admixture, mechanical mixing, transporting and placing at all lifts, vibrating, consolidating, 14 days curing and finishing smooth of all exposed faces complete for column footing, columns, lintels, sunshades, gutter slabs, beams, slabs, water tank, machine foundation and all other structural elements including dewatering wherever necessary (Formwork and reinforcement will be paid for separately) all as per specification and all as shown in drawings and as directed by the Engineer-in-charge for all insitu item. Note: 1. The rate of concrete shall include all labour, equipment, charges for mixing & cost of admixture. Polycarboxylate ether (PCE) based chemical admixture confirming to IS 9103 shall be mixed in fresh concrete and prior permission from engineer-in-charge shall be obtained for dosage and compatibility. 2. Test certificate of cement, procured from dealer/company to be submitted for all cement related works by the Contractor. 3. The rate shall be quoted on the basis of using minimum cement per cu.m. of concrete mentioned below for relevant grade of concrete. Any upward/ downward variation required to obtain the specified strength will be paid for or deducted at the rate of cement specified in Schedule F.

M30 grade with 380 kg of PPC per cu.m. of concrete upto plinth level

Supplying, fabricating, erecting and fixing in position at all levels, centering and shuttering to correct line and levels including strutting, propping, etc., with necessary bracings in all axes to give a stable assembly with provision for making the joints in the shuttering fully leak proof and with provision for fixing coil nuts with tie rods along with suitable channel for lateral supports and for inserts, projecting dowels, anchor bolts or any other fixture, including staging, access and working platforms etc., all complete as specified and directed including dismantling and removing the aforesaid assembly after the concrete attains the sufficient strength to self-support itself without cracking and distortion all as per specification, including all materials and labour complete in all respects at all lifts. The measurement for the formwork will be the actual area of forms in contact with concrete surfaces. Shuttering with plywood panels alone will be permitted.

Providing straightening, decoiling wherever necessary bending, cutting, binding and fixing in position steel reinforcement TMT bars of Fe500D grade steel conforming to IS:1786 and tying with approved annealed binding wire of 1.6mm dia in all reinforced cement concrete work at all lifts, including cost of supplying and fixing the spacer/cover blocks and binding wire complete all as per specification and as directed by Engineer-in-Charge at all lifts. Note: The rate shall be including the cost and testing of reinforcement steel at thrid party NABL lab. The reinforcement steel will be procured from dealers with a test certificate as approved by the department. For further details please see Clause 12 of Section VIII, General Information for Guidance of Tenderers.

Providing, supplying, cutting, bending to shape, welding, fabricating, hoisting, placing and fixing in position structural steel members like MS structural embedment's/pipe and sleeves/penetration etc. Using MS angles, channels, I-sections, plates, tees, flats, rounds, MS/CS pipes,square sections etc. including chamfering and rounding off the edges, applying a coat of Red lead paint primer / Zinc chromate primer of approved make and 2 coats of flat oil paint / sythetic enamel paint of approved colour and make, scaffolding and staging required for fabrication as well as erection complete all as per specifications, drawings and as directed by the Engineer-in-charge. Note: Lifting device arrangements if any required also arranged by the contractor at his own cost.

Supplying, transporting, and filling 20mm blue metal aggregate as a filter media around perforated pipes in boreholes. The material should be of high-grade crushed stone, clean, uniformly graded, and free from dust, clay, and organic impurities. It must ensure proper drainage, sediment filtration, and water permeability as per specifications. The filling should be carried out in layers with adequate compaction to maintain stability and effectiveness. as per specification, drawing and as directed by the Engineer In-charge.

Providing and laying in to vertical bore hole of 110mm dia Perforated HDPE pipe of PN 6, PE 63DN 110 meeting IS 4894 at below Ground level including Butt fushion welding and joining of pipes, wrapping and tying the pipe with one layer of approved non woven geo textiles with elongation less than 50% meeting IS 16393 requirements over the HDPE Pipe.

110mm HDPE pipes and specials.

THIRU ENTERPRISES (BID ID -3228726)

V MURUGESAN (BID ID -3228334)

R CHANDRASHEKARAN (BID ID -3228604)